... Wear and tear resistance, Durable;· UL & SGS certification;· Rubber Material: NBR, HNBR, XNBR, EPDM, CR, NR, SBR ... red, blue, yellow for rubber material, for silicone, any colors are available according to your panton #; · Features: 1 ... features of all kinds rubber material, please choose the suitable one for your items, thanks. Material NameHardnessWorking ... 1050LF, 4079, 6375, 7075 NBR Rubber Parts