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DYNAMIC SEALING
External or Internal Interactive Sealing Solutions
Unlike static seals, APM's custom molded dynamic elastomeric professional seals are designed to transmit mechanical energy, either internally or externally applied, depending on your application and environmental challenges. They flex and move without degradation or sealing compromise. Please submit your design requirements and we'll rapidly respond with a cost-effective solution and quote. |
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General Information
HTMS Metal- C-Ring professional seals are made from high temperature alloy strip. The strip is cut to the required length and tig welded. The C-shape is then formed in a tool or is roll formed for bigger sizes. HTMS Metal C Rings are a logical development over our popular Metal O Ring. Metal C Rings have a better spring back then same size Metal O Rings. The seating load or the required bolting force is lower than for similar sized Metal O Rings. HTMS Metal C Rings will compensate greater flange rotation and maintain positive sealing load, better than Metal O Rings.
For sealing thin gas or low viscosity fluids, HTMS recommend to soft plate the bare metal seal with such materials as silver, gold or tin. Also PTFE as a coating is available.
For extreme low leakage requirements at elevated temperatures HTMS also produces spring energized metal C Rings. This CS design is basically a metal C Ring with an inserted high tensile spring.
Metal C Ring availability
- From 6 mm to +3000 mm diameter
- Cross section from 0, 89 mm to 12, 7 mm
- In house plating, Silver, Gold, Tin and others
- Spring energized versions for extreme tightness
- Available in shaped forms
- For internal or external pressure
Metal C Rings capability
- Temperatures from cryogenic (- 270°C) up to high temperatures (+ 900°C)
- Ultra hard vacuum and pressures op to +300Mpa
- High pressure capability
- Lowest leak rate
- Radiation resistant
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General Information
HTMS Metal- O-Ring professional seals are made from high precision metal tube. Contrary to flat gaskets, HTMS Metal-O- Rings require extreme low bolting load. Because they feature a certain resiliency or spring back, HTMS Metal O Rings will compensate minor flange rotation and maintain positive sealing load to the sealing surface.
For sealing thin gas or low viscosity fluids, HTMS recommend to soft plate the bare metal seal with such materials as silver, gold or tin. Also PTFE as a coating is available.
HTMS Metal O Rings are made for internal or external pressure. For high pressure application HTMS advises vented or system pressure assisted Metal O Rings.
For extreme low leakage requirements at elevated temperatures HTMS also produces spring energized metal O Rings. This OS design is basically a metal O Ring with an inserted high tensile spring.
Metal O Ring availability
- From 6 mm to +3000 mm diameter
- Cross section from 0, 89 mm to 12, 7 mm
- In house plating, Silver, Gold, Tin and others
- Spring energized versions for extreme tightness
- Available in shaped forms
- For internal or external pressure
Metal O-Rings capability
- Temperatures from cryogenic (- 270°C) up to high temperatures (+ 900°C)
- Ultra hard vacuum and pressures op to +300Mpa
- Handles hydrogen gas up to non- Newtonian fluids
- Moderate pressure capability
- Lowest leak rate
- Radiation resistant
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Suppliers of mechanical seals are used for the sealing of rotating shafts against a stationary housing, e.g. in pumps and agitators. The stationary" part of the seal is usually located at the housing, the rotating" part is fixed on the shaft. The high-precision face-machined sliding faces rotate axially in opposition. The sliding faces are pressed against each other by means of spring force, thus preventing the opening of the seal. The seal faces are statically sealed against the housing and the shaft by secondary professional seals (O-rings). With the entry of the pumped medium into the minimal sealing gap a lubricating film is generated and the sealing effect is thus obtained.
The design, arrangement and combination of materials of the seal is basically determined by pressure, temperature, speed of rotation and quality of the pumped medium. Shaft diameters of 5...500 mm, pressures from 10 torr ....250 bar, temperatures from -200°C... +450°C and sliding velocities up to 150 m/s limit the operating range of mechanical seals. Additional seal supply systems or buffer fluid systems may be required, dependent on the mode of operation, the quality of the medium and the seal arrangement.
