O-ring Packing in NBR, AS568 Standard, 2.62 mm Thickness | GMORS

The NBR (Nitrile Butadiene Rubber) O-ring AS568 Standard from GMORS (Taiwan) is a robust and reliable sealing solution for industrial applications requiring compatibility with oils, fuels, lubricants, and hydraulic fluids. With a cross-sectional thickness of 2.62 mm and available in 8 Dash numbers AS568 (119 to 135), it covers inside diameters from 23.47 mm to 48.90 mm. Manufactured under the AS568 standard (American O-ring standard), it ensures interchangeability and dimensional compatibility with equipment and components designed to this standard. Manufacturer: GMORS (Taiwan).

Available Dimensions by AS568 Dash Number

• Dash 119: 2.62 mm thickness × 23.47 mm inside diameter
• Dash 120: 2.62 mm thickness × 25.07 mm inside diameter
• Dash 121: 2.62 mm thickness × 26.64 mm inside diameter
• Dash 123: 2.62 mm thickness × 29.82 mm inside diameter
• Dash 124: 2.62 mm thickness × 31.42 mm inside diameter
• Dash 125: 2.62 mm thickness × 32.99 mm inside diameter
• Dash 127: 2.62 mm thickness × 36.17 mm inside diameter
• Dash 135: 2.62 mm thickness × 48.90 mm inside diameter

Applications

• Hydraulic and pneumatic systems: sealing pistons, rods, caps, and connectors in cylinders and actuators
• Industrial pumps and valves: sealing shafts, caps, and bodies in oil, water, and process fluid pumps
• Automotive and machinery industry: sealing in engines, gearboxes, brake systems, and hydraulic power steering
• Oil and chemical industry: sealing in process equipment with mineral oils, fuels, and lubricants
• Refrigeration and air conditioning equipment: sealing in compressors and valves with NBR-compatible refrigerants
• General industrial maintenance: replacement of worn O-rings in equipment with AS568 specification

Technical Specifications

• Material: NBR (Nitrile Butadiene Rubber)
• Standard: AS568 (American O-ring standard)
• Cross-sectional thickness: 2.62 mm
• Available Dash numbers: 119, 120, 121, 123, 124, 125, 127, 135
• Inside diameters: 23.47 mm to 48.90 mm (depending on selected Dash)
• Temperature range: -30 °C to +100 °C (peaks up to +120 °C)
• Chemical resistance: Mineral oils, fuels, lubricants, water, and non-polar solvents
• Unit of sale: Unit
• Country of origin: Taiwan
• Manufacturer: GMORS

Chemical Compatibility of NBR Material

NBR is compatible with mineral oils, greases, fuels, lubricants, water, and non-polar solvents. It is not compatible with concentrated acids, ketones, esters, ozone, steam, or glycol-based brake fluids. For applications with steam, hot water, or alkaline fluids, consider EPDM O-rings. For applications with high temperatures or aggressive chemical fluids, consider FKM/Viton.

Other Common Names

This component is also known as: O-ring NBR AS568, nitrile o-ring AS568 2.62mm, NBR toric packing American standard, O-ring GMORS NBR Honduras, NBR toroidal seal AS568 Dash 119 120 121 123 124 125 127 135, NBR O-ring 2.62mm cross section, NBR AS568 hydraulic packing Honduras, industrial NBR o-ring AS568 standard Taiwan.