Sunscreen import O-ring EPDM O-ring material imports due to the different materials, product performance is different. 1) nitrile rubber nbr import O-ring, its air tightness, has a very excellent oil resistance and abrasion resistance, a nitrile rubber is the most versatile product, also commonly referred to nbrO-ring. 2) Viton (FKM or VITON) import O-ring is one of the most versatile seal products. Since fluorine rubber having various excellent performance, and is widely used in petroleum, chemical, aviation, aerospace and other sectors. Viton FPM has a high temperature resistance, can be used in -40 ℃ ~ 240 ℃ environment. VITON fluorine rubber resistant to strong oxidants, oil, acid, and fluorine rubber can then high vacuum and high altitude environments, but also suitable for oil environment. 3) silicon silicon rubber o-ring has a very wide range of low temperature and high temperature performance (-60 ~ 250 ℃), silicone seal products are widely used in food, household appliances, lighting, medical equipment and other related industries seal, imported silica gel O-ring referred to SIL import O-ring. 4) EPDM o-rings with good ozone resistance, heat resistance and chemical resistance, and EPDM O-rings also have good electrical insulation properties and hot water. Wall top - professional import seal manufacturers to provide products: 1.o-ring, o-ring repair box, star, ring 2.ed ring, c-rings, rubber balls, rubber washer 3. Gasket, Teflon ring, rubber ring seal skeleton 4: TC, TB, VB, VC 5. skeleton dust seal: DKB, GA, RB, EC 6. Polyurethane seal: UHS, UNS, DHS, YXD, YXd , YXA, QYD, QYd, J, JA, JB, FA 7. sliding seal combination: Grameen circle, Manchester seal, wear-oriented band, wear guide ring 8. The pneumatic seal: APA, AGP, APP, PSD, USH, MYA, GLY, UPH, PZ, LBH, PDU, PAR, EU, EM, AVB, AEI, CTU 9. special pieces of rubber, rubber parts OTP- is specialized in producing high-quality import O-ring, the Division I superiority in this regard: 1. has a very good sealing effect, and with the increased pressure of the hydraulic oil and automatically increases the sealing effect; even at high pressure and high temperature and other harsh working conditions, hydraulic seal leakage and no a significant increase in the amount of leakage is minimal. 2. In order to avoid or reduce a low pressure hydraulic equipment and other undesirable phenomena crawl, seal with a low static friction and dynamic friction, and the friction coefficient should be very stable, that friction is small. 3. The seal may be required due to long-term immersion in hydraulic oil, easily swell, dissolve or harden embrittlement, so that the loss of the sealing effect, thus requiring a good seal compatibility. The seals are all imported raw plastic materials, has good flexibility, heat resistance, cold resistance, pressure resistance, wear resistance and certain physical and mechanical strength, and long service life. 5. Our imported production of seals easy to manufacture and use, the sealing surface machining high precision, beautiful appearance, almost no flash burr and low grid cheap.