Small rubber bulb 1)Quality;Meet to SGS standard 2)Factory ... bulb 3)OEM of rsiliconebulb 4)Delivery time:7 days Small rubber bulb Material NBR, NR, EPDM, FKM, SBR, Silicone, Neoprene ... Duro 30~80 Technics designed by 3D high accuracy, small error Finish diepressingMaterial- We use various kind of polymers ... on material. See Material Performance Data for specific information. Small rubber bulb