3.5MM CS X 23.7MM ID BLACK BUNA 70D

APG stocks the H3.5X23.7, a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 23.7 mm (0.933 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 30.7 mm (1.21 in). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware. This item is further identified as Metric O-RING, JIS P24.

As a material, Buna-N (Nitrile) is known for the most widely specified general-purpose sealing elastomer, reliable performance in both static and dynamic service. It resists many alcohols, water, and petroleum-based oils. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Exposure to polar solvents or ozone and direct sunlight will shorten service life.

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

H3.5X23.7 ships individually. Unit weight is approximately 1.0112 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.