One, PTFE+ carbon fiber +NBR imported grill circle
The ring is composed of a rubber O ring and polytetrafluoroethylene. The material is PTFE + NBR. Under special circumstances, the rubber elastomer butyl clear gel NBR adopts fluorine rubber FKM. It can be divided into the grill ring and the grill ring for the hole, but the sealing effect is the same. It produces higher initial contact stress on the seal surface according to its own deformation, and prevents the leakage of the pressure free liquid. When the hydraulic cylinder works, the pressure liquid is extruded by the elastic deformation of the O - shaped seal to the limit of the square seal, which makes the inlet ring close to the seal surface and produces a higher additional contact stress with the pressure increasing with the pressure of the pressure liquid, and together with the initial contact stress to prevent the leakage of the pressure liquid together.
Two. Introduction of PTFE+ carbon fiber +NBR imported grai ring (imported PTFE gasket)
(English abbreviations for Teflon or PTFE and F4) are called "plastic king" because of its wide application. Chinese transliteration is called "TEFLON", "TEFLON", "TEFLON", "TEFLON", "TEFLON" and so on.
Polytetrafluoroethylene is a high grade compound composed of tetrafluoroethylene, which has excellent chemical stability and corrosion resistance. It is one of the best corrosion resistant materials in the world. Besides molten metal and liquid fluorine, it can resist all other chemical drugs. It can not be changed in the water of the king's water, and is widely used in various needs. To resist the conditions of acid and alkali and organic solvents), sealing, high lubricated non stickiness, electrical insulation and good aging resistance, high temperature span (able to work for a long time at the temperature of +250 C to -180 C).
Polytetrafluoroethyl itself is not toxic to humans, but ammonium perfluorooctanoate (PFOA), which is used in the production process, is considered to be carcinogenic.
Its birth has solved many problems in the world such as chemical industry, petroleum, pharmacy and so on. It has been widely used as a sealing material and filling material.
Three, PTFE+ carbon fiber +NBR imported grai ring (NBR butadiene rubber material brief)
1) NBR butadiene rubber
A. NBR butadiene rubber is prepared by copolymerization of propane and butadiene. The general temperature range is -40~120 C. As one of the commonly used rubber nitrile rubber seal materials and imported O ring current.
The rubber parts made by B., especially the sealing parts, are widely used in the fluid medium such as fuel tank, lubricating oil tank, oil system hydraulic oil, gasoline, water, silicon grease, silicon oil, two ester lubricating oil, glycerol system hydraulic oil and so on. It can be said that butadiene rubber is a widely used rubber seal with low cost and low price.
The advantages of C. NBR butadiene rubber
Oil resistance, water resistance, solvent resistance and high pressure oil characteristics are excellent.
Good compression distortion, abrasion resistance and elongation.
D. NBR NBR defects
It is not suitable for polar solvents, such as the same kind, ozone, alkyl hydrocarbon and land imitation.