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Alumina ceramics:
AI2O3-99% AI2O3-97%
Purigy--------------------% 99.5 97.0
Density-------------------g/cm3 3.89 3.71
Hardness Vickers1kg-------Kg/mm2 2000 1900
Modulus of Elasticity-----GPa 330 280
Fracture toughness--------Mpa*m1/2 3.8 3.5
Flexural Strength (MOR)---MPa 330 320
Compressive Srrength------MPa 2600 2300
Thermal Expansion (CTE)---10-6/K 8.2 8.0
Thermal conductivity------W/(m.K) 30.0 26.0 |
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OmniSealŽ type Raco is a spring energized PTFE professional seal, specially designed for cryogenic sealing conditions (-260°C). The full circle, heavy load metal spring, pre-loads the seal lips uniformly.
With lower load springs, this design is also the best for high temperature applications (+300°C). |
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Due to our innovative manufacturing concept we are able to produce all standard and special professional seals for your dynamic system fast and easy.
Furthermore we offer a huge variety of sealing materials with different properties.
Please contact our applications engineering department at our Headquarters in Austria under +43 3572 82555-0.
We´ll find a solution for your sealing problem! |
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The design features are single industrial seal, unbalance, independent of the direction of retation, single spring and elastomer bellows. 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.
Performance Capabilities
d = 10 - 100 mm
p = 12 bar
t = -20 120 °C
vg = 10 m/s |
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Extruded and jointed "O" rings are our preferred method of production, but moulded versions are available if specifically requested.
Both silicone & fluorosilicone with all varieties of fillers are available for the manufacture of "O" rings.
The advantages of vulcanised "O" rings are:
- Cost Effective
- No tooling costs
- Reduced lead times
- Better surface finish (zero flash)
- Allows hollow sections to be used for lower compression force
-Custom lengths easily produced (up to approx 2m developed length) |
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Hot-pressed graphite:
Density-------------------g/cm3---------1.68
Hardness------------------HS------------65-80
Compressive Strength------MPa-----------147
Flexural Strength (MOR)---MPa-----------54
Frictional Coefficient----%-------------0.15
Porosity------------------MPa-----------0.3
Carbon Graphite:
Epoxy Impregnated (H) M106H M120H N205H M252H
Density -----------------g/cm3 1.75 1.70 1.70 1.72
Hardness-----------------HS 85 80 70 45
Flexural Strength (MOR)--Mpa 65 60 60 45
Compressive Strength-----MPa 200 180 180 120
Furan Impregnated (K) M106K M120K M205K M252K KC170
Density------------------g/cm3 1.75 1.70 1.70 1.72 1.82
Hardness-----------------HS 90 85 70 48 80
Flexural Strength (MOR)--Mpa 67 62 62 47 68
Compressive Strength-----MPa 200 180 180 120 200
Phenolic Impregnated (F) M106K M120K M205K M252K KC573
Density -----------------g/cm3 1.75 1.70 1.70 1.72 1.85
Hardness-----------------HS 85 80 70 45 110
Flexural Strength (MOR)--Mpa 60 55 55 40 85
Compressive Strength-----MPa 200 180 180 120 370 |
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OmniSealŽ professional seals with special designed back-up rings are capable of handling extreme high temperatures / high pressure (HTHP).
>High pressure and temperature combinations.
>Temperatures from -270°C to +320°C.
>Hard vacuum up to +3000 bar. |
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Due to our innovative manufacturing concept we are able to produce all standard and special professional seals for your hydraulic system fast and easy.
Furthermore we offer a huge variety of sealing materials with different properties.
Please contact our applications engineering department at our Headquarters in Austria under +43 3572 82555-0.
We´ll find a solution for your sealing problem! |
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James Walker is the worldwide one-stop-shop for all hydraulic sealing requirements.
Our family of hydraulic sealing components provides the optimum sealing solutions for almost every hydraulic application - from the most accurate instruments and control actuators suppliers up to the heaviest forging and extrusion presses.
