Material of silicone, EPDM, NR, NBR, SBR, Viton, Neoprene, etc. Hardness from 30 degrees to 90 degrees. our products outside diameter size from 0.4 inches to 10 inches. Inner diameter from 0.2 inches to 9.9 inches.Cut width ≤20mm,Tolerances ≤±0.03mm.Material of silicone, EPDM, NR, NBR, SBR, Viton, Neoprene, etc.Hardness from 30 degrees to 90 degrees. lathe cut gasket