RS PRO

Seals & O-Rings

Seals and O-rings are used to join two parts of a machine, engine or other mechanical assembly by filling the space between both parts, creating a filled and seal space in between. This seal prevents particle, vapour and fluid leakage to protect and maintain pressure whilst keeps debris out, ensuring proper function and safety. Seals and O-rings are used in various fields and industries including automotive, aerospace and general engineering.

How do seals and O-rings work?
A seal or O-ring is seated in a groove in one of the two parts to be joined then compressed between these two components to the corresponding groove creating a securely sealed joint. They can be used in dynamic joints where there is movement as well as in static or fixed applications.

Types of seals and O-rings
Seals and O-rings come in various materials suited to different purposes. Some have a high temperature tolerance for use in both hot and cold applications, while others are made to be chemically resistant for use in lab or test equipment. Available in a wide range of sizes both in single size packs or in seal and O-ring kits for general maintenance or when looking after a range of sealed part to ensure the correct size is available.

Seals and O-rings are typically made of elastomers like nitrile rubber and silicone, but they also come in plastics, metals and other materials. This variety of material allows for specific seal and O-rings to be used to ensure the best fitting and most reliable seal.

Sizes vary between seal and ring types both in diameter and thickness, these variations help provide an exact and precise seal to protect the joint. Both Metric and Imperial sizes are available to replace new and old seals and rings whether maintaining modern parts or older machines, engines and other mechanical parts.
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Part Details Brand Stock Inside Diameter Outside Diameter Thickness Type Material Minimum Operating Temperature Maximum Operating Temperature
RS PRO Nitrile Rubber O-Ring, 1/8in Bore , 1/4in O.D , -30 → +120°C RS Pro 33000 1/8in 1/4in 1/16in O-Ring Seal Nitrile Rubber -30°C +120°C
RS PRO Nitrile Rubber O-Ring, 5/16in Bore , 7/16in O.D , -30 → +120°C RS Pro 26450 5/16in 7/16in 1/16in O-Ring Seal Nitrile Rubber -30°C +120°C
RS PRO Nitrile Rubber O-Ring, 6.1mm Bore , 9.3mm O.D , -30 → +120°C RS Pro 24950 6.1mm 9.3mm 1.6mm O-Ring Seal Nitrile Rubber -30°C +120°C
RS PRO Nitrile Rubber O-Ring, 11.6mm Bore , 16.4mm O.D , -30 → +120°C RS Pro 24750 11.6mm 16.4mm 2.4mm O-Ring Seal Nitrile Rubber -30°C +120°C
BS0041 nitrile O-ring,4.1mm ID RS Pro 18100 4.1mm 7.3mm 1.6mm O-Ring Seal Nitrile Rubber -30°C +120°C
RS PRO Nitrile Rubber O-Ring, 8.1mm Bore , 11.3mm O.D , -30 → +120°C RS Pro 16100 8.1mm 11.3mm 1.6mm O-Ring Seal Nitrile Rubber -30°C +120°C
RS PRO Nitrile Rubber O-Ring, 3/16in Bore , 5/16in O.D , -30 → +120°C RS Pro 15500 3/16in 5/16in 1/16in O-Ring Seal Nitrile Rubber -30°C +120°C
RS PRO Silicone O-Ring, 2.9mm Bore , 1/4in O.D , -60 → +200°C RS Pro 14350 2.9mm 1/4in 1.78mm O-Ring Seal Silicone -60°C +200°C
RS PRO Nitrile Rubber O-Ring, 9.6mm Bore , 14.4mm O.D , -30 → +120°C RS Pro 13100 9.6mm 14.4mm 2.4mm O-Ring Seal Nitrile Rubber -30°C +120°C
BS008 Viton(TM) O-ring,3/16in ID RS Pro 11950 4.47mm 7.93mm 1.78mm O-Ring Seal Fluorocarbon Elastomer -20°C +200°C
RS PRO Fluorocarbon Elastomer O-Ring, 2.9mm Bore , 6.35mm O.D , -20 → +200°C RS Pro 11750 2.9mm 6.35mm 1.78mm O-Ring Seal Fluorocarbon Elastomer -20°C +200°C
RS PRO Fluorocarbon Elastomer O-Ring, 9.25mm Bore , 12.7mm O.D , -20 → +200°C RS Pro 11300 9.25mm 12.7mm 1.78mm O-Ring Seal Fluorocarbon Elastomer -20°C +200°C
BS0056 nitrile O-ring,5.6mm ID RS Pro 11000 5.6mm 10.4mm 2.4mm O-Ring Seal Nitrile Rubber -30°C +120°C
RS PRO Nitrile Rubber O-Ring, 5/32in Bore , 9/32in O.D , -30 → +120°C RS Pro 10150 5/32in 9/32in 1/16in O-Ring Seal Nitrile Rubber -30°C +120°C
RS PRO Silicone O-Ring, 4.47mm Bore , 5/16in O.D , -60 → +200°C RS Pro 9800 4.47mm 5/16in 1.78mm O-Ring Seal Silicone -60°C +200°C
RS PRO Nitrile Rubber O-Ring, 14.1mm Bore , 17.3mm O.D , -30 → +120°C RS Pro 9700 14.1mm 17.3mm 1.6mm O-Ring Seal Nitrile Rubber -30°C +120°C
RS PRO Nitrile Rubber O-Ring, 19.5mm Bore , 25.5mm O.D , -30 → +120°C RS Pro 9650 19.5mm 25.5mm 3mm O-Ring Seal Nitrile Rubber -30°C +120°C
RS PRO Nitrile Rubber O-Ring, 1/2in Bore , 11/16in O.D , -30 → +120°C RS Pro 9250 1/2in 11/16in 3/32in O-Ring Seal Nitrile Rubber -30°C +120°C
RS PRO Nitrile Rubber Seal, 10.37mm Bore , 15.88mm O.D , -10 → +80°C RS Pro 9250 10.37mm 15.88mm 2.03mm Bonded Seal Nitrile Rubber -10°C +80°C
RS PRO Fluorocarbon Elastomer O-Ring, 5.28mm Bore , 8.73mm O.D , -20 → +200°C RS Pro 8800 5.28mm 8.73mm 1.78mm O-Ring Seal Fluorocarbon Elastomer -20°C +200°C
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