Part number H90M2X70 is a black Buna-N (Nitrile) 90 Shore A O-Ring built to an inside diameter of 70 mm (2.756 in), a cross section of 2 mm (0.079 in), and an outside diameter of 74 mm (2.91 in). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.
Buna-N (Nitrile) is specified here for strong abrasion and tear resistance, low compression set under sustained load. The compound resists propane and butane, many alcohols, and water. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Verify compatibility before use with ozone and direct sunlight or polar solvents.
You will find this material specified across hydraulic and pneumatic systems, automotive, and agricultural equipment.
Reference part number H90M2X70 when ordering; the item is sold individually. Unit weight is approximately 0.94 g. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
description 2MM CS X 70MM ID BLACK BUNA 90D
uf_description2 METRIC O-RING
Actual_OD 74 mm (2.91 inch)
Actual_CS 2 mm (0.079 inch)
Actual_ID 70 mm (2.756 inch)
ProductCode Description O-Rings - Metric - Commodity