H2.5X17.5 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 17.5 mm (0.689 in), a cross section of 2.5 mm (0.098 in), and an outside diameter of 22.5 mm (0.89 in). In service, this o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.
Expect good resistance to hydraulic fluids, greases and lubricants, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for strong abrasion and tear resistance, the most widely specified general-purpose sealing elastomer. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C).
Common environments for this compound include automotive, construction equipment, and fluid power.
This item is sold individually under part number H2.5X17.5. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.
description 2.5MM CS X 17.5MM ID BLACK BUNA 70D
uf_description2 METRIC O-RING
Actual_OD 22.5 mm (0.89 inch)
Actual_CS 2.5 mm (0.098 inch)
Actual_ID 17.5 mm (0.689 inch)
ProductCode Description O-Rings - Metric - Commodity