EPDM, NBR, SBR, NR, Silicone(VMQ), Neoprene(CR), HNBR, XNBR, FKM, FFKM, FVMQ, FLAS, PTFE, PU, ECO, IIR, ACR, nk...
Ikiwa kuna mahitaji yoyote maalum juu ya utendaji wa nyenzo, kama vile sugu ya joto, kupinga deformation, kuweka compression,