3.5MM CS X 22.1MM ID BLACK BUNA 70D

H3.5X22.1 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 22.1 mm (0.87 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 29.1 mm (1.15 in). In service, this o-ring compresses into its gland to block fluid or gas migration across a joint. The catalog record notes: Metric O-RING, JIS P22.4.

The material holds up against hydraulic fluids, petroleum-based oils, and water. Buna-N (Nitrile) is widely chosen for low compression set under sustained load, strong abrasion and tear resistance. 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 ketones are present.

You will find this material specified across agricultural equipment, automotive, and fluid power.

This item is sold individually under part number H3.5X22.1. Unit weight is approximately 0.9658 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.