SKF Radial Shaft Seal (CR Seal) CRWH1 R - NBR

• CRWH1 Seal with a double steel case, SKF WAVE lip, and a carbon steel garter spring.
• The CRWH1 radial shaft seals, also called SKF Wave seals as part of the CR Seals assortment, are low-friction seals with SKF WAVE lip design for reduced heat generation.
• They have a metal outside diameter for easy installation and a firm and accurate fit in the housing bore.

About Radial Shaft Seals - General

• Some radial shaft seal designs have an auxiliary lip that protects the primary sealing lip from dust and other contaminants.
• A suitable lubricant in the space between the primary sealing lip and the auxiliary lip can reduce wear and delay corrosion.
• Contaminants that have passed the auxiliary lip will eventually cause damage to the counterface surface area.
• A build-up of heat can also occur between the two lips, resulting in premature wear.
• Radial shaft seals are used in a multitude of applications.
• Radial shaft seals are used between rotating and stationary machine components or between two components in relative motion and consist of two main parts:

 A cylindrical outer covering of sheet steel (case)

• A cylindrical outer covering of sheet steel (case) or an elastomer that has the requisite interference to seal statically against the housing bore.

 A Sealing

• A sealing lip is made of an elastomeric or thermoplastic material that seals dynamically and statically against the shaft.
• The lip has a sealing edge that is formed by moulding, cutting, or grinding.
• It is normally pressed against the counterface surface of the shaft, with a defined radial load, by a garter spring.
• The edge of the sealing lip and the shaft counterface surface form the most important functional area of a radial shaft seal.
• The sealing effect of the lip can be enhanced by designing the contact area of the lip with hydrodynamic features.

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