3.5MM CS X 29.2MM ID BLACK BUNA 70D

H3.5X29.2 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied 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). In service, this o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces. The catalog record notes: Metric O-RING, JIS P29.5.

Buna-N (Nitrile) offers reliable performance in both static and dynamic service, low compression set under sustained load. This material stands up to propane and butane, hydraulic fluids, and greases and lubricants. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Applications involving polar solvents or ketones call for a different compound.

Maintenance and OEM teams specify it across automotive, hydraulic and pneumatic systems, and general industrial maintenance.

This item is sold individually under part number H3.5X29.2. Unit weight is approximately 1.1991 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. For a size or compound outside the standard catalog, APG can quote from a print or sample.