O-Rings, Seals & Gaskets

High performance seals are vital across all industries for leak prevention, stopping damage, equipment failure, and costly downtime. O-Rings, seals, and gaskets are all forms of leak preventing seals, which are suitable for different applications. 

What are O-Rings, Seals, and Gaskets? 

O-Rings

Seals

Gaskets

  • Cylindrical O shape seal
  • Typically made of an elastomer
  • Used in static and dynamic applications
  • Require a groove for installation and are then compressed to form the seal
  • Ideal for engines, cylindrical pipes, and hydraulic systems
  • A broad term and can be various shapes and sizes
  • Used in dynamic applications
  • Bonded seals involve a metal washer with a rubber or elastomer ring 
  • Ideal for high pressure applications
  • Compressed sealing component between 2 surfaces
  • They can be flat or curved
  • Typically used for static applications
  • Made from a range of materials
  • Ideal for engine parts and flanges

Which one should you use?

The primary difference between O-rings and gaskets is where they can be utilised – gaskets can be used on irregular or flat surfaces, filling in any gaps, whereas O-rings sit in a cylindrical groove and are better suited to cylindrical parts like pipework.

Which one you choose for your seal depends on the application, environmental factors, temperature range, installation, and cost factors.

For more in-depth guides to choosing the right seal, materials, considerations and more click the articles below or contact our technical team here.

_______________________________

3 Items

Set Descending Direction
  1. A Technical Guide to Bonded & Self-Centring Seals Bonded Seals Originally designed to replace copper washers in higher pressure systems, bonded seals are simple in construction but very reliable. Made up from an elastomeric ring bonded to a metal form (either circular, square or rectangle in shape); the metal disc resists the bursting forces ...
  2. A Technical Guide to Choosing O-Rings A Technical Guide to Choosing O-Rings TECHSiL are proud to be a preferred distributer of Trelleborg Sealing Solutions for O-Rings and Bonded Seals. O-Rings are used across all industries for sealing applications, meaning there are lots of considerations to assess before choosing the ...
  3. O-Rings for Hydrogen Sealing Throughout Hydrogen Supply Chain O-Rings for Hydrogen Sealing Throughout Hydrogen Supply Chain Hydrogen production requires infallible seals to ensure safety, whether to infrastructure or, when used as fuel in vehicles, passenger safety. Hydrogen is volatile and incredibly difficult to seal and contain due to its low molecular ...
per page
© 2025 TECHSiL Ltd