Wholesale - 225pc NITRILE O-RING ASST .- 18 of the most used O-ring sizes in one organized PVC case. .- Nitrile rings resist heat, most petroleum and silicone fluids, hydraulic and non-aromatic fuels and solvents .- SAE sizes: (10)3/32''x 15/64''; (20)1/8''x 1/4''; (20)5/32''x9/32; (20)3-16''x5/16''; (15)7/32''x11/32''; (15)1/4''x3/8''; (157/323''x11/32''; (15)1/4'' x3/8''; (15)5/16''x7/16''; (10)3/8''x1/2''; (10)5/8''x3/4''; (10)1/2''x11/16''; (10)9/16''x3/4''; (10)5/8''x13/16''; (10) 11/16''x7/8''; (10)3/4'' x15/16''; (10) 3/4''x1''; (10)13/16''x1-1/16''