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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Description Price Inside Diameter Outside Diameter Thickness Type Material Minimum Operating Temperature Maximum Operating Temperature
RS stock no. 255-3247
Mfr. Part No.722455
R 177.12
1 Bag of 2
Bag(s)
8mm 16mm 6.5mm Shaft Seal Nitrile Rubber -30°C +110°C
RS stock no. 475-209
Mfr. Part No.ORJ-17
BrandNylofix
R 7.413
Each (In a Pack of 100)
units
16mm 19.6mm 1.8mm O-Ring Seal Nitrile Rubber -30°C +150°C
RS stock no. 877-7727
Mfr. Part No.40411346
R 227.24
Each
units
50mm 72mm 10mm Shaft Seal 72 NBR 902 -40°C +100°C
RS stock no. 527-9762
BrandRS PRO
R 122.63
1 Bag of 50
Bag(s)
4.47mm 5/16in 1.78mm O-Ring Seal Silicone -60°C +200°C
RS stock no. 689-596
BrandRS PRO
R 51.59
1 Bag of 50
Bag(s)
3/16in 5/16in 1/16in O-Ring Seal Nitrile Rubber -30°C +120°C
RS stock no. 527-9784
BrandRS PRO
R 126.66
1 Bag of 50
Bag(s)
6.07mm 3/8in 1.78mm O-Ring Seal Silicone -60°C +200°C
RS stock no. 689-619
BrandRS PRO
R 54.29
1 Bag of 50
Bag(s)
1/4in 3/8in 1/16in O-Ring Seal Nitrile Rubber -30°C +120°C
RS stock no. 689-502
BrandRS PRO
R 409.68
1 Bag of 50
Bag(s)
27.05mm 34.93mm 2.5mm Bonded Seal Nitrile Rubber -10°C +80°C
RS stock no. 256-0352
Mfr. Part No.R900357573
R 523.56
Each
units
- - - - - - -
RS stock no. 521-5746
BrandRS PRO
R 828.14
Each
units
- 25.4mm - Mechanical Pump Seal Carbon Steel, Stainless Steel - -
RS stock no. 828-9135
Mfr. Part No.40413913
R 106.01
Each
units
8mm 22mm 7mm Shaft Seal 72 NBR 902 -40°C +100°C
RS stock no. 128-849
BrandRS PRO
R 73.20
1 Bag of 50
Bag(s)
12.1mm 15.3mm 1.6mm O-Ring Seal Nitrile Rubber -30°C +120°C
RS stock no. 749-682
BrandRS PRO
R 26.803
Each (In a Pack of 4)
units
40mm 53 → 58mm 9mm V-Ring Seal Nitrile Rubber -40°C +100°C
RS stock no. 689-530
BrandRS PRO
R 224.01
1 Bag of 50
Bag(s)
12.7mm 18mm 1.5mm Bonded Seal Nitrile Rubber -10°C +80°C
RS stock no. 900-3200
Mfr. Part No.8113302
BrandAltech
R 2.846
Each (In a Pack of 100)
units
- - - - - - -
RS stock no. 829-3689
Mfr. Part No.40413230
R 154.66
Each
units
25mm 47mm 7mm Shaft Seal 72 NBR 902 -40°C +100°C
RS stock no. 295-2357
Mfr. Part No.792777
R 191.96
1 Bag of 2
Bag(s)
55mm 68mm 8mm Shaft Seal Nitrile Rubber -30°C +110°C
RS stock no. 308-1046
Mfr. Part No.SP-304004/SEAL
BrandSKF
R 143.48
Each
units
30mm 40mm 4mm Shaft Seal Nitrile Rubber -40°C +80°C
RS stock no. 528-0021
BrandRS PRO
R 501.80
1 Bag of 50
Bag(s)
37.7mm 1-3/4in 3.53mm O-Ring Seal Silicone -60°C +200°C
RS stock no. 211-8850
BrandRS PRO
R 32.372
Each (In a Pack of 5)
units
15mm 35mm 7mm Shaft Seal Nitrile Rubber -40°C +100°C