| Oil Seals and O-Rings |
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Oil seals or alternatively Rotary shaft seals, made from synthetic elastomers bonded to a usually metal case, are used in a wide range of applications under very varied conditions. Oil seals provide an economical means of sealing against rotating shafts, preventing system lubricants from leaking and also external contamination from entering.
When designing the seal to run under specified conditions, there are many factors to take into account - Speed, Temperature and Medias are just some of the main considerations. |
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| O Rings |
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O-rings are produced from a wide selection of elastomeric materials. NBR o-rings, VITON® o-rings, EPDM o-rings, SILICONE o-rings, NEOPRENE o-rings, and POLYURETHANE o-rings - these are some of the common materials stocked and supplied by us. Please see our material table for a full material selection.
An O-ring serves as a barrier, preventing the leak paths between the sealing surfaces. O-rings offer several advantages over other sealing systems with its simplicity of construction, standardized seal dimensions, wide selection of materials and suitability for both static and dynamic applications. The most important sealing characteristic of an O-ring is its resistance to compression set or residual deformation.
The design of an O-ring application is based upon the available technical data and the experience of the specification writer with regard to dimensions and material characteristics within a specific environment or application. O-ring glands or grooves are normally cylindrical with flat and parallel faces.
In high pressure applications, Back-up rings are used to prevent the extrusion of the elastomeric material through the clearance gaps when close tolerances are difficult to maintain. |
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