O-ring Packing in NBR, AS568 Standard, Thickness of 5.33 mm | GMORS

The GMORS (Taiwan) NBR (Nitrile Butadiene Rubber) O-ring, AS568 Standard, 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 5.33 mm — the thickest section in the AS568 series, ideal for high-pressure applications and heavy-duty mechanical seals — available in Dash 323 (5.33 mm × 32.69 mm ID). Manufactured under the AS568 standard (American O-ring standard), it guarantees interchangeability and dimensional compatibility with equipment and components designed to this standard. Manufacturer: GMORS (Taiwan).

Dimensions Available by AS568 Dash Number

• Dash 323: 5.33 mm thickness × 32.69 mm ID

Applications

• High-pressure hydraulic systems: sealing of pistons, rods, and end caps in high-load cylinders and actuators
• High-pressure industrial pumps and valves: sealing of shafts, covers, and bodies where greater mechanical strength is required
• Oil and chemical industry: sealing in process equipment with mineral oils, fuels, and lubricants under pressure
• Heavy machinery and construction equipment: sealing in high-demand hydraulic systems
• Refrigeration and compressor equipment: sealing in compressors and valves with NBR-compatible refrigerants
• General industrial maintenance: replacement of worn O-rings in equipment with AS568 Dash 323 specification

Technical Specifications

• Material: NBR (Nitrile Butadiene Rubber)
• Standard: AS568 (American O-ring standard)
• Cross-sectional thickness: 5.33 mm
• Dash Number: 323
• Inner diameter: 32.69 mm
• 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 Dash 323, nitrile o-ring AS568 5.33mm, thick section NBR toroidal gasket, GMORS NBR O-ring Honduras, NBR AS568 323 toroidal seal, NBR O-ring 5.33mm cross section, high-pressure hydraulic gasket NBR AS568 Honduras, industrial NBR o-ring 5.33mm Taiwan.