The H7X250 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 250 mm (9.843 in), a cross section of 7 mm (0.276 in), and an outside diameter of 264 mm (10.39 in). This o-ring compresses into its gland to block fluid or gas migration across a joint.
This material stands up to greases and lubricants, water, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) is known 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.
Typical settings include automotive, agricultural equipment, and fluid power.
Order part number H7X250, sold individually. Unit weight is approximately 37.78 g. Check the compound against your process media, pressure and temperature before committing to a design.
Description 7MM CS X 250MM ID BLACK BUNA 70D
Actual Outside Diameter 264 mm (10.39 inch)
Actual Cross Section 7 mm (0.276 inch)
Actual Inside Diameter 250 mm (9.843 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity