3MM CS X 5MM ID BLACK BUNA 70D

Part number H3X5 is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 5 mm (0.197 in), a cross section of 3 mm (0.118 in), and an outside diameter of 11 mm (0.43 in). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

This material stands up to water, many alcohols, and petroleum-based oils. Buna-N (Nitrile) delivers the most widely specified general-purpose sealing elastomer and low compression set under sustained load. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Exposure to ozone and direct sunlight or automotive brake fluid will shorten service life.

Maintenance and OEM teams specify it across agricultural equipment, general industrial maintenance, and fluid power.

Order part number H3X5, sold individually. Unit weight is approximately 0.22 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.