3MM CS X 25MM ID BLACK BUNA 90D

APG stocks the H90M3X25, a black Buna-N (Nitrile) 90 Shore A O-Ring built to an inside diameter of 25 mm (0.984 in), a cross section of 3 mm (0.118 in), and an outside diameter of 31 mm (1.22 in). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

As a material, Buna-N (Nitrile) is specified for reliable performance in both static and dynamic service, the most widely specified general-purpose sealing elastomer. The material holds up against greases and lubricants, propane and butane, and water. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Applications involving ketones or strong acids call for a different compound.

Maintenance and OEM teams specify it across automotive, agricultural equipment, and construction equipment.

Order part number H90M3X25, sold individually. Unit weight is approximately 0.8791 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.