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. 521-5752
BrandRS PRO
HK$348.92
Each
units
- 25.4mm - O-Ring Seal Carbon Steel, Stainless Steel - -
RS Stock No. 245-9612
BrandRS PRO
HK$1,013.92
1 Kit
Kit(s)
- - - Metric O-Ring Splicing Kit Viton® - -
RS Stock No. 689-574
BrandRS PRO
HK$23.02
1 Bag of 50
Bag(s)
1/8in 1/4in 1/16in O-Ring Seal Nitrile Rubber -30°C +120°C
RS Stock No. 689-552
BrandRS PRO
HK$124.74
1 Bag of 50
Bag(s)
18.7mm 26mm 1.5mm Bonded Seal Nitrile Rubber -10°C +80°C
RS Stock No. 128-899
BrandRS PRO
HK$36.62
1 Bag of 50
Bag(s)
9.6mm 14.4mm 2.4mm O-Ring Seal Nitrile Rubber -30°C +120°C
RS Stock No. 689-473
BrandRS PRO
HK$100.98
1 Bag of 50
Bag(s)
13.74mm 20.57mm 2.03mm Bonded Seal Nitrile Rubber -10°C +80°C
RS Stock No. 129-038
BrandRS PRO
HK$52.24
1 Bag of 50
Bag(s)
7.65mm 11.11mm 1.78mm O-Ring Seal Fluorocarbon Elastomer -20°C +200°C
RS Stock No. 749-610
BrandRS PRO
HK$4.435
Each (In a Pack of 4)
units
14mm 21.5 → 23.5mm 5.5mm V-Ring Seal Nitrile Rubber -40°C +100°C
RS Stock No. 308-1030
Mfr. Part No.SP-253504/SEAL
BrandSKF
HK$55.36
Each
units
25mm 35mm 4mm Shaft Seal Nitrile Rubber -40°C +80°C
RS Stock No. 128-940
BrandRS PRO
HK$50.92
1 Bag of 50
Bag(s)
26.5mm 32.5mm 3mm O-Ring Seal Nitrile Rubber -30°C +120°C
RS Stock No. 129-022
BrandRS PRO
HK$43.86
1 Bag of 50
Bag(s)
6.07mm 9.52mm 1.78mm O-Ring Seal Fluorocarbon Elastomer -20°C +200°C
RS Stock No. 129-016
BrandRS PRO
HK$50.57
1 Bag of 50
Bag(s)
5.28mm 8.73mm 1.78mm O-Ring Seal Fluorocarbon Elastomer -20°C +200°C
RS Stock No. 689-697
BrandRS PRO
HK$42.49
1 Bag of 50
Bag(s)
11/16in 7/8in 3/32in O-Ring Seal Nitrile Rubber -30°C +120°C
RS Stock No. 128-934
BrandRS PRO
HK$40.86
1 Bag of 50
Bag(s)
24.5mm 30.5mm 3mm O-Ring Seal Nitrile Rubber -30°C +120°C
RS Stock No. 689-518
BrandRS PRO
HK$268.97
1 Bag of 50
Bag(s)
33.89mm 42.8mm 2.5mm Bonded Seal Nitrile Rubber -10°C +80°C
RS Stock No. 295-2442
Mfr. Part No.772016
BrandPaulstra
HK$143.17
1 Bag of 2
Bag(s)
60mm 80mm 8mm Shaft Seal Nitrile Rubber -30°C +110°C
RS Stock No. 527-9762
BrandRS PRO
HK$48.48
1 Bag of 50
Bag(s)
4.47mm 5/16in 1.78mm O-Ring Seal Silicone -60°C +200°C
RS Stock No. 689-495
BrandRS PRO
HK$107.20
1 Bag of 50
Bag(s)
21.54mm 28.58mm 2.5mm Bonded Seal Nitrile Rubber -10°C +80°C
RS Stock No. 128-805
BrandRS PRO
HK$26.50
1 Bag of 50
Bag(s)
4.1mm 7.3mm 1.6mm O-Ring Seal Nitrile Rubber -30°C +120°C
RS Stock No. 128-912
BrandRS PRO
HK$48.99
1 Bag of 50
Bag(s)
14.6mm 19.4mm 2.4mm O-Ring Seal Nitrile Rubber -30°C +120°C
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