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O-Rings
O-Rings
If you’re unsure which material would be best for your application, please refer to our handy chemical resistance table here. Tip: Use Ctrl+F to search
Subcategories
O-Ring Supplier
O-rings can be found everywhere, from the brakes on your car, to the A/C in your office, to the hydraulic systems on the plane that takes you on holiday. They retain crucial fluids including water, coolant and oil and protect systems from harmful contaminants. We stock a wide range of O-rings including nitrile, EPDM and Viton in a huge selection of sizes to accommodate any need or application. We also offer a range of accessories, including O-ring cord, O-ring picks, O-ring measuring gauges, O-ring lubricant and complete O-ring kits.Why Choose Northwest Bearings?
Northwest Bearings is one of the UK’s leading suppliers of O-rings of every kind. We’ve been serving customers across the country and internationally for more than 20 years and offer premium products at competitive prices backed by a wealth of expertise.- Over two decades of experience
- Free UK shipping
- Same-day delivery available
- Selection of O-ring sizes and materials
- Competitive international shipping rates
- Range of handy accessories
O-Rings FAQs
What are the Benefits of O-Rings?
O-rings have a range of benefits:
- Strong sealing – O-rings are perfect for creating a quick, strong seal, preventing the escape of gas and fluids
- Versatile – their adaptable shape and easy sealing make them ideal for a wide range of applications
- Chemical resistance – the materials used for O-rings offer excellent chemical resistance
- Temperature tolerance – O-rings, particularly Viton O-rings, can withstand high temperatures and high-stress environments
- Cost-effective – their simplicity makes O-rings a cost-effective sealing solution
- Easy to install – O-rings are easy to install and replace for straightforward equipment maintenance
What is an O-Ring Used For?
O-rings are used for two principal purposes:
- Retaining fluids such as water, coolant or lubricant as well as gases
- Preventing the intrusion of contaminants, including dirt and dust, or keeping internal fluids separate
Where are O-Rings Commonly Used?
The use of O-rings spans a huge range of industries:
- Aerospace
- Automotive
- Plumbing
- Food and drink
- HVAC
- Electronics
- Household
- Industrial machinery
- Medical devices
- Oil and gas
How do I Know the Correct O-Ring Size?
Finding the correct O-ring size is easy. Either:
- Measure the old O-ring, taking thickness, outside diameter and inside diameter
- Or, measure the size of the seat where the O-ring will be installed
Do O-Rings Need to be the Exact Size?
O-rings are one of the more forgiving types of seal in terms of sizing, but having the right size is the best way to ensure a reliable seal. To make finding the right size easy, we stock a wide selection of O-rings, and you can use our simple search tool to quickly narrow down the options.
How Tight Should an O-Ring Fit?
An O-ring should be snug but not so tight that it’s stretching when you fit it. If it stretches when you install it, you should opt for a larger size.
