1.9MM CS X 6.8MM ID BLACK BUNA 70D

The H1.9X6.8 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 6.8 mm (0.268 in), a cross section of 1.9 mm (0.075 in), and an outside diameter of 10.6 mm (0.42 in). This o-ring remains the most cost-effective sealing element available for pressurized assemblies. Supplementary detail from the product record: Metric O-RING, JIS P7.

As a material, Buna-N (Nitrile) is valued for strong abrasion and tear resistance, the most widely specified general-purpose sealing elastomer. Expect good resistance to many alcohols, propane and butane, and greases and lubricants. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where ketones or polar solvents are present.

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

Reference part number H1.9X6.8 when ordering; the item is sold individually. Unit weight is approximately 0.0977 g. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.