Oil Seals, Lip Seals & Rotary Shaft Seals | Buy Online - Polymax UK
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Oil seals are commonly used in driveshafts, crankshafts and hydraulic cylinders where a rotating shaft is lubricated by oil or grease. The seal works like a cap, covering the clearance between the shaft and housing, stopping fluids from leaking whilst preventing containments from entering the chamber. If you are replacing a worn part because you have identified a leak, refer to your machinery handbook to find the type of oil seal you require. Whilst this is not always possible there are a few guidelines to help you get the right seal for the job, read our identify oil seals guide here.
Measurement: The inner diameter surrounding the rotating shaft is typically fitted with an energised sealing lip, or garter spring, which allows some give to prevent a build-up of friction. Meanwhile, the outer diameter must have a secure fit with the static housing or bore. Therefore, we recommend sizing the oil seal with a smaller inner diameter and wider outer diameter.
Design: Polymax oil seals are currently available in three designs: Type A (fully enclosed elastomer), Type B (partly enclosed elastomer) and Part C (partly enclosed, metal reinforced). Type A is fully enclosed with a rubber elastomer. Type B and C both have metal exposed on the top which allows for a tighter tolerance and Type C features an additional metal insert for heavy duty applications.
Other Considerations: Our comprehensive range of oil seals is available in Imperial or Metric sizes, single or double lips and Nitrile or Viton rubber materials.
To compare oil seal codes across 23 industry retailers please refer to our oil seal cross-reference document.
Can't find what you need? Contact one of our experts. Call +44 (0)1420 482862 or email email@example.com.