3.5MM CS X 40.7MM ID BLACK BUNA 90D

H90M3.5X40.7 is a black Buna-N (Nitrile) 90 Shore A O-Ring measuring an inside diameter of 40.7 mm (1.602 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 47.7 mm (1.88 in). In service, this o-ring delivers dependable bidirectional sealing in a compact groove envelope. This item is further identified as Metric O-RING, JIS P41.

It resists petroleum-based oils, many alcohols, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for the most widely specified general-purpose sealing elastomer, strong abrasion and tear resistance. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C).

Common environments for this compound include construction equipment, fluid power, and general industrial maintenance.

Stocked as H90M3.5X40.7 and sold individually. Check the compound against your process media, pressure and temperature before committing to a design. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.