Ordered as H90226, this is an AS568-226 black Buna-N (Nitrile) 90 Shore A O-Ring built to an inside diameter of 1.984 in (50.39 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 2.262 in (57.45 mm). The o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.
Buna-N (Nitrile) is specified here for economical choice for high-volume maintenance programs and most widely specified general-purpose sealing elastomer. Expect good resistance to greases and lubricants, many alcohols, and water. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It is not the right choice where ketones or ozone and direct sunlight are present.
Maintenance and OEM teams specify it across fluid power, agricultural equipment, and automotive.
H90226 ships individually. Unit weight is approximately 2.189 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
Description -226 BLACK BUNA 90D O-RING
Actual Cross Section 0.139 inch (3.53 mm)
Actual Inside Diameter 1.984 inch (50.39 mm)
Actual Outside Diameter 2.262 inch (57.45 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity