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Rubber: NBR, EPDM, SIL,IIR,SBR, VITON, etc. &nbs20090819 http://ecplastic.en.ec21.com/Silicone_O_Rings--3689574_3689696.html Silicone Rubber Test Report ??/span> Hardness Shore A 70 Tensile Strength Mpa 7.0 Elongation % 230 20090722 http://3050411136.en.ec21.com/O_Ring_Face_Seal_Fittings--3648353_3671546.html Ningbo SiYu M&E CORP. s steel and stainless steel o-ring face seal fittings meet all design and performance requiremen20090715 http://kitmf.en.ec21.com/O_Ring--3445452_3445453.html Description: We can supply many different kinds of O Rings base on AS -568 series, PG series, National Standard, Int20091107 http://yalida2008.en.ec21.com/Rubber_O_Rings--3589519_3589712.html ) Strictly as per customers' samples and drawings 2) Share half of the tooling cost, or no charge tooling cost 20090605 http://kingcamry.en.ec21.com/D_Ring_O_Ring--3333596_3340425.htmlring,o ring,square ring,diamond ring,wheel,metal ring,metal loop,alloy ring,d-ring,o-ring,square-ring,metal label,logo,20090524 http://dfseal08.en.ec21.com/PTFE_Envelop_O_Ring--3364401_3364634.htmldiaphragm PTFE tefmet gasket PTFE envelop gasket PTFE envelop o ring waiting for your inquiries. 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