... ratio 3.OEM&ODM: YES Product Description Item nameFlat o ring MaterialSilicone,,FKM,FPM,VITON A, VITON B, GF ... /FEDEX/UPS express fee will be on the buyer's account.2.For large quantity, deliver by sea. ... according to your drawings & samples. Our main products contains O-type Loop, U-type Loop, Y-type Loop, ... us, thanks. Details Show practical silicone rubber flat o ring HNBR FKM FPM VITON A VITON B GF ...