The H90258 is an AS568-258 black Buna-N (Nitrile) 90 Shore A O-Ring measuring an inside diameter of 5.984 in (151.99 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 6.262 in (159.05 mm). This o-ring delivers dependable bidirectional sealing in a compact groove envelope.
Buna-N (Nitrile) is specified here for most widely specified general-purpose sealing elastomer, strong abrasion and tear resistance. Expect good resistance to hydraulic fluids, greases and lubricants, and propane and butane. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It should not be specified for service in automotive brake fluid or polar solvents.
It sees regular use in agricultural equipment, automotive, and fluid power.
This item is sold individually under part number H90258. Unit weight is approximately 6.28 g and nominal inside diameter is listed as 6 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Description -258 BLACK BUNA 90D O-RING
Actual Cross Section 0.139 inch (3.53 mm)
Actual Inside Diameter 5.984 inch (151.99 mm)
Actual Outside Diameter 6.262 inch (159.05 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity