ITEM NAME:72 mm x 65 mm x 3.5 mm Rubber seal Oil filter O-rings Seal ring 5 pcs A3C1 72 mm x 65 mm x 3.5 mm Rubber seal Oil filter O-rings Seal ring 5 pcs A3C1 Oil resistance, hydraulic fluid resistance and water repellent. Flexible black rubber O ring seal. Commonly used for mechanical sealing, pressure vessels, gas compressor, reaction vessels, heat exchangers, boilers, filters, automobiles, electrical appliances and other areas. Product Name: O Ring; Material: rubber External Diameter (approx.): 72mm / 2.83 inch Thickness (approx.): 3.5 mm / 0.137 inch Weight: 15g Color: Black Package Contents: 5 x rubber O ring Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/-1-3cm..Oil resistance, hydraulic fluid resistance and water repellent. Flexible black rubber O ring seal. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.