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. 196-5452
BrandRS PRO
SGD6.81
1 Bag of 50
Bag(s)
3.4mm 6mm 1.3mm O-Ring Nitrile Rubber -30°C +90°C
RS Stock No. 196-5202
BrandRS PRO
SGD15.30
1 Bag of 20
Bag(s)
50mm 62mm 6mm O-Ring Nitrile Rubber -30°C +90°C
RS Stock No. 196-6015
BrandRS PRO
SGD13.42
1 Bag of 5
Bag(s)
53.57mm 60.63mm 3.53mm O-Ring FKM -15°C +200°C
RS Stock No. 196-5822
BrandRS PRO
SGD21.09
1 Bag of 25
Bag(s)
19.5mm 25.5mm 3mm O-Ring Nitrile Rubber -30°C +90°C
RS Stock No. 204-0991
Mfr. Part No.119151
SGD2.89
1 Bag of 10
Bag(s)
19.8mm 27mm 3.6mm O-Ring Ethylene Propylene Rubber -50°C +140°C
RS Stock No. 204-0958
Mfr. Part No.112676
SGD8.71
1 Bag of 10
Bag(s)
12.1mm 17.5mm 2.7mm O-Ring Fluorocarbon Elastomer -25°C +200°C
RS Stock No. 196-5701
BrandRS PRO
SGD9.34
1 Bag of 25
Bag(s)
9mm 13mm 2mm O-Ring FKM -15°C +200°C
RS Stock No. 196-5845
BrandRS PRO
SGD19.00
1 Bag of 10
Bag(s)
42mm 48mm 3mm O-Ring Nitrile Rubber -30°C +90°C
RS Stock No. 196-5433
BrandRS PRO
SGD4.27
1 Bag of 50
Bag(s)
40mm 42mm 1mm O-Ring Nitrile Rubber -30°C +90°C
RS Stock No. 196-5818
BrandRS PRO
SGD16.01
1 Bag of 25
Bag(s)
16mm 22mm 3mm O-Ring Nitrile Rubber -30°C +90°C
RS Stock No. 196-5952
BrandRS PRO
SGD29.43
1 Bag of 50
Bag(s)
17.86mm 23.1mm 2.62mm O-Ring FKM -15°C +200°C
RS Stock No. 196-5923
BrandRS PRO
SGD20.89
1 Bag of 50
Bag(s)
17.17mm 20.73mm 1.78mm O-Ring FKM -15°C +200°C
RS Stock No. 196-5549
BrandRS PRO
SGD4.19
1 Bag of 50
Bag(s)
22.1mm 25.3mm 1.6mm O-Ring Nitrile Rubber -30°C +90°C
RS Stock No. 196-5429
BrandRS PRO
SGD9.07
1 Bag of 50
Bag(s)
35mm 37mm 1mm O-Ring Nitrile Rubber -30°C +90°C
RS Stock No. 196-5465
BrandRS PRO
SGD4.40
1 Bag of 50
Bag(s)
4.5mm 7.5mm 1.5mm O-Ring Nitrile Rubber -30°C +90°C
RS Stock No. 196-5866
BrandRS PRO
SGD20.20
1 Bag of 5
Bag(s)
80mm 86mm 3mm O-Ring Nitrile Rubber -30°C +90°C
RS Stock No. 196-5133
BrandRS PRO
SGD5.04
1 Bag of 20
Bag(s)
67mm 75mm 4mm O-Ring Nitrile Rubber -30°C +90°C
RS Stock No. 196-5395
BrandRS PRO
SGD4.27
1 Bag of 50
Bag(s)
7mm 9mm 1mm O-Ring Nitrile Rubber -30°C +90°C
RS Stock No. 196-5944
BrandRS PRO
SGD27.13
1 Bag of 10
Bag(s)
94.97mm 98.53mm 1.78mm O-Ring FKM -15°C +200°C
RS Stock No. 196-5062
BrandRS PRO
SGD9.70
1 Bag of 20
Bag(s)
58mm 64mm 3mm O-Ring Nitrile Rubber -30°C +90°C