APG stocks the H4X215, a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 215 mm (8.465 in), a cross section of 4 mm (0.157 in), and an outside diameter of 223 mm (8.78 in). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.
Buna-N (Nitrile) is specified for strong abrasion and tear resistance, low compression set under sustained load. It resists propane and butane, water, and many alcohols. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service.
You will find this material specified across hydraulic and pneumatic systems, fluid power, and construction equipment.
Order part number H4X215, sold individually. Review your operating media and conditions against this specification before installation.
Description 4MM CS X 215MM ID BLACK BUNA 70D
Actual Outside Diameter 223 mm (8.78 inch)
Actual Cross Section 4 mm (0.157 inch)
Actual Inside Diameter 215 mm (8.465 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity