APG stocks the H90203, an AS568-203 black Buna-N (Nitrile) 90 Shore A O-Ring built to an inside diameter of 0.296 in (7.52 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 0.574 in (14.58 mm). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.
As a material, Buna-N (Nitrile) is widely chosen for reliable performance in both static and dynamic service, the most widely specified general-purpose sealing elastomer. The compound resists many alcohols, greases and lubricants, and petroleum-based oils. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with ketones or ozone and direct sunlight.
It sees regular use in automotive, fluid power, and construction equipment.
H90203 ships individually. Unit weight is approximately 0.4591 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
Description -203 BLACK BUNA 90D O-RING
Actual Cross Section 0.139 inch (3.53 mm)
Actual Inside Diameter 0.296 inch (7.52 mm)
Actual Outside Diameter 0.574 inch (14.58 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity