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Tecson Sealing Technology

Address: No.1,Huapeng Rd, Kandun District, Cixi City, Zhejiang Province, P.R.C

Tel: 0086-574-23707877

Fax: 0086-574-23707878



PTFE Gaskets Sealing Performance

Check the sealing of the PTFE gasket is usually measured to determine the leakage rate as the standard, the determination of the leakage rate of the best assessment of the quality of the main advantages of PTFE gasket, PTFE Gaskets it can directly reflect the gasket sealing performance.

In the GB / T l2385--1990 standard in the pipe flange with gasket sealing performance of A, B two test methods. Both test methods are not only suitable for PTFE gaskets, PTFE Gaskets but are suitable for asbestos rubber gaskets, PTFE Gaskets polytetrafluoroethylene coated gaskets, PTFE Gaskets metal coated gaskets, wound gaskets and metal gaskets.

1. Gasket loading system - should be able to provide the provisions of the gasket preload,

During the test, PTFE Gaskets the load of the gasket load should be less than 5% of the specified value and can control the constant loading and unloading speed

2. Media given system - should be able to provide the required test medium pressure,

During the test, PTFE Gaskets the medium pressure fluctuation should be less than the specified value. 5 0A;

3. Leak detection system - leak detection using the state equation method. On the outside of the gasket, the upper and lower flanges face a closed annular leaky cavity to measure the initial volume of the cavity. And the volume change correction coefficient K, PTFE Gaskets should be strictly calibrated, PTFE Gaskets leak detection system resolution should not be less than 10 "cm3, the system error should not be greater than 0.5%.

4. Rack - support

5. Test flange - using rigid simulation plane flange, flange thickness t, PTFE Gaskets and flange diameter D, the ratio of tf / D. ≥ 50 mm (50.98 kgf / mm2); sealing surface hardness is not less than HRC40; sealing surface roughness R plate should be between 5 ~ 10 tzm (equivalent to wonderful) The

 Teflon has excellent excellent overall performance, PTFE Gaskets high temperature resistance, corrosion resistance, non-stick, self-lubricating, excellent dielectric properties, very low coefficient of friction. The addition of any filler to PTFE that can withstand the sintering temperature of PTFE has a significant improvement in its mechanical properties. At the same time, keep other excellent PTFE performance. PTFE Gaskets Filling varieties are glass fiber, metal, metal oxide, graphite, molybdenum disulfide, carbon fiber, polyimide, EKONOL ... and so on, wear resistance, limit PV value can be increased by 1000 times.

Teflon has excellent chemical stability, corrosion resistance, sealing, high lubrication non-stick, electrical insulation and good anti-aging endurance. Can be in the temperature of + 250 ℃ to -180 ℃ long-term work, PTFE Gaskets in addition to molten metal sodium and liquid fluoride, the ability of all other chemicals, boiled in the water can not afford to change.

 PTFE engineering plastics, can be made of PTFE tube, rod, belt, PTFE Gaskets plate, film and so on. Generally used in high performance requirements of corrosion-resistant pipes, containers, PTFE Gaskets pumps, valves and the system of radar, high-frequency communications equipment, radio equipment. PTFE Gaskets Dispersions can be used as insulating dipping solutions for various materials and metal, glass, PTFE Gaskets anti-corrosion layers on the surface of pottery. Various PTFE ring, poly PTFE gasket, PTFE packing and other widely used in various types of anti-corrosion pipe flange seal. In addition, can also be used for spinning, Teflon fiber - fluorine (foreign trade name Teflon).