5.7MM CS X 499.3MM ID BLACK BUNA 70D

H5.7X499.3 is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 499.3 mm (19.657 in), a cross section of 5.7 mm (0.224 in), and an outside diameter of 510.7 mm (20.11 in). In service, this o-ring remains the most cost-effective sealing element available for pressurized assemblies. Additional detail on this item: Metric O-RING, JIS G500.

As a material, Buna-N (Nitrile) offers an economical choice for high-volume maintenance programs and low compression set under sustained load. This material stands up to propane and butane, many alcohols, and water. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with ketones or ozone and direct sunlight.

Maintenance and OEM teams specify it across general industrial maintenance, agricultural equipment, and construction equipment.

H5.7X499.3 ships individually. Review your operating media and conditions against this specification before installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.