With over 15 years development, Tihai Sealing Products Co.,Ltd. have become a leader China PU seal manufacturer of seal components and machine tool accessories. We had obtained international certificate of ISO9001:2000 and QS9000 in 1996 and got the certification of ISO/TS16949 in 2003. And we produce all kinds of customized PU seals in varies materials of engine system (including exhaust system and muffler) in automobiles and motorcycle. While producing products of our own brand, we also provide OEM products with origin production of some famous brands such as B+S, NOK, TTO, VALQUA and DZ.

H-NBR H-nitrile rubber is a hydrogenated acrylonitrle butadiene rubber. This material is suitable for applications involving aliphatic hydrocarbons such as fuel, propane & butane, mineral oils & greases (resistant to short temperature loads of up to +170"C), vegetable & animal fat or oil. Further more rubber -H may be used in many diluted acids, alkalies & salt solutions, even at elevated temperature ocs, as well as in glycol water mixtures up to + 150"C. Please note: H-NBR will deteriorate in water & silicon oils & greases if these contain anticorrosives, eg. radiator antifreeze. H-NBR is not suitable for fuels with high content of aromatic compounds (four star petrol, alcohol mixture), ketones, esters, ethers & chlorinated hydrocarbons such as trichloroethylene or tetrachloro Ethylene.

PU is a thermoplastic polyurethane elastomer. Its outstanding features are usually high resistance to abrasion, low compression set, high rigidity & high tear strength. While its main application is seal technology [lip seals, u-seals, wipers, chvron packing, special seals), it may also be used for dampers & machined parts. Products made from this material can be used on commercially available hydraulic fluids & in water (up to 60 degree cent.) & upto 400 bar (standard seal design & extrusion gaps).

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