Cartex® mechanical seals are fully preasembled. They are balanced, can be used in either direction of rotation and come with all the connections you need for the most common modes of operation.

The CARTEX-GSD was developed in order to be able to exploit the advantages of a gas-lubricated seal in very small seal chambers, e.g. stuffing boxes originally intended for packings. It fulfils extreme demands to environmental protection and operating safety. Due to the contact free running it guarantees a high economic efficiency.

The CGS works contact-free.The U- or V-grooves are located in the stationary seat. The CGS is adequate for sealing gases and liquids e.g. in ventilators, small steam turbines, blowers, roots compressors and pumps at low and medium sliding velocities, pressures and temperatures. Adequate for pressure reversal.

With the GSO-D a compact gas lubricated dual seal was designed which is suitable for high speed applications. The particularly short design is owing to one common rotating seat used for both the product and the atmosphere side. This face to face arrangement is designed as a double pressure balanced cartridge unit and possesses all the advantages associated with the stationary version.

The GSO-D is mainly used to seal fans, ventilators and blowers.

Mechanical seals of the H10 range have a short installation length (axial). The H10 is a compact ready-to-fit seal which can be installed in the same axial length as a "lip-seal" and can be used to seal differential pressures of up to 25 bar.

Mechanical seals of the H12N series are a cost effective version of a balanced seal. They feature the same rugged and reliable construction as the unbalanced spring seals in the Burgmann range. These seals are primarily used in the chemical sector and in water pumps.

Double seals of the H74-D series have the same design-features as the "H7" family of single seals (easy-to-replace seal faces, etc.). Apart from the installation length of the drive collar, all fitting dimensions (d1<100 mm) conform with EN 12756 (DIN 24960).

The H7N mechanical seal range is designed for universal application and the interchangeable parts concept is ideal for stock rationalisation. The seal faces are loosely inserted and can be easily exchanged, the trust ring is retained by the drive lugs preventing the springs from falling out.

New: H7N with ´Super-Sinus´ spring

Semi-split mechanical seals are used if there is a sufficient axial clearance to pull off the seal housing and seat housings until the sliding parts are accessible. I. e. only the wearing parts proper, such as the seal face and stationary seat as well as O-rings are split. The seal face and stationary seat, springs and O-rings can thus be replaced without requiring complete disassembly. Springs are arranged to be protected from the medium. The split stationary seat can be used in either side.

Mechanical seals of the HJ series are designed for media containing solids or with high viscosity e.g. sugar, paper, sewage and waste water industry. The springs are product protected. There is no sticking or clogging making the design rugged and reliable.

Mechanical seals of the HR series are special-purpose seals for use in media containing solids without external flushing or product circulation. HR mechanical seals find application mainly in the scrubbing sections of power station flue gas desulphurization systems, and they are also used successfully in the paper industry.

Mechanical seals of the HRC series were developed specially for use in standard chemical pumps. The radial and axial space has been optimized to provide ideal conditions for maximum operational reliability.

The new gas-lubricated HRGS-D was developed from the proven HRC-GSD and RGS-D range. Due to its robust design this seal is well suited for liquid and gaseous media containing solids. The entering of solid particles into the seal chamber is prevented by a gas ring building up during rotation and the resulting centrifugal forces.

The new stationary mechanical seal for DIN installation spaces is ideal for use in dirty, abrasive media containing solids, e.g. in waste water systems and the chemicals industry. The stationary part has multiple springs and faces away from the product. It is thus protected from possible effects of the medium such as sticking and clogging. The seal is suitable for pressure reversals and can be operated in tandem as well as back-to-back arrangements.

The M2 mechanical seal range features a spring loaded solid carbon graphite seal face. They are cost effective for basic applications such as circulating pumps for water and heating systems.

The M3 mechanical seals are immensly popular. Extremely rugged and reliable, they cover a wide spectrum of applications - in water pumps, sewage pumps, submerged pumps, chemical pumps, etc.

Double seals in the M74-D series have the same design-features as the "M7" family of single seals (easy-to-replace seal faces, etc.). Apart from the installation length of the drive collar, all fitting dimensions (d1<100 mm) conform with EN 12756 (DIN 24960).

The M7 mechanical seal range is designed for universal application and ideal suited for standardisation. The loosely inserted seal faces are easily exchanged, permitting all combinations of materials and stock rationalisation.

New : with Super-Sinus spring.

MBS100 mechanical seal is designed for use on pumps which operate in the middle pressure and temperature range.

