O-rings are one of the most commonly used and most important components in machines utilised across a wide variety of different industries. O-rings are deceptively simple components – resembling no more than a circular ring of rubber material acting as a sealant between two machine parts. Behind their outward appearance, however, O-rings are the result of precision engineering and extensive development. There are thousands of different types of O-ring, each custom-designed to work with a specific machine type. We are one of the UK’s leading providers of industrial O-rings, and can accommodate bespoke orders to suit the machinery you use in your line of work.

How are O-rings used?

O-rings are used in virtually every engineering setting, especially in the hydraulics industry but also extending to all branches of industrial manufacturing. O-rings are also critical components wherever a water seal is required, for instance in showers, sinks and other plumbing applications. Different O-rings are required to accommodate different pressures, temperatures and liquid media.

How to order

Our team are here to help you with your business. Ordering O-rings from BSCL is a simple process. To get your order started we simply need the following information:

  1. The inside diameter = I.D
  2. The cross section = C.S.
  3. The compound (material) from which it is to be made
  4. The hardness of the product if known

This is all the information we require to identify the precise O-ring you need. We use an 11 digit part number system as a means of precision identifying different O-ring varieties.
All O-rings are available in a range of colours. For information, please get in touch with our sales team by calling (01922) 646716.

Materials Guide

When we have identified the size of the O-Ring you require, we then select a suitable material that will be compatible with the expected use. This is a technical matter that is important to get right. Our team used their extensive industry experience and training to select the appropriate material for your O-ring.

If you are interested to know more, we have provided the following technical resources. Please follow the links below for more details:

  1. You can find out more technical information about materials by visiting our Material Compound Guide on our website click here.
  2. For more information about choosing the right material, download our PDF Material Compatibility chart by clicking here.
  3. O-ring Hardness & Material Reference Guide – Shore & IRHD ranges click here.
  4. Temperature Range for Popular Materials click here.


Our O-rings are available in all the main internationally recognised sizing standards. These include the following:

  1. British Imperial (BS1806) and Metric (BS4518
  2. European Metric (ISO/DIN 3601), including German (DIN 3771), Swedish (SMS1586/1588) and French (NFT47 501)
  3. American (SAE AS568A)
  4. Japanese Metric (JISB 2401)


Safety standards are our highest priority. We, therefore, offer the following quality material compounds, with Approved Certification from internationally recognised agencies.

  1. WRAS
  2. FDA
  3. DVGW
  4. KTW
  5. NSF61
  6. EN681-1

Ancillary Products

We stock an extensive range of ancillary products to complement your O-ring order. These include O -ring kits, Splicing kits, O-ring gauges, O-ring cord, Nu-lips & Quad Rings, Anti-extrusion Rings and Adhesives. Please explore our product pages for further details.

Need a price?

Click here for a free quote on O-rings to suit your business. For further information, please get in touch with our knowledgeable sales team and we will be happy to answer any questions you may have. We look forward to hearing from you and helping you with your order.