3.5MM CS X 45.7MM ID BLACK BUNA 90D

Ordered as H90M3.5X45.7, this is a black Buna-N (Nitrile) 90 Shore A O-Ring supplied with an inside diameter of 45.7 mm (1.799 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 52.7 mm (2.07 in). The o-ring compresses into its gland to block fluid or gas migration across a joint. The catalog record notes: Metric O-RING, JIS P46.

Buna-N (Nitrile) is known for reliable performance in both static and dynamic service, the most widely specified general-purpose sealing elastomer. Expect good resistance to petroleum-based oils, hydraulic fluids, and greases and lubricants. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with ketones or strong acids.

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

H90M3.5X45.7 ships individually. Check the compound against your process media, pressure and temperature before committing to a design. For a size or compound outside the standard catalog, APG can quote from a print or sample.