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PTFE high performance shaft seals type C with double lip, with reinforced sealing lip. In addition to the advantages of design A, this variant, optimised for higher pressures, is used when the pressure range of the simple design is no longer sufficient. The additional support lip increases the stability, usually the support lip is made of a compound corresponding to its function. The seal consists of a stainless steel housing, a static sealing element made of FKM, a sealing lip and a support lip made of one or various special application-modified PTFE compounds.
Versatile fluids used in rotary applications with appropriate choice of material, also deficient lubrication and dry running possible.
Standard material: PTFE PT033 as well as various application-modified PTFE compounds Secondary seal FKM or other elastomers possible according to customer requirements
When installing WHLDP seals, careful handling is important to avoid damaging the seal lip. If the seal is installed directly on the shaft, insertion chamfers must be provided at the shaft end. These must be free of notches, sharp edges or rough machining grooves. The diameter of the lead-in chamfer must be smaller than the unloaded diameter of the sealing lip. The angle of the bevel should be as flat as possible within the given range.
Various applications for sealing rotating or swivelling machine elements, e.g. in the chemical and process engineering, aerospace, shipbuilding, motor sports or electric drive sectors in general industry and the automotive industry. By using correspondingly compliant materials, applications in the food and pharmaceutical industries can also be covered.
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