APG stocks the H3.5X33.7, a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 33.7 mm (1.327 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 40.7 mm (1.6 in). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware. Supplementary detail from the product record: Metric O-RING, JIS P34.
It resists many alcohols, water, and petroleum-based oils. Buna-N (Nitrile) delivers low compression set under sustained load and an economical choice for high-volume maintenance programs. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Applications involving ketones or polar solvents call for a different compound.
Common environments for this compound include hydraulic and pneumatic systems, automotive, and construction equipment.
Reference part number H3.5X33.7 when ordering; the item is sold individually. Unit weight is approximately 1.386 g. Review your operating media and conditions against this specification before installation.
Description 3.5MM CS X 33.7MM ID BLACK BUNA 70D
Actual Outside Diameter 40.7 mm (1.6 inch)
Actual Cross Section 3.5 mm (0.138 inch)
Actual Inside Diameter 33.7 mm (1.327 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity