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. 196-5505
BrandRS PRO
MYR30.28
1 Bag of 50
Bag(s)
30mm 33mm 1.5mm O-Ring Nitrile Rubber -30°C +90°C
RS Stock No. 196-5967
BrandRS PRO
MYR49.03
1 Bag of 10
Bag(s)
45.69mm 50.93mm 2.62mm O-Ring FKM -15°C +200°C
RS Stock No. 196-5985
BrandRS PRO
MYR78.31
1 Bag of 5
Bag(s)
120.32mm 125.56mm 2.62mm O-Ring FKM -15°C +200°C
RS Stock No. 196-5662
BrandRS PRO
MYR35.82
1 Bag of 25
Bag(s)
10mm 13mm 1.5mm O-Ring FKM -15°C +200°C
RS Stock No. 196-5680
BrandRS PRO
MYR74.51
1 Bag of 10
Bag(s)
68mm 71mm 1.5mm O-Ring FKM -15°C +200°C
RS Stock No. 196-5092
BrandRS PRO
MYR13.74
1 Bag of 5
Bag(s)
118mm 124mm 3mm O-Ring Nitrile Rubber -30°C +90°C
RS Stock No. 796-0959
Mfr. Part No.SOFQ0910003000020001A
BrandKlinger
MYR42.91
1 Bag of 10
Bag(s)
219.1mm 279.4mm 3mm RF Natural Rubber -25°C +80°C
RS Stock No. 196-5550
BrandRS PRO
MYR31.62
1 Bag of 50
Bag(s)
25mm 28.2mm 1.6mm O-Ring Nitrile Rubber -30°C +90°C
RS Stock No. 196-5500
BrandRS PRO
MYR14.15
1 Bag of 50
Bag(s)
26mm 29mm 1.5mm O-Ring Nitrile Rubber -30°C +90°C
RS Stock No. 128-877
BrandRS PRO
MYR22.08
1 Bag of 50
Bag(s)
6.6mm 11.4mm 2.4mm O-Ring Seal Nitrile Rubber -30°C +120°C
RS Stock No. 196-5392
BrandRS PRO
MYR14.67
1 Bag of 50
Bag(s)
5.5mm 7.5mm 1mm O-Ring Nitrile Rubber -30°C +90°C
RS Stock No. 196-5751
BrandRS PRO
MYR39.09
1 Bag of 5
Bag(s)
80mm 84mm 2mm O-Ring FKM -15°C +200°C
RS Stock No. 689-704
BrandRS PRO
MYR38.36
1 Bag of 50
Bag(s)
3/4in 15/16in 3/32in O-Ring Seal Nitrile Rubber -30°C +120°C
RS Stock No. 196-5059
BrandRS PRO
MYR30.15
1 Bag of 20
Bag(s)
52mm 58mm 3mm O-Ring Nitrile Rubber -30°C +90°C
RS Stock No. 527-9807
BrandRS PRO
MYR45.11
1 Bag of 50
Bag(s)
9.25mm 1/2in 1.78mm O-Ring Seal Silicone -60°C +200°C
RS Stock No. 196-6011
BrandRS PRO
MYR61.43
1 Bag of 10
Bag(s)
40.87mm 47.93mm 3.53mm O-Ring FKM -15°C +200°C
RS Stock No. 196-5801
BrandRS PRO
MYR40.09
1 Bag of 5
Bag(s)
52mm 57mm 2.5mm O-Ring FKM -15°C +200°C
RS Stock No. 196-5928
BrandRS PRO
MYR23.21
1 Bag of 10
Bag(s)
26.7mm 30.26mm 1.78mm O-Ring FKM -15°C +200°C
RS Stock No. 196-5478
BrandRS PRO
MYR14.67
1 Bag of 50
Bag(s)
12mm 15mm 1.5mm O-Ring Nitrile Rubber -30°C +90°C
RS Stock No. 196-5764
BrandRS PRO
MYR74.17
1 Bag of 5
Bag(s)
96mm 100mm 2mm O-Ring FKM -15°C +200°C