Ordered as H7X258, this is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 258 mm (10.157 in), a cross section of 7 mm (0.276 in), and an outside diameter of 272 mm (10.71 in). The o-ring delivers dependable bidirectional sealing in a compact groove envelope.
As a material, Buna-N (Nitrile) is specified for strong abrasion and tear resistance, reliable performance in both static and dynamic service. Expect good resistance to water, greases and lubricants, and many alcohols. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C).
It sees regular use in fluid power, automotive, and general industrial maintenance.
Stocked as H7X258 and sold individually. Unit weight is approximately 38.971 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.
description 7MM CS X 258MM ID BLACK BUNA 70D
uf_description2 METRIC O-RING
Actual_OD 272 mm (10.71 inch)
Actual_CS 7 mm (0.276 inch)
Actual_ID 258 mm (10.157 inch)
ProductCode Description O-Rings - Metric - Commodity