... ring,,etc for different rubber, likes viton , NBR, CR, etc x-ring, o-ring, square ring,,,etc for new sizes or ... .hydraulic sealing items.backups , dowty seals, u seals,o rings, wipers, oil seals, piston seals, v packings, rod seals, wear rings ... the different type in different sizes.good quantity , better price. X-rings, o ring kit, square rings