Gaskets & O-Rings

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

RS Components supply a great range of gaskets and seals including nitrile O-rings which have a great resistance to abrasion and can be used for various sealing applications. Our nitrile O-rings are available in both metric and imperial standard sizes. Imperial sizes are usually to BS1806 and Metric sizes are to BS4518.

How do gaskets and O-rings work?

A gasket or O-ring is seated between two parts, often 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 gaskets and O-rings

Gaskets 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. They are available in a wide range of sizes both in single size packs or in kits for general maintenance or when looking after a range of sealed parts to ensure the correct size is available.

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

Sizes vary between 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 gaskets and o-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. 128-811
BrandRS PRO
€1.41
1 Bag of 50
Bag(s)
6.1mm 9.3mm 1.6mm O-Ring Nitrile Rubber -30°C +120°C
RS Stock No. 129-044
BrandRS PRO
€4.02
1 Bag of 50
Bag(s)
9.25mm 12.7mm 1.78mm O-Ring Fluorocarbon Elastomer -20°C +200°C
RS Stock No. 128-984
BrandRS PRO
€6.66
1 Bag of 50
Bag(s)
2.9mm 6.35mm 1.78mm O-Ring Fluorocarbon Elastomer -20°C +200°C
RS Stock No. 689-574
BrandRS PRO
€3.00
1 Bag of 50
Bag(s)
1/8in 1/4in 1/16in O-Ring Nitrile Rubber -30°C +120°C
RS Stock No. 521-5752
BrandRS PRO
€50.88
Each
units
- 25.4mm - O-Ring Carbon Steel, Stainless Steel - -
RS Stock No. 129-038
BrandRS PRO
€7.01
1 Bag of 50
Bag(s)
7.65mm 11.11mm 1.78mm O-Ring Fluorocarbon Elastomer -20°C +200°C
RS Stock No. 129-066
BrandRS PRO
€6.96
1 Bag of 50
Bag(s)
10.77mm 15.87mm 2.62mm O-Ring Fluorocarbon Elastomer -20°C +200°C
RS Stock No. 527-9807
BrandRS PRO
€8.91
1 Bag of 50
Bag(s)
9.25mm 1/2in 1.78mm O-Ring Silicone -60°C +200°C
RS Stock No. 527-9740
BrandRS PRO
€6.82
1 Bag of 50
Bag(s)
2.9mm 1/4in 1.78mm O-Ring Silicone -60°C +200°C
RS Stock No. 129-016
BrandRS PRO
€6.82
1 Bag of 50
Bag(s)
5.28mm 8.73mm 1.78mm O-Ring Fluorocarbon Elastomer -20°C +200°C
RS Stock No. 128-978
BrandRS PRO
€7.09
1 Bag of 50
Bag(s)
39.5mm 45.5mm 3mm O-Ring Nitrile Rubber -30°C +120°C
RS Stock No. 527-9778
BrandRS PRO
€2.25
1 Bag of 50
Bag(s)
5.28mm 11/32in 1.78mm O-Ring Silicone -60°C +200°C
RS Stock No. 527-9829
BrandRS PRO
€14.99
1 Bag of 50
Bag(s)
10.77mm 5/8in 2.62mm O-Ring Silicone -60°C +200°C
RS Stock No. 129-088
BrandRS PRO
€15.36
1 Bag of 50
Bag(s)
13.94mm 19.05mm 2.62mm O-Ring Fluorocarbon Elastomer -20°C +200°C
RS Stock No. 527-9756
BrandRS PRO
€7.11
1 Bag of 50
Bag(s)
3.68mm 9/32in 1.78mm O-Ring Silicone -60°C +200°C
RS Stock No. 128-805
BrandRS PRO
€3.81
1 Bag of 50
Bag(s)
4.1mm 7.3mm 1.6mm O-Ring Nitrile Rubber -30°C +120°C
RS Stock No. 527-9958
BrandRS PRO
€21.72
1 Bag of 50
Bag(s)
26.58mm 1 5/16in 3.53mm O-Ring Silicone -60°C +200°C
RS Stock No. 128-883
BrandRS PRO
€4.36
1 Bag of 50
Bag(s)
7.6mm 12.4mm 2.4mm O-Ring Nitrile Rubber -30°C +120°C
RS Stock No. 689-653
BrandRS PRO
€4.68
1 Bag of 50
Bag(s)
7/16in 5/8in 3/32in O-Ring Nitrile Rubber -30°C +120°C
RS Stock No. 129-000
BrandRS PRO
€6.66
1 Bag of 50
Bag(s)
4.47mm 7.93mm 1.78mm O-Ring Fluorocarbon Elastomer -20°C +200°C