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PTFE,Teflon double layers encapsulated O-Ring with VIton or Silicone

Mianyang Prochema Commercial Co.,Ltd.
Mianyang Prochema Commercial Co.,Ltd.
City: Mianyang
Province/State: Sichuan
Country/Region: China
Tel: 86-816-6075677
Contact Person:
Mr Mr. gus zhang

PTFE,Teflon double layers encapsulated O-Ring with VIton or Silicone

Place of Origin : China
Payment Terms : T/T, Western Union, MoneyGram,
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PTFE,Teflon double layers encapsulated O-Ring with VIton or Silicone


All-inclusive fluoride plastic O-ring fluorine plastic as a cladding material, rubber O-rings and O-ring as an

elastic spring core manufacturing all standard and non-standard series Series O-ring. The product is the use

of special high temperature fluorine rubber and plastics, a special process composite made of seal products, it has a rubber O-ring has a low compression set properties, but also has a fluorine resin specific heat, cold,

oil, abrasion, weathering resistance, chemical corrosion. Fan can be widely used in various static and dynamic seal occasions, it can replace all conventional rubber O-ring.

All-inclusive fluoride plastic O-rings are widely used in aerospace, automotive, chemical, petrochemical,


chemical, pharmaceutical industry, medical equipment, food industry, biotechnology, clean water, machinery industry, sewage treatment.

Specifications: Diameter Minimum 16mm, the smallest wire diameter 2.65mm, the maximum size limit

Uses: Pumps and valves, reactor vessels, mechanical seals, filters, pressure vessels, heat exchangers, boilers, pipeline flange, gas compressors

Description: RD31 tetrafluoroethylene double seam coated O-ring, is the use of PTFE Teflon sheet coated with a special process silica or fluoro rubber inner core, there are two layers inside and outside the ring to the joints staggered 180 °.

RD31 is RD30 upgrade products, in addition to anti-swelling resistance than RD30, other advantages have, and higher pressure, better flexibility, easier to install.

The main advantage

1, resistance and extremely versatile, suitable for almost all chemical media at temperatures under normal use, PTFE only by a few small chemical erosion in this list are not only compatible with chemicals, such as some alkali metals, fluorine and some of the halide is not compatible with PTFE.

When contacting PTFE, high concentrations of some chemicals will react therewith, at elevated temperatures, PTFE will be 80% NaOH and KOH, metal hydrides such as boric acid (B2 H6), aluminum chloride, ammonia (NH3) and some amino acids (NH2) and imino (R = NH) organics erosion. At temperatures up to 250 , it will be eroded chronic oxidative reaction of 70% nitric acid.

If under these extreme conditions, products are also subject to special testing. In addition to those mentioned chemicals, RD30 other chemicals typically exhibit chemical inertness.

2, applicable to a wide temperature range of -60 ~ 260 , can be used in a short time high temperature 300

3, good compression resistance PTFE outer coating makes the existence of anti-RD31 good hardening properties and resistance to brittle, while silicone rubber or fluoro rubber inner core makes RD31 at a high temperature of 205 can still maintain good flexibility. Test results show that the physical properties of silicone rubber or fluoro rubber and chemical properties of PTFE combine RD31 ring is formed, while maintaining the properties of rubber, but also has good resistance to compression.

4, since the anti-friction PTFE Teflon low coefficient of friction (0.29), making it the O-ring family friction force smallest species, to reduce equipment wear and improve equipment efficiency power and a great help and support .

5, high pressure resistance up to 35Mpa, 5 Mpa or more is recommended to use a pressure ring type pressure ring.

6, excellent sealing durability, long life RD31 compared to any other made of rubber or pure PTFE O-ring seal and has an unparalleled long-life, especially in demanding media applications.

7, the average hardness moderate hardness of different materials RD31 ring as follows:

Solid Silicone Rubber: 75-85

Solid Viton: 85-90

Hollow silicone rubber: 70-75

8, clean environment at normal temperature non-toxic, clean and temperature resistance make it a highly food, pharmaceuticals, fine chemicals, bio-industry and other health requirements of scientific research, one of the producers in the field of manufacturing



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