PTFE double-coated O-ring 37.5*3.55

PTFE double-coated ring 3. Containers, heat exchangers, boilers, pipeline flanges, gas compressors
Product Description 3 PTFE double-layer seam-coated rings are made of polytetrafluoroethylene sheets coated in silicone or There are two layers of inner and outer layers on the fluorine rubber core, and the circumferential seams are staggered.
3 is an upgraded product of 3. Except for the swelling resistance, it has all the other advantages. It has higher pressure resistance, better softness, and is easier to install.
Main advantages
It is extremely resistant, resistant and versatile. It is suitable for almost all chemical media. Under normal operating temperature, it is only corroded by a few chemicals, which are only listed here. Compatible chemicals such as some metal bases, fluorine and some halides are not compatible.
Upon contact, some high-concentration chemicals will react with it. At high temperatures, it will be affected by metal hydrides such as boric acid, aluminum chloride, ammonia and some amino acids and imino (R) Erosion of organic matter. When the temperature reaches ℃, it will also be corroded by the chronic oxidation reaction of acid.
If used under these extreme conditions, products must undergo special testing. 3 is generally chemically inert to other chemicals except those mentioned.
, wide temperature range - ℃ ~ ℃, can be used at high temperature of 3℃ for a short time
The existence of the outer coating with good compression resistance makes 3 have good resistance to hardening and brittleness, and at the same time The silicone rubber or fluororubber inner core allows 3 to maintain good elasticity at high temperatures of ℃. Test results show that the 3 sealing ring formed by combining the physical properties of silicone rubber or fluorine rubber with the chemical properties has good compression resistance while maintaining rubber properties.
Anti-friction Due to the extremely low friction coefficient (.) of polytetrafluoroethylene, it becomes the variety with the smallest friction in the ring family. It is of great help in reducing equipment wear and improving equipment power and efficiency. support.
, High pressure resistance can be up to 3. It is recommended to use a retaining ring type pressure ring for the above pressure.
, Excellent sealing durability and long service life 3 Compared with any other rubber or pure ring, it has unparalleled sealing performance and long life, especially when used in harsh media.
, moderate hardness. The average hardness of sealing rings of different materials is:
Solid silicone rubber
Solid fluorine rubber
Hollow silicone rubber
, clean and environmentally friendly at normal operating temperatures Its non-toxicity, cleanliness and temperature resistance make it one of the necessary production equipment accessories in scientific research and production fields with extremely high hygiene requirements such as food, medicine, fine chemicals, and bioindustry.