Roller bellows seals in the MF95N series have a very wide field of application and are particularly ideal for pumps in the waste water sector, the chemical industry, refineries and any areas needing to meet sterile requirements such as in the pharmaceutical and food industries.

The MFL65 mechanical seal was specially developed for high temperature ranges and sliding velocities. Its torque transmission exerts no strain whatsoever on the bellows and requires no elastomer secondary seals.

The MFL85GS series offers a wide range of applications for gas-lubricated mechanical seals in high and low temperature environment. It is suitable for liquid gas pumps, in the refinery and petrochemical industry, in tandem arrangement or as safety seal on the atmosphere side.

Mechanical seals in the MFL series have a universal field of application. They are designed for extreme ranges of temperature and for high-viscosity media. There is no dynamic O-ring and therefore a bellows seal will never hang-up. (See for details of the MFL65 stationary bellows seal.) With vibration damper for optimum running characteristics (important when there is a risk of dry running).

Mechanical seals of the MG series are amongst the most commonly used. The bellows is not subjected to any torsional stress and its ingenious design incorporates several functions, as seal face carrier, secondary sealing element and drive collar. The seal face is driven through the spring and "L"-rings. There are not bonded joints and all the face materials are interchangeable without having to modify any dimensions. Highly recommended for duties with media containing solids e.g. in waste water and sewage applications.

The MG9 is designed for application in the medium pressure and stress range and, within its operating limits, can be universally used in pumps. Just one bellows unit per diameter can be used for all installation lengths. Bellows and spring are free of torsional strain.

Metal bellows cartridge seal Large temperature operating range (-40 ... +280°C). Simple and rugged design, extremely easy to install. Equally ideal for retrofits and original equipment.

The Mtex-GSD resembles the systematic combination of the proven Mtex concept with the
state-of-the-art gas sealing technology.

Mechanical seals of the SH-range were developed for use in thermal power stations and for pumps in oil production, transport processes and water injection. The deformation behaviour of this latest generation of mechanical seals was optimized by large scale FE-analyses. For an optimum circulation they can be fitted with a pumping device. Pressures up to 150 barg dynamic and 500 barg static can be sealed. The more or less standardized inside components are adapted to the respective pumps by means of special adapters.

Unitex mechanical seals are completely pre-assembled units for use in the medium pressure and load range in conventional stuffing boxes of circulating pumps.
High-quality face and construction materials enable a wide variety of applications to be covered. They are ideal substitutes for packings without the need for complicated adaptations or preparations.

QDP:24 - the Quick Delivery Program from Burgmann

The Unitex/dN-G60 is available according to QDP:24 in material combination BQ1V(E)GG and Q1Q1V(E)GG for all diameters.

Seal for agitators with top entry drive

Vessels seals of the HS-D range are designed for medium-to-high pressure applications. HS(L)-D, unbalanced, for up to PN 25. Operation only with pressurized buffer fluid.

Vessel seals of the HSH-D range are designed and built specially for high-pressure applications. They are operated solely with pressurized buffer fluid.

Vessel seals of the M461 range are factory assembled and tested cartridge units ready for fitting in special applications on glass-lined vessels to DIN 28136. The fitting dimensions of the mounting flange are in accordance with DIN 28137 T2. The sleeve dimensions comply with shaft details given in DIN 28159. All parts exposed to the product are of non-metallic construction.

Agitator seals of the M481 range are factory assembled and tested units. For use on carbon steel and stainless steel vessels in conformance with DIN 28136. The fitting dimensions of the mounting flanges are in accordance with DIN 28141. The seeve dimensions comply with shaft details given in DIN 28154.

Agitator seals of the MR-D range are ideal for applications involving sticky, viscous or dry media. They have been used successfully for many years to seal all kinds of mixers, driers, mills and reactors in the plastic, paint, food and pharmaceutical industries. The inboard seal features a rotating seat with a smooth profile without crevices where product can lodge and cause contamination.

Developed to seal the gas blanket in mixers and agitators with top drive, e.g. in the chemical and pharmaceutical industry. The SeccoMix® is designed for applications where simple sealing systems are adequate but the benefits of a mechanical seal are desirable or demanded.

With the BURGMANN DRU system it is possible to supply buffer fluid to double and tandem seals over a broad range of applications. These pressure booster are equipped as standard with all the necessary connections and brackets. System components can be installed to suit new requirements or seal retrofit at a later date. Design and production conform with the German Pressure Vessel Regulations and the AD Code. Quality assured pressure booster for storing and cooling buffer fluid. Pressurization by means of a piston acting from the process / medium pressure. Pressure increase in accordance with the transmission ratio. The maximum operating pressure of 63 bar applies to the booster housing, i.e. the process / medium pressure at the connection must be lower and is conditional on the transmission ratio.

