3.5MM CS X 34.7MM ID BLACK BUNA 70D

The H3.5X34.7 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 34.7 mm (1.366 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 41.7 mm (1.64 in). This o-ring creates a positive seal at flange, piston and rod interfaces without added hardware. The catalog record notes: Metric O-RING, JIS P35.

Buna-N (Nitrile) is specified here for low compression set under sustained load, strong abrasion and tear resistance. The material holds up against water, greases and lubricants, and hydraulic fluids. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in strong acids or ketones.

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

Stocked as H3.5X34.7 and sold individually. Unit weight is approximately 1.4625 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.