H90210 is an AS568-210 black Buna-N (Nitrile) 90 Shore A O-Ring measuring an inside diameter of 0.734 in (18.64 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 1.012 in (25.7 mm). In service, this o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.
The compound resists propane and butane, greases and lubricants, and petroleum-based oils. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for strong abrasion and tear resistance, low compression set under sustained load. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Verify compatibility before use with ozone and direct sunlight or ketones.
Common environments for this compound include construction equipment, general industrial maintenance, and fluid power.
H90210 ships individually. Unit weight is approximately 0.891 g. Check the compound against your process media, pressure and temperature before committing to a design.
Description -210 BLACK BUNA 90D O-RING
Actual Cross Section 0.139 inch (3.53 mm)
Actual Inside Diameter 0.734 inch (18.64 mm)
Actual Outside Diameter 1.012 inch (25.7 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity