O-Rings

O-Ring Design and Manufacturing by Seal & Design
Specializing in the Design, Manufacturing and Distribution.
of O-rings in AS-568. O-Rings


ASTM  FDA  Gapi Group  Parco RHS UL WRC

  • O-ring Kits
  • Mil - Spec - O-Rings
  • PTFE Back-up O-Rings (MS-28774, MS 28775)
  • Metallic O-Rings
European (Din)
Japanese Metric (JIS)
and Custom designed O-Ring sizes.
Most sizes available in x-ring
or quad-ring profiles.
Also available from Seal & Design

O-Ring Characteristics:
The simple geometry is the main characteristic of an 0-Ring which, in conjunction with proper elastomer selection results in a low cost, easy to use and efficient sealing system.
Elastomeric materials, when compressed, react like a high viscosity fluid which transmits applied stress in every direction; consequently, the 0-Ring serves as a barrier, blocking the leak paths between the sealing surfaces.
Technical sealing has been defined by DIN Standards as follows:
A) "Static Seal" - The sealing action created between two mating surfaces with no leakage of liquid or minimal diffusion of gas.
B) "Dynamic Seal" - The mating surfaces have relative movement with minimal leakage of liquid (usefuf to protect the sealing efficiency, acting as lubricant).
0-Rings offer several advantages over other sealing systems: simplicity of construction, standardized seal dimensions, wide selection of materials, suitability for both static and dynamic applications, standard dimensioning of glands, low cost due to high volume manufacturing.
Sealing is always achieved through a positive compression or squeezing action, resulting in a deformation of the 0-Ring cross-section.
The most important sealing characteristic of an 0-Ring is its resistance to compression set or residual deformation.

Note: We stock a full line of O-Rings: Viton® O-Rings, Buna-N O-Rings, Silicone O-Rings, Chemraz® O-Rings, EPDM O-Rings, PTFE O-Rings, Neoprene O-Rings, Metric O-Rings, Back-Up Rings, Quad Rings, Square Rings, Spliced O-Rings, Custom O-Rings