The H2.5X165 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 165 mm (6.496 in), a cross section of 2.5 mm (0.098 in), and an outside diameter of 170 mm (6.69 in). This o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.
The compound resists hydraulic fluids, propane and butane, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) is specified for strong abrasion and tear resistance, the most widely specified general-purpose sealing elastomer. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Applications involving ozone and direct sunlight or strong acids call for a different compound.
It sees regular use in construction equipment, general industrial maintenance, and automotive.
Order part number H2.5X165, sold individually. Application requirements vary, so validate compatibility with your process conditions prior to installation. 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 165MM ID BLACK BUNA 70D
uf_description2 METRIC O-RING
Actual_OD 170 mm (6.69 inch)
Actual_CS 2.5 mm (0.098 inch)
Actual_ID 165 mm (6.496 inch)
ProductCode Description O-Rings - Metric - Commodity