O-ring packing in NBR, Thickness 5.3 mm | Sealing Tech-G

The NBR (Nitrile Butadiene Rubber) O-ring with 5.33 mm (0.210") thickness from Sealing Tech-G is a precision O-ring manufactured under the AS568 dimensional standard (American SAE standard), where the 5.33 mm thickness corresponds to the cross-section of the AS568-200 series, the largest cross-section in the standard AS568. Its internal diameters in decimal measurements — 19.99 mm (0.787") and 23.17 mm (0.912") — are the exact dimensions of the AS568-200 series, ensuring direct compatibility with equipment and components designed under American high-pressure standards. The third available diameter of 100 mm complements the offering for larger diameter applications. The larger 5.33 mm cross-section provides greater compression, better extrusion resistance, and longer service life in high-pressure and high-temperature applications. Highly compatible with oils, fuels, lubricants, water, and numerous non-polar solvents.

Applications

• Direct replacement for O-rings in equipment designed under AS568-200 standard (larger cross-section series)
• High-pressure hydraulic systems with American standard components: cylinders, valves, and actuators
• Oil and gas industry: seals in high-pressure equipment, valves, and connections with SAE dimensions
• American heavy machinery: construction, mining, and agricultural equipment with AS568-200 seals
• High-performance American automotive: engine and transmission seals in USA-made vehicles
• High-pressure pumps and compressors with SAE specifications: cover, flange, and body seals
• High-pressure industrial instrumentation and control: seals in equipment with American standard
• Maintenance and repair of equipment imported from the USA and Canada with -200 series seals

Technical Specifications

• Material: NBR (Nitrile Butadiene Rubber, Nitrile Rubber)
• Seal thickness (CS): 5.33 mm (0.210")
• Dimensional standard: AS568 Series -200 / SAE (American standard)
• Available internal diameters: 19.99 mm (0.787") / 23.17 mm (0.912") / 100 mm
• Temperature range: -30 °C to +100 °C (peaks up to +120 °C)
• Chemical resistance: Mineral oils, fuels, lubricants, water, non-polar solvents
• Configuration: O-ring
• Sales unit: Unit
• Country of origin: Taiwan
• Brand: Sealing Tech-G

Chemical Compatibility

NBR is compatible with mineral oils, fuels, lubricants, water, and non-polar solvents. It is not compatible with concentrated acids, ketones, esters, ozone, or glycol-based brake fluids. For these applications, consider EPDM or VITON O-rings.

Other Common Names

This component is also known as: NBR o-ring 5.33 mm thickness, AS568-200 nitrile o-ring, SAE series 200 nitrile gasket, AS568 0.210 inch o-ring, NBR O-ring AS568 series 200, American standard high-pressure NBR O-ring, nitrile rubber O-ring AS568-200, American standard high-pressure o-ring gasket Honduras, 0.210 inch thickness nitrile o-ring.