3.5MM CS X 29.7MM ID BLACK BUNA 90D

The H90M3.5X29.7 is a black Buna-N (Nitrile) 90 Shore A O-Ring with an inside diameter of 29.7 mm (1.169 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 36.7 mm (1.44 in). This o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load. Supplementary detail from the product record: Metric O-RING, JIS P30.

As a material, Buna-N (Nitrile) is valued for reliable performance in both static and dynamic service, low compression set under sustained load. The compound resists petroleum-based oils, many alcohols, and propane and butane. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Applications involving polar solvents or strong acids call for a different compound.

It sees regular use in hydraulic and pneumatic systems, construction equipment, and automotive.

This item is sold individually under part number H90M3.5X29.7. Unit weight is approximately 1.4108 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.