Screw pumps of the HPS range are canned pumps. They are hermetically tight and require by and large no maintenance. Their ideal area of application is closed high-pressure circuits for low viscosity fluids. Here the HPS represents a genuine, low-price alternative to the centrifugal pump without stuffing box.

Magnetic rod in a pressure casing for inline installation. The magnetic rod can be removed for cleaning by opening the cover.
Calculation and design in accordance with the AD Code.

Magnetic filters of the MAF type are inline filters for installation inside pipelines. The combination of magnetics and filter element guarantees a high level of efficiency. Magnetic filters are used in seal supply systems and any other such systems in which a liquid has to be cleaned of magnetic and non-magnetic impurities up to a certain size.

Measuring instruments for visual monitoring of the operating pressure, the operating temperature or for checking the amount of fluid used to refill the buffer fluid circuit in closed systems.

For visual monitoring of the operating temperature and the operating pressure. The measuring unit consists of a pressure gauge (NG100) with a gauge shut-off valve in accordance with DIN 16270, a bimetallic thermometer gauge with protective sleeve and a connector.

For buffer fluid level monitoring with magnetic or proximity contact. The contact unit consists of one or several magnetic elements which transmit the position of the fluid level or of the pressure booster piston rod to the switches without touching. The switches are reed contacts or inductive contacts in accordance with NAMUR.

For visual monitoring under difficult service conditions. It functions by means of a floating ball and a magnetic system. The indicator strip can be positioned through 360°. It consists of movable two-colour plates that are turned by the magnet system.

For manual refilling of buffer fluid during operation. The refill unit consists of a storage vessel with level indicator, filler neck and a hand pump. It is mounted directly on the thermosiphon vessel or pressure booster.

Automatic refill units

For buffer fluid level monitoring with alarm and/or control of automatic refill units.

For circulating the buffer fluid (to increase the cooling capacity). Suitable for water and other liquids of similarly low viscosity.

Cyclone separators of the ZY type are used to clean mainly aqueous liquids containing dirt and solids (e.g. in circulations of sewage, sludge, crude etc.).

Heat exchanger with double coil around a guide tube. Buffer medium in the tubes. Design, material selection and testing in accordance with the German Pressure Vessel Regulations and the AD Code.

Heat exchangers of the WED type are used to cool buffer fluids in seal supply circuits. Designed as a tubular heat exchanger, the WED is outstanding for ist high cooling capacity yet compact dimensions. Design, production and material selection conform with the German Pressure Vessel Regulatios and with the AD Code. Quality assured.

These heat exchangers are made of finned tubes for cooling buffer fluids in seal circuits. The cooling medium is ambient air. Design, material selection and testing in accordance with the German Pressure Vessel Regulations and the AD Code.

Quenching fluid systems are used to supply single or tandem mechanical seals. They act as a convenient fluid reservoir. The exchange of fluid takes place by thermosiphon principle or by forced circulation, e.g. with a pumping screw.

With the Burgmann TS system it is possible to supply buffer fluid to double and tandem seal arrangements for a broad range of applications.The vessel is used for the storage, pressure maintenance and cooling of buffer fluid in a sealing circuit. Design and production conform with the German Pressure Vessel Regulations and the AD Code. Quality assured.

Thermosiphon systems of the TS 3000 type are designed specially for the operation and supply of mechanical seals in sterile processes. In addition to performing the four basic functions of a buffer system, the TS 3000 can also be used to make condensate, provided it is connected up to a steam line.

The Burgmann TS 3016/A001 thermosiphon system presents a simple and quick way to clean the inside of the vessel. For this purpose it is designed for easy dismantling. A quick coupling should be used to connect the pressure gas to the vessel. Two sight-glasses fitted on opposite sides enable optimum reading of the fluid level.

The Burgmann thermosiphon system TS 6050/A001 meets all requirements to supply mechanical seals in accordance with the guidelines of API 682. The vessel is equipped with all essential connections for fitting additional components. It is used for the storage, pressure maintenance and cooling of buffer fluid in the sealing circuit. Pressurization is monitored by a pressure switch. The incorporated level switch issues a signal whenever the level of buffer fluid is too low.

