O Rings
O-rings in common metric sizes, sold in packs of 5 and 10, for sealing hydraulic, pneumatic, water and fuel fittings.
O-ring sizes
- 1.78 mm cross section — sizes from 2.57 mm inside diameter upwards.
- 2.62 mm cross section — sizes up to about 41 mm inside diameter.
- Each size lists its R-number (e.g. R2031, R3112) for easy matching.
How to measure an O-ring
O-rings are sized by cross section (thickness) x inside diameter. Measure your old O-ring — or the groove it sits in — and match both numbers, or look up the R-number.
Frequently asked questions
Where can I buy O-rings near me?
Order online or visit our Boksburg (Johannesburg) and Cape Town branches — bring your old O-ring and we'll match it.
40.95mm ID 2.62mm Thickness Global part code: (R3162) Packet of 5
products:
10
39.35mm ID 2.62mm Thickness Global part code: (R3156) Packet of5
products:
24
37.77mm ID 2.62mm Thickness Global part code: (R3150) Packet of 5
products:
5
36.17mm ID 2.62mm Thickness Global part code: (R3143) Packet of 5
products:
11
34.6mm ID 2.62mm Thickness Global part code: (R3137) Packet of 10
products:
14
33mm ID 2.62mm Thickness Global part code: (R3131) Packet of 10
products:
9
31.42mm ID 2.62mm Thickness Global part code: (R3125) Packet of 10
products:
8
29.83mm ID 2.62mm Thickness Global part code: (R3118) Packet of 10
products:
6
28.25mm ID 2.62mm Thickness Global part code: (R3112) Packet of 10
products:
4
26.65mm ID 2.62mm Thickness Global part code: (R3106) Packet of 10
products:
7
23.47mm ID 2.62mm Thickness Global part code: (R3093) Packet of 10
products:
13
20.29mm ID 2.62mm Thickness Global part code: (R3081) Packet of 10
products:
6
18.72mm ID 2.62mm Thickness Global part code: (R3075) Packet of 10
products:
1
Sold out
7.6mm ID 2.62mm Thickness Global part code: (R3031) Packet of 10
Sold out
3.63mm ID 2.62mm Thickness Global part code: Packet of 10
Sold out
7.66mm ID 1.78mm Thickness Global part code: (R2031) Packet of 10
Sold out
21.9mm ID 2.62mm Thickness Global part code: (R3087) Packet of 10
Sold out
17.13mm ID 2.62mm Thickness Global part code: (R3068) Packet of 10
Sold out
15.54mm ID 2.62mm Thickness Global part code: (R3062) Packet of 10
Sold out
13.95mm ID 2.62mm Thickness Global part code: (R3056) Packet of 10
Showing 20 of 55.