Each product has been specially developed and proven to give:
- Optimum equipment performance
- Reduced leakage
- Low friction operation
- Long trouble-free operating life. |
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| The Labyrinth seal is an effective barrier against water and other contaminants that destroy professional bearings. Non-contacting rotary and stationary elements provide a restricted flow path and utilize centrifugal force and gravity to prevent intrusion of contaminants into the bearing chamber. Unlike common lip seals, the Labyrinth Industrial seal will not damage shafts and has a virtually unlimited life. |
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SKF Economos provides you customized poducts, our knowledge and experience gained from long term customer relationships are important factors which enable us to understand and solve your sealing requirement:
- prompt manufacturing of professional seals and components with more than 4,000 mm diameter
- "on-site" seal installation service by brazing endless seals
- saving of installation time
- tremendous cost savings (reduced professional fitting costs and reduced plant downtime) |
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Customized production of o-rings
You can't find what you're looking for in our vast range? No problem - COG customised production will be pleased to help with your special requirements. Even the most "unconventional" professional seals can be individually manufactured at our own production facilities (in-house compounding, in-house development, in-house toolmaking). In the materials and qualities of your choice - within a matter of days. Singly and in large or small batches. It's an offer that few other manufacturers can match. And another thing that you'll be pleased to hear: customised production at COG costs less than you think. Let's talk about your aims!
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Competitively priced professional seals for rotary industrial shafts
- Suitable for many plant and machinery duties.
- Full range of designs for different working environments.
- Choice of elastomeric lip materials and metal casings.
- All standard shaft sizes included. |
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Over past years Trelleborg Bakker specialists have cooperated closely with the users of rubber professional seals to design and produce high quality systems that would meet the client's most stringent requirements. Based on technical know-how, and supported by tests when necessary, Trelleborg Bakker has solved complicated sealing problems and many of these solutions are now available as standard seals.
The sealing lip activated by the differential pressure over the seal.
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| O-Rings Professional seals in standard and metric dimensions and different compounds always available ex stock. |
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O-rings, produced according to DIN 3771: All current materials: ACM, AU, CSM, CR, EPDM, EPM, FEPM, FFKM, FPM, FYMQ, HNBR, IIR, NBR, NR, PTFE, PVMQ, VMQ.
Inside diameter from 0.74 to 1400 mm; Strength of thread from 0.6 to 30mm
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Our seven million stocked 'O' professional rings include inch sizes and metric sizes to a range of international, national and industry standards.
These are held in a variety of general and high performance elastomers to suit the vast majority of industrial and specialist professional oil and gas sector applications. |
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* LionseleŽ P - for pistons :
- Compact professional seal with low levels of dynamic and breakout friction.
- Instant response to pressure plus low power consumption.
- Maximum operating pressure: 400bar.
- Maximum surface speed: 5m/s.
* SoloseleŽ G - for rams, rods, glands & pistons :
- Compact and robust single-element seal.
- Excellent performance at high or low pressures.
- Flexible chamfered lips for high integrity sealing.
- Maximum operating pressure: 420bar.
- Maximum surface speed: 0.5m/s.
* SoloseleŽ S - for pistons :
- Robust double-acting seal.
- Fully moulded one-piece design with integral
anti-extrusion element for long life.
- Maximum operating pressure: 420bar.
- Maximum surface speed: 0.5m/s.
* Twinset - for rods, glands & pistons :
- For older plant with up-stroking/gravity return rams.
- Traditional sizes ranges readily available.
- More advanced designs are now recommended for most Twinset duties. |
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Due to our innovative manufacturing concept we are able to produce all standard and special professional seals for your pneumatic system fast and easy.
Furthermore we offer a huge variety of sealing materials with different properties.
Please contact our applications engineering department at our Headquarters in Austria under +43 3572 82555-0.
We´ll find a solution for your sealing problem! |
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We manufacture wide ranges of sealing components for hydraulic and pneumatic applications from engineering plastics, including:
- U rings
- Back-up rings
- Cup professional seals
- Wipers
- Vee packs
- Double-acting and single-acting fluid seals. |
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These professional seals are designed to operate with tube industrial testing machines that repeatedly seal and release the steel tube ends as part of the hydrostatic testing process. The quality of the seals used is a crucial factor in the reliability of such machines, and therefore our tube test seals offer the highest professional levels of performance.
Manufactured from high tensile, impact resistant polyurethane, they provide excellent wear resistance and can operature at high or low pressures. They incorporate a special lip professional profile to enable tube entry without seal damage. |
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| Broad chemical resistance, except against liquid alkaline metals and fluorine gas under pressure. Good sliding qualities, low wear and tear. Temperature range from -200 °C to +260°C. PTFE has hardness of approximately 95 °Shore and installing these O-rings in split grooves is recommended or alternatively the use slit or sheathed types due to the low elasticity. |
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