Buffer fluid units of the SPA type perform all four functions of a buffer system essential for operating double seals – circulation and cooling of the buffer medium, pressurization of buffer fluid and compensation for leakage – in a standard package. Burgmann SPAs have a high standard of quality, are easy to operate and service, and are adaptable and rugged. Their function is based on the open circuit.

Gas supply systems (GSS) are designed specially for non contacting, gas lubricated mechanical seals. Gas (e.g. air or N2) from a supply network is controlled and monitored by the GSS in accordance with the requirements of seals that are to be supplied. A GSS can be equipped with alarm and shut-off functions which correspond to the safety standards applied. Central monitoring of measured values is possible on request. Basically, each GSS is separately designed to allow for the particular application parameters. This applies in particular to gas supply systems which are intended for the operation of DGS compressor seals.

The CSEaerostatic clearance seal, independent on direction of rotation, supplied as a preassembled unit. It is suitable for sliding velocities below 10 m/s and buffer gas dew point below -50 °C. It works free of contact, with a fixed clearance that is automatically adopted in accordance with the operating temperature.

Dry gas seal for compressors.
A double arrangement is used with low suction pressure when there is no flare but an available supply of neutral buffer gas at suitable pressure. Typical applications where product leakage to the atmosphere side is not allowed are to be found mainly in the petrochemicals industry, e.g. compressors for HC gas or other hazardous gases.

Dry gas seal for compressors.
This option is used as an emission-free arrangement with connection to a corresponding flare/vent.

Typical applications where small leaks of product gas to the atmosphere side are permitted include gas pipeline compressors and process gas compressors in the petrochemicals industry.

In the tandem arrangement, two single seals are placed one behind the other. The seal on the product side and the seal on the atmosphere side are able to absorb the complete pressure difference.

If no process leakage is allowed to the atmosphere and no buffer gas leakage allowed to the product, the tandem arrangement is used with an integrated intermediate labyrinth.

Typical applications where no product gas leakage is allowed to the atmosphere side are, for example, H2-compressors, natural gas compressors with a high H2S content (acidic gases), and ethylene and propylene compressors.

Robust dry gas seal for compressors - the DM TIN

Elastomer-free dry gas seal for compressors
The PTFE solution
High reliability by engineered PTFE sealing elements

Dry gas seal for extreme low temperature
down to minus 170°C (minus 274°F)

Mechanical seal for compressors and blowers
In case of double seal a buffer fluid chamber (1,5-3,5 bar over product gas pressure) is sealed towards both the product gas- and the bearing side with a mechanical seal.

Mechanical seal for compressors and blowers
In case of single arrangement the process gas meets the inner diameter of the stationary face. The buffer fluid acts against the outside diameter of the stationary face with a differential pressure of 1.5-3.5 bar. The throttle ring, i.e. the bushing seals the chamber against the atmosphere.

Dry gas seal for single stage steam turbines

BURGMANN magnetic couplings (MAK) are a leakproof sealing system for centrifugal pumps (vertical / horizontal) and positive-displacement pumps, as well as for agitators, vacuum pumps, sterile drives, and fans.

Braided packing made of aramide fibres with PTFE impregnation. Universally suitable for pumps in all fields of industry e.g. chemical and petrochemical industry, waste water, paper. High abrasive resistance and high stability. We recommend shaft sleeves to avoid wear of shafts. The surface hardness shall be 40-60 HRc (shaft or shaft sleeve).

Braided packing made of expanded flexible graphite fibres in combination with a high-quality lubricant.

Ramie-fibre packing with special PTFE-impregnation. Suitable for pumps, refiners, filters, valves in the brewing and beverage industry, ship building etc. Especially resistant to abrasive media e.g. in paper and pulp industry. It is a flexible, good controllable packing which requires little maintenance and treats shaft gently.

Black sealing compound on a PTFE-fibre basis with high duty lubricant. Very good chemical resistance for universal use in almost all industrial areas.

White sealing compound on a PTFE-fibre basis with high duty lubricant, especially for abrasive media, like e.g. in paper-and pulp industry.

Universal, white, wear resistant packing made out of synthetic-fibres.

PTFE packing with lubricant. For universal use in pumps, control valves and special designed applications in chemical, food and pharmaceutical industry. Soft packing with good emergency (dry-running) performance. High volumetric stability and cross-sectional density.

Economical cotton packing with grease/graphite impregnation

Seawater resistant impregnated cotton-yarn packing for stern tubes and rudder shafts, with seawater resistant impregnation. THE marine packing. Flexible, economic, easy to handle packing, unmistakable due to its red coloured special impregnation.

