Part number H3X5.5 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 5.5 mm (0.217 in), a cross section of 3 mm (0.118 in), and an outside diameter of 11.5 mm (0.45 in). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.
Buna-N (Nitrile) is specified here for strong abrasion and tear resistance, economical choice for high-volume maintenance programs. The material holds up against many alcohols, hydraulic fluids, and petroleum-based oils. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Applications involving ozone and direct sunlight or strong acids call for a different compound.
You will find this material specified across agricultural equipment, construction equipment, and hydraulic and pneumatic systems.
Order part number H3X5.5, sold individually. Unit weight is approximately 0.0003 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.
description 3MM CS X 5.5MM ID BLACK BUNA 70D
uf_description2 METRIC O-RING
Actual_OD 11.5 mm (0.45 inch)
Actual_CS 3 mm (0.118 inch)
Actual_ID 5.5 mm (0.217 inch)
ProductCode Description O-Rings - Metric - Commodity