This o-ring is supplied in black Buna-N (Nitrile) 90 Shore A with an inside diameter of 6.5 mm (0.256 in), a cross section of 1 mm (0.039 in), and an outside diameter of 8.5 mm (0.33 in), catalogued under part number H90M1X6.5. It creates a positive seal at flange, piston and rod interfaces without added hardware.
This material stands up to water, propane and butane, and hydraulic fluids. Buna-N (Nitrile) is widely chosen for strong abrasion and tear resistance, low compression set under sustained load. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It is not the right choice where strong acids or ozone and direct sunlight are present.
Maintenance and OEM teams specify it across fluid power, automotive, and hydraulic and pneumatic systems.
This item is sold individually under part number H90M1X6.5. Unit weight is approximately 0.026 g. Check the compound against your process media, pressure and temperature before committing to a design. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.
description 1MM CS X 6.5MM ID BLACK BUNA 90D
uf_description2 METRIC O-RING
Actual_OD 8.5 mm (0.33 inch)
Actual_CS 1 mm (0.039 inch)
Actual_ID 6.5 mm (0.256 inch)
ProductCode Description O-Rings - Metric - Commodity