Ordered as H7X58, this is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 58 mm (2.283 in), a cross section of 7 mm (0.276 in), and an outside diameter of 72 mm (2.83 in). The o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.
Buna-N (Nitrile) is valued for strong abrasion and tear resistance, low compression set under sustained load. This material stands up to greases and lubricants, many alcohols, and water. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in polar solvents or ozone and direct sunlight.
You will find this material specified across automotive, fluid power, and construction equipment.
H7X58 ships individually. Unit weight is approximately 9.6 g. Check the compound against your process media, pressure and temperature before committing to a design.
Description 7MM CS X 58MM ID BLACK BUNA 70D
Actual Outside Diameter 72 mm (2.83 inch)
Actual Cross Section 7 mm (0.276 inch)
Actual Inside Diameter 58 mm (2.283 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity