1,o ring seal kit 2,various specification and good quality 3,NBR,VITON,KFM,SILICON,EPDM. 4,make O ... MVQ(Silicon rubber), VITON.etc2.We also make O-rings by customer`s drawings or samples. 3.we ... specification and More than 4000 sets standard size O-ring tool.4.Different color is available5.Characteristics ... .5mm to 10mm temperature-resistant -45C to 270 C Tolerance +/-0.01 mm to +/-3.05 shippment ...