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RO Membrane Elements Fittings For Water Treatment
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Spring Energized Seals Used For Cryogenic Valve
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Ball Valve Seats Used For LNG
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Plastic Machined Parts PTFE, PEEK, PCTFE,TFM
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Carbon Filled PTFE Rod And Glassfiber Filled PTFE Used For Valve Sealing
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High Purity PFA Tube Used For Semi-Conductor(Semi-57 Passsed)
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PVDF Sheet Manufacturer In China
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KEL-F PCTFE Rod Used For Cryogenic Valve Sealing
Polymer Seals
Specification Range
Polymer Seals
Polymer materials are an excellent choice for high-performance, chemical resistance, high-pressure environments. For example: Seals used in the oil and gas industry must withstand high temperatures, high pressure, and a chemically hostile environment. The conditions limit the material used to make the seals for this industry. The most common types of materials include PTFE, TFM, PCTFE, PEEK, UHMW
| Material type | PTFE, TFM, PCTFE, PEEK, PFA, UHMW, POM |
| Certification: | FDA, ROHS, REACH, ISO |
| Raw material brand | DAIKIN, 3M,DUPONT, Solvay, Victrex |
| Minimum Order Quantity: | 100PCS |
| Operating temperature: | -180°C~+260°C |
| Supply Ability: | 50,000PCS/month |
The Mechanical seal is a leakage control device. Hongda offers a long list of seal products made of PTFE, TFM, Filled PTFE, PEEK, PCTFE, ETFE,PFA,UHMW, PA
Technical standard
| Choice for Polymers Sealing Materials | |||
| Material Name | Compound % | Properties | Color |
| PTFE | / | Very low coefficient of friction and excellent chemical resistance. | White |
| Glass Filled PTFE | Up to 30% | Improved ware resistance, compression strength, creep resistance, chemical resistance. | White cream |
| Carbon Filled PTFE | Up to 30% | Improved electrical and termal conductivity, resistance to load, low coefficient of friction in dry, water, steam applications, chemical resistance. Superior ware resistance | Black |
| Graphite Filled PTFE | Up to 20% | Improve wear resistance, decrease friction and increase sliding properties against soft metals- chemical inertness. Improve the temperature resistance in some way. | Black |
| Bronze Filled PTFE | Up to 60% | Improved compression strength, wear resistant, high thermal conductivity, resistance to abrasion. Reduced chemical resistance. | Dark Brown |
| Molybdenum disulphide(MoS2) Filled PTFE | up to 5% | Increased PTFE properties of hardness and wear resistance. Increased sliding properties and decrease friction. | Blue azure |
| PEEK Filled PTFE | Up to 20% | Increased thermal resistance, sliding properties, surface hardness. Superior properties on dynamic applications. | Light Brown |
| PEEK | / | Excellent mechanical properties including strength, rigidity, impact resistance, low wear rate and low coefficient of friction, retained over a wide range of service temperatures | Light Brown |
| PEEK compound | / | Improves technical and chemical properties like deformation under load, wear resistance, thermal expansion and electrical conductivity. | / |
| PVDF | / | Resistant to UV radiation and offers high mechanical strength and welding properties. | Natural |
| PCTFE | / | Ideal sealing material for lower temperature and high pressure, good mechanical properties | White translucent |
| PFA | / | Excellent chemical and temperature resistance, electrical insulation and excellent process ability. | Natural |
Application fields
● Valve seats and seal rings
● Valves/conduits for semi-conductor manufacturing
● Gaskets and gasket tapes (ePTFE)
● Lip seals and rotary seals
● Chevron seals (V-packings)
● Hydraulic and pneumatic seals
● Bellows and manifolds for pumps
● PTFE ferrules
● Sealing guides and strips
● Spring-energized seals
● Pump manifolds