1,o ring seal kit 2,various specification and good quality 3,NBR,VITON,KFM,SILICON,EPDM. 4, ... by customer`s drawings or samples. 3.we have various specification and More than 4000 sets standard size O-ring tool ... /TS 16949. thickness0.5mm to 10mm temperature-resistant -45C to 270 C Tolerance +/-0.01 mm to +/-3.05 shippment FOB ...