3.5MM CS X 69MM ID BLACK BUNA 70D

Ordered as H3.5X69, this is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 69 mm (2.717 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 76 mm (2.99 in). The o-ring remains the most cost-effective sealing element available for pressurized assemblies.

Buna-N (Nitrile) is valued for reliable performance in both static and dynamic service, low compression set under sustained load. It resists petroleum-based oils, water, and propane and butane. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in ketones or strong acids.

Maintenance and OEM teams specify it across general industrial maintenance, construction equipment, and automotive.

Order part number H3.5X69, sold individually. Unit weight is approximately 2.676 g. Check the compound against your process media, pressure and temperature before committing to a design. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.