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.

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. 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 part 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. 689-748
BrandRS PRO
€12.46
1 Bag of 50
Bag(s)
15/16in 1 3/16in 1/8in O-Ring Nitrile Rubber -30°C +120°C
RS Stock No. 527-9784
BrandRS PRO
€3.65
1 Bag of 50
Bag(s)
6.07mm 3/8in 1.78mm O-Ring Silicone -60°C +200°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
RS Stock No. 129-101
BrandRS PRO
€8.26
1 Bag of 50
Bag(s)
17.12mm 22.22mm 2.62mm O-Ring Fluorocarbon Elastomer -20°C +200°C
RS Stock No. 528-0015
BrandRS PRO
€27.34
1 Bag of 50
Bag(s)
36.09mm 1 11/16in 3.53mm O-Ring Silicone -60°C +200°C
RS Stock No. 129-072
BrandRS PRO
€14.63
1 Bag of 50
Bag(s)
12.37mm 17.46mm 2.62mm O-Ring Fluorocarbon Elastomer -20°C +200°C
RS Stock No. 475-316
Mfr. Part No.ORJ-12
BrandNylofix
€30.27
1 Pack of 100
Pack(s)
11.5mm 14.5mm 1.5mm O-Ring Nitrile Rubber -30°C +150°C
RS Stock No. 689-681
BrandRS PRO
€5.07
1 Bag of 50
Bag(s)
5/8in 13/16in 3/32in O-Ring Nitrile Rubber -30°C +120°C
RS Stock No. 527-9841
BrandRS PRO
€13.74
1 Bag of 50
Bag(s)
13.94mm 3/4in 2.62mm O-Ring Silicone -60°C +200°C
RS Stock No. 796-0754
Mfr. Part No.SOFQ0030001500008001A
BrandKlinger
€13.24
1 Bag of 10
Bag(s)
89mm 137mm 1.5mm Inside Bolt C4400 -100°C +250°C
RS Stock No. 689-596
BrandRS PRO
€0.52
1 Bag of 50
Bag(s)
3/16in 5/16in 1/16in O-Ring Nitrile Rubber -30°C +120°C
RS Stock No. 796-0748
Mfr. Part No.SOFQ0030001500002501A
BrandKlinger
€6.79
1 Bag of 10
Bag(s)
33mm 68mm 1.5mm Inside Bolt C4400 -100°C +250°C
RS Stock No. 129-022
BrandRS PRO
€6.82
1 Bag of 50
Bag(s)
6.07mm 9.52mm 1.78mm O-Ring Fluorocarbon Elastomer -20°C +200°C
RS Stock No. 689-675
BrandRS PRO
€4.68
1 Bag of 50
Bag(s)
9/16in 3/4in 3/32in O-Ring Nitrile Rubber -30°C +120°C
RS Stock No. 128-861
BrandRS PRO
€1.02
1 Bag of 50
Bag(s)
5.6mm 10.4mm 2.4mm O-Ring Nitrile Rubber -30°C +120°C
RS Stock No. 689-619
BrandRS PRO
€3.39
1 Bag of 50
Bag(s)
1/4in 3/8in 1/16in O-Ring Nitrile Rubber -30°C +120°C
RS Stock No. 689-704
BrandRS PRO
€7.21
1 Bag of 50
Bag(s)
3/4in 15/16in 3/32in O-Ring Nitrile Rubber -30°C +120°C
RS Stock No. 211-8822
BrandRS PRO
€8.73
1 Pack of 5
Pack(s)
15mm 24mm 7mm Shaft Seal Nitrile Rubber -40°C +100°C
RS Stock No. 796-0785
Mfr. Part No.SOFQ0030001500008001B
BrandKlinger
€24.40
1 Bag of 10
Bag(s)
89mm 191mm 1.5mm Full Face C4400 -100°C +250°C
RS Stock No. 796-0906
Mfr. Part No.SOFM0910003000005071A
BrandKlinger
€5.86
1 Bag of 10
Bag(s)
60.3mm 104.8mm 3mm RF Natural Rubber -25°C +80°C