The H3X104.5 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 104.5 mm (4.114 in), a cross section of 3 mm (0.118 in), and an outside diameter of 110.5 mm (4.35 in). This o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.
Expect good resistance to many alcohols, greases and lubricants, and water. That behavior comes from the compound itself: Buna-N (Nitrile) is widely chosen for an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Applications involving polar solvents or automotive brake fluid call for a different compound.
It sees regular use in fluid power, hydraulic and pneumatic systems, and general industrial maintenance.
Order part number H3X104.5, sold individually. Unit weight is approximately 2.987 g. Review your operating media and conditions against this specification before installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.
description 3MM CS X 104.5MM ID BLACK BUNA 70D
uf_description2 METRIC O-RING
Actual_OD 110.5 mm (4.35 inch)
Actual_CS 3 mm (0.118 inch)
Actual_ID 104.5 mm (4.114 inch)
ProductCode Description O-Rings - Metric - Commodity