Ordered as H6X156, this is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 156 mm (6.142 in), a cross section of 6 mm (0.236 in), and an outside diameter of 168 mm (6.61 in). The o-ring delivers dependable bidirectional sealing in a compact groove envelope.
Buna-N (Nitrile) is specified here for strong abrasion and tear resistance, most widely specified general-purpose sealing elastomer. The material holds up against greases and lubricants, hydraulic fluids, and petroleum-based oils. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It should not be specified for service in ketones or ozone and direct sunlight.
Maintenance and OEM teams specify it across fluid power, construction equipment, and automotive.
H6X156 ships individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.
Description 6MM CS X 156MM ID BLACK BUNA 70D
Actual Outside Diameter 168 mm (6.61 inch)
Actual Cross Section 6 mm (0.236 inch)
Actual Inside Diameter 156 mm (6.142 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity