Our extensive stock-holding of o/rings includes inch sizes and metric sizes to a range of international, national and industry standards. These are held in a variety of general and high performance elastomers to suit the vast majority of industry applications and can be manufactured to customised dimensions.

O-rings are one of the simplest, yet most engineered, precise, and useful seal designs ever developed. They are one of the most common and important elements of machine design. O-ring selection is based on chemical compatibility, application temperature, sealing pressure, lubrication requirements, durometer, size and cost.

We supply and manufacture o-rings in sizes up to 2 100mm in the following compounds:

  • Butadiene Rubber (BR)
  • Polyurethane
  • Natural Rubber (NR)
  • Epichioro-Hydrinrubber (ECH, ECO)
  • Polyacrylaterubber (ACM)
  • Polysulfide Rubber (PSR)
  • Fluoroelastomer (FKM)
  • Kalrez Perfluoroelastomer (FFKM)
  • Ethylene Propylene Diene Monomer (EPDM)
  • Polychloroprene (Neoprene) (CR)
  • Nitrile Rubber (NBR)
  • PTFE
  • Silicone Rubber (SIR)
  • Butyl Rubber (IIR)
  • Viton
  • Teflon Encapsulated (FEP/PFA)
  • Chlorosulfonated-Polyethylene (CSM)
  • Fluorosilicone
  • Polyisoprene (IR)
  • Ethylene Propylene Rubber (EPR)
  • Styrene Butadiene Rubber (SBR)

Basic O-Ring Groove Dimensions:

The measurement »b« which is the width of the o-ring groove, has to be larger than the deformed o/ring. Depending upon application the groove may be open on one side. However, the pressure applied to the medium to be sealed must have full access to the o/ring.

* Please note that the dimensions listed below are intended as a guide and it is recommended that you contact our technical experts for their input and assistance.

Groove Sizes – Static Application:

*In case of using back-up rings, the width of groove »b« is increased by the width of the back-up ring and in case of support on either side by the double width of the back-up rings.

O-Ring Groove Sizes Static Application

Groove Sizes – Dynamic Application – Hydraulics:

O-Ring Groove Sizes Dynamic Application

Groove Sizes – Dynamic Application – Pneumatics:

O-Ring Groove Sizes Dynamic Pneumatic


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