Rubber Seal:
1:Matenrial:silicone,EPDM,nitrile,neoprene,Viton
SBR  and NR
2:Special rubber seals can  be made from extrusion rubber
profiles and then be joint by  moulding and  RTV
3:Square rings,quad rings,back-up rings,V-rings,T-seals,
wear rings,piston and  rod seals available