3.5MM CS X 29.2MM ID BLACK BUNA 90D

Ordered as H90M3.5X29.2, this is a black Buna-N (Nitrile) 90 Shore A O-Ring with an inside diameter of 29.2 mm (1.15 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 36.2 mm (1.43 in). The o-ring remains the most cost-effective sealing element available for pressurized assemblies. The catalog record notes: Metric O-RING, JIS P29.5.

This material stands up to many alcohols, water, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) offers strong abrasion and tear resistance, reliable performance in both static and dynamic service. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with polar solvents or ozone and direct sunlight.

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

Reference part number H90M3.5X29.2 when ordering; the item is sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.