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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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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
Ball Valve Seats Used For LNG
Specification Range
Ball Valve Seat and Seal Rings
The most common fluoropolymer application is used as sealing material for Valves. We provide valve seats,seat inserts, thrust washers and backup rings, stem packings by wide range of materials, such as PTFE, filled PTFE, TFM , PCTFE, PEEK，Vespel®, PCTFE, PI, Nylon and Acetal.
Over the years, based on our own advantages in the field of high performance polymer materials, We've been working with valve customers all over the world to manufacture various soft seals & seats.
| Material Choice | Main Properties | Temperature Range |
| Virgin PTFE | Very low coefficient of friction and excellent chemical resistance. | -40°C to 260°C |
| 15% and 25% Glass Filled PTFE | Decreased compressive strength and lower deformation under load than virgin PTFE. Better wear resistance, higher compressive strength and lower deformation under load. | -40°C to 260°C |
| 5%,15% and 25% Carbon Filled PTFE | Improved mechanical strength compared with virgin PTFE. Excellent wear properties, retains excellent frictional properties, good choice for seals and rings in dynamic and high-pressure applications | -40°C to 260°C |
| 5% MoS2 Filled PTFE | Increased PTFE properties of hardness and wear resistance. Increased sliding properties and decrease friction. | -40°C to 260°C |
| Stainless Steel Filled PTFE | Extremely hard wearing. Excellent strength and stability under extreme loads and elevated temperatures. | -40°C to 260°C |
| TFM Series | Much denser polymer structure than Virgin PTFE. Displays better stress recovery. | -80°C to 260°C |
| PCTFE | Ideal sealing material for lower temperature and high pressure, good mechanical properties. Excellent for LNG, Cryogenic and Oxygen use. | -240°C to 120°C |
| PEEK | Excellent chemical resistance and mechanical properties at elevated temperatures. | -40°C to 260°C |
| Carbon Filled PEEK | Many similar properties to Virgin PEEK. Particularly suitable for elevated temperatures and high load situations. | -40°C to 260°C |
| PFA | Excellent chemical and temperature resistance, electrical insulation properties | -100°C to +260°C |
| UHMWPE | Highly resistant to corrosive chemicals, with the exception of oxidising acids and organic solvents. | -60°C to +80°C |
| Acetal and Delrin | Good resistance to wear and deformation under load. | up to 80°C |
| PI (Polyimide) | Significantly higher modulus, excellent wear and friction properties, good thermal-oxidative stability and high mechanical strength | up to 320°C |
| Customized Material by HONGDA | Designed & produced as per specific applications | / |
Hongda provide valve seats materials (PTFE, TFM, filled PTFE, PCTFE, PEEK,UHMW, Vespel®)- seats and seals for all types of valves including ball valves, gate valves,butterfly valves and plug valves.