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. 196-4868
BrandRS PRO
SGD4.43
1 Bag of 50
Bag(s)
11mm 15mm 2mm O-Ring Nitrile Rubber -30°C +90°C
RS Stock No. 196-4979
BrandRS PRO
SGD7.77
1 Bag of 50
Bag(s)
20mm 25mm 2.5mm O-Ring Nitrile Rubber -30°C +90°C
RS Stock No. 196-5727
BrandRS PRO
SGD12.73
1 Bag of 10
Bag(s)
33mm 37mm 2mm O-Ring FKM -15°C +200°C
RS Stock No. 796-0833
Mfr. Part No.SOFM0030001500004071B
BrandKlinger
SGD26.46
1 Bag of 10
Bag(s)
48mm 133mm 1.5mm Full Face C4400 -100°C +250°C
RS Stock No. 196-5366
BrandRS PRO
SGD9.65
1 Bag of 50
Bag(s)
3mm 4.36mm 0.68mm O-Ring Nitrile Rubber -30°C +90°C
RS Stock No. 196-5367
BrandRS PRO
SGD13.92
1 Bag of 50
Bag(s)
7.2mm 8.7mm 0.75mm O-Ring Nitrile Rubber -30°C +90°C
RS Stock No. 196-4823
BrandRS PRO
SGD14.79
1 Bag of 25
Bag(s)
27.94mm 38.6mm 5.33mm O-Ring Nitrile Rubber -30°C +90°C
RS Stock No. 527-9807
BrandRS PRO
SGD13.68
1 Bag of 50
Bag(s)
9.25mm 1/2in 1.78mm O-Ring Seal Silicone -60°C +200°C
RS Stock No. 196-5806
BrandRS PRO
SGD10.43
1 Bag of 25
Bag(s)
6mm 12mm 3mm O-Ring FKM -15°C +200°C
RS Stock No. 196-4950
BrandRS PRO
SGD8.56
1 Bag of 50
Bag(s)
25mm 29.8mm 2.4mm O-Ring Nitrile Rubber -30°C +90°C
RS Stock No. 196-6056
BrandRS PRO
SGD29.86
1 Bag of 5
Bag(s)
69.22mm 79.88mm 5.33mm O-Ring FKM -15°C +200°C
RS Stock No. 196-5787
BrandRS PRO
SGD17.23
1 Bag of 25
Bag(s)
20mm 25mm 2.5mm O-Ring FKM -15°C +200°C
RS Stock No. 196-5916
BrandRS PRO
SGD14.05
1 Bag of 50
Bag(s)
8.73mm 12.29mm 1.78mm O-Ring FKM -15°C +200°C
RS Stock No. 129-088
BrandRS PRO
SGD23.59
1 Bag of 50
Bag(s)
13.94mm 19.05mm 2.62mm O-Ring Seal Fluorocarbon Elastomer -20°C +200°C
RS Stock No. 196-4944
BrandRS PRO
SGD5.93
1 Bag of 50
Bag(s)
4.6mm 9.2mm 2.3mm O-Ring Nitrile Rubber -30°C +90°C
RS Stock No. 196-5887
BrandRS PRO
SGD29.43
1 Bag of 25
Bag(s)
18mm 25mm 3.5mm O-Ring FKM -15°C +200°C
RS Stock No. 196-4845
BrandRS PRO
SGD5.02
1 Bag of 50
Bag(s)
6.4mm 10.2mm 1.9mm O-Ring Nitrile Rubber -30°C +90°C
RS Stock No. 196-5798
BrandRS PRO
SGD11.59
1 Bag of 10
Bag(s)
30mm 35mm 2.5mm O-Ring FKM -15°C +200°C
RS Stock No. 196-5050
BrandRS PRO
SGD14.02
1 Bag of 50
Bag(s)
40mm 46mm 3mm O-Ring Nitrile Rubber -30°C +90°C
RS Stock No. 196-6003
BrandRS PRO
SGD13.12
1 Bag of 10
Bag(s)
26.57mm 33.63mm 3.53mm O-Ring FKM -15°C +200°C