Economic and flexible cotton yarn packing with special light colour grease-impregnation. Preferably used for clean media in pumps, in simple clean applications (low temperature, low pressure, no acids or alkalines)

The good standard, which can compete with almost any gasket. Suitable for flange- and flange like connections in low pressure and low temperature applications. For general engineering applications, in mechanical and chemical industry, sanitary applications (Gas- and water supply). Many certificates (DVGW, KTW, WRC, VP401).

Can withstand applications at operation limits. In mechanical and chemical industry, sanitary applications (gas- and water supply) in low pressure- and temperature applications.

Much larger field of applications compared to other fibre-based seals concerning mechanical performance under temperature.

valve stem sealing set especially developed for the new requirements:
For high pressures and high temperatures, especially in TA-Luft applications, for standardisation without Live-Loading System.

Universally suitable for all valve applications in chemical, petrochemical and refinery applications.

An asbestos-free sealing material. The raw material is an exceptionally heat-resistant natural mica. Subjecting this exceptional raw material to a specially developed treatment invest the gasket with its thermoactive characteristics (from approx. 600°C).

Manhole ring, multidirectional orientated ePTFE Safety Gasket Rings with stainless steel reinforcement, are specifically designed for high demands on safety and tightness of oval hand holes, manholes and all kind of inspection ports of tanks and boilers. They are tested and permitted according to German TRD401 / VDTÜV Instruction Seal 100. The multidirectional fibrous structure and the unique construction of MultiTex Safety Gasket Rings with stainless steel reinforcement grant for a long life seal and reliability.

Sealant tape with self-adhesive strip

Universal sealing material for on-site making of seals

Self-sealing hand- and manhole doors in boilers of all forms and various suppliers (pressurized, hot water, steam)

All types of flanges in load bearing connections

ePTFE Universal-F sealant tapes consist of virginal expanded PTFE. The expansion process produces a micro porous fibrous structure which gives the product it's unique mechanical properties. For easy installation the tape is equipped with an adhesive strip.

Standard solution for chemical and petrochemical process industry, especially for high pressures. Universally suitable in pharmaceutical and food industry. Excellent for standardisation, due to best mechanical properties. Compared to state-of-the-art PTFE this seal is applicable in much higher pressure and temperature applications.

Universal gasket out of pure PTFE with minimized cold flow

Universally suitable for pharmaceutical and food industry, chemical and petrochemical industry as well as paper-industry. High mechanical resistance and optimized creep. Best chemical resistance to almost all acids and alkalines (pH 0-14).

Wherever drive shafts pass through bulkheads, Burgmann´s type 3200 and 3210 bulkhead seals present high degree of protection against flooding.

Axial gear box seals from Burgmann afford a number of advantages: very short overall length (similar to lip seals), high pressure stability, compensation of axial and radial shaft deflections, and the availability of split versions.

Type 3220 seals for retractable instrument carriers have a years-long track record of success in coping with high static pressures and large telescoping distances, e.g. on periscopes. Additional safety during emergencies is provided by the Pneumostop.

Being of modular design, the Burgmann type 4600 water-lubricated stern tube seal meets all of todays technical requirements of modern stern tube seals: convenient installation, little maintenance, no adjustments. Using a Pneumostop eliminates costly and time-intensive dry-docking. Maintenance and repairs can be performed with the vessel afloat.

Semi-split or fully split mechanical seals enable large-size water-jet propulsion systems to be repaired without expending money and time on drawing out the drive shaft. In conjunction with a stand still seal (pneumostop), it is possible to perform maintenance jobs with the vessel afloat.

Water-jet propulsion shafts on smaller vessels are usually equipped with unsplit seals because the effort likely in the event of a repair is far smaller.

Burgmann rotary kiln sealing systems: economic efficiency and environmental protection in production and waste disposal

A rubber bellows seal of short axial fitting length and large range of applications for mass-producing cold water pumps. Suitable for use in the home and garden, in whirlpool massage pumps, dishwasher pumps, plastic immersion pumps, vortex vacuum pumps, etc.

Unbalanced rubber bellows mechanical seal with single spring, which is independent of direction of rotation

Unbalanced, rubber bellows mechanical seal, which is idependent of direction of rotation.

An economically priced seal with conical spring for a wide range of applications. Recommended for tandem pumps, clean water pumps and pumps for home and garden.

Balanced single seal with conical spring, which is dependent of direction of rotation

Unbalanced single seal with multiple spring, which is independent of direction of rotation

Unbalanced single seal with conical spring, which is dependent of direction of rotation