Seals & O-Rings

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

How do seals and O-rings work?
A seal or O-ring is seated 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 seals and O-rings
Seals 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 seal and O-ring kits for general maintenance or when looking after a range of sealed part to ensure the correct size is available.

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

Sizes vary between seal and ring 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 seals and 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. 128-912
BrandRS PRO
MYR16.67
1 Bag of 50
Bag(s)
14.6mm 19.4mm 2.4mm O-Ring Seal Nitrile Rubber -30°C +120°C
RS Stock No. 689-489
BrandRS PRO
MYR64.97
1 Bag of 50
Bag(s)
17.28mm 23.8mm 2.03mm Bonded Seal Nitrile Rubber -10°C +80°C
RS Stock No. 689-524
BrandRS PRO
MYR74.16
1 Bag of 50
Bag(s)
10.7mm 16mm 1.5mm Bonded Seal Nitrile Rubber -10°C +80°C
RS Stock No. 128-833
BrandRS PRO
MYR12.02
1 Bag of 50
Bag(s)
10.1mm 13.3mm 1.6mm O-Ring Seal Nitrile Rubber -30°C +120°C
RS Stock No. 211-9011
BrandRS PRO
MYR8.04
Each (In a Pack of 5)
units
25mm 47mm 7mm Shaft Seal Nitrile Rubber -40°C +100°C
RS Stock No. 245-9612
BrandRS PRO
MYR613.55
1 Kit
Kit(s)
- - - Metric O-Ring Splicing Kit Viton® - -
RS Stock No. 749-604
BrandRS PRO
MYR3.998
Each (In a Pack of 4)
units
12.5mm 18.5 → 21.5mm 5.5mm V-Ring Seal Nitrile Rubber -40°C +100°C
RS Stock No. 527-9970
BrandRS PRO
MYR70.75
1 Bag of 50
Bag(s)
29.75mm 1-7/16in 3.53mm O-Ring Seal Silicone -60°C +200°C
RS Stock No. 689-495
BrandRS PRO
MYR70.48
1 Bag of 50
Bag(s)
21.54mm 28.58mm 2.5mm Bonded Seal Nitrile Rubber -10°C +80°C
RS Stock No. 128-906
BrandRS PRO
MYR16.87
1 Bag of 50
Bag(s)
11.6mm 16.4mm 2.4mm O-Ring Seal Nitrile Rubber -30°C +120°C
RS Stock No. 689-625
BrandRS PRO
MYR12.51
1 Bag of 50
Bag(s)
5/16in 7/16in 1/16in O-Ring Seal Nitrile Rubber -30°C +120°C
RS Stock No. 689-596
BrandRS PRO
MYR11.09
1 Bag of 50
Bag(s)
3/16in 5/16in 1/16in O-Ring Seal Nitrile Rubber -30°C +120°C
RS Stock No. 521-5752
BrandRS PRO
MYR211.62
Each
units
- 25.4mm - O-Ring Seal Carbon Steel, Stainless Steel - -
RS Stock No. 749-626
BrandRS PRO
MYR3.283
Each (In a Pack of 4)
units
18mm 27 → 29mm 7.5mm V-Ring Seal Nitrile Rubber -40°C +100°C
RS Stock No. 689-574
BrandRS PRO
MYR12.48
1 Bag of 50
Bag(s)
1/8in 1/4in 1/16in O-Ring Seal Nitrile Rubber -30°C +120°C
RS Stock No. 689-619
BrandRS PRO
MYR12.79
1 Bag of 50
Bag(s)
1/4in 3/8in 1/16in O-Ring Seal Nitrile Rubber -30°C +120°C
RS Stock No. 128-811
BrandRS PRO
MYR13.16
1 Bag of 50
Bag(s)
6.1mm 9.3mm 1.6mm O-Ring Seal Nitrile Rubber -30°C +120°C
RS Stock No. 689-530
BrandRS PRO
MYR52.42
1 Bag of 50
Bag(s)
12.7mm 18mm 1.5mm Bonded Seal Nitrile Rubber -10°C +80°C
RS Stock No. 128-883
BrandRS PRO
MYR17.76
1 Bag of 50
Bag(s)
7.6mm 12.4mm 2.4mm O-Ring Seal Nitrile Rubber -30°C +120°C
RS Stock No. 211-8737
BrandRS PRO
MYR6.192
Each (In a Pack of 5)
units
6mm 22mm 7mm Shaft Seal Nitrile Rubber -40°C +100°C
Related Products
RS Pro metric O-Rings made from Nitrile, the ...
Description:
RS Pro metric O-Rings made from Nitrile, the most widely used elastomer in the seal industry. These O-Rings have an excellent resistance to petroleum products and work well in either low or high temperatures. Nitrile is highly resistant to abrasion ...
These seals comprise a metal annulus to which ...
Description:
These seals comprise a metal annulus to which a medium nitrile elastomeric ring of trapezoidal cross-section is bonded. They provide high and low pressure sealing for ports on fluid systems where mineral based hydraulic fluids or mineral based engine lubricating ...
RS Pro imperial O-Rings made from Nitrile, the ...
Description:
RS Pro imperial O-Rings made from Nitrile, the most widely used elastomer in the seal industry. These O-Rings have an excellent resistance to petroleum products and work well in either low or high temperatures. Nitrile is highly resistant to abrasion ...
RS Pro imperial O-Rings made from Nitrile, the ...
Description:
RS Pro imperial O-Rings made from Nitrile, the most widely used elastomer in the seal industry. These O-Rings have an excellent resistance to petroleum products and work well in either low or high temperatures. Nitrile is highly resistant to abrasion ...