CRW1, CRWA1, CRWH1 and CRWHA1 - SKF Wave seals
The CRW1 (fig 1), CRWH1 (fig 2), CRWA1 (fig 3) and CRWHA1 (fig 4) 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. For additional information, refer to the section Sealing lip design. They have a metal outside diameter for easy installation and a firm and accurate fit in the housing bore.
The seals feature SKF Bore Tite Coating on the outside diameter, a non-hardening, water-based acrylic sealant that helps fill small imperfections in the housing bore.
They are primarily designed to retain lubricants but are also suitable for contaminant exclusion, especially the CRWA1 and CRWHA1 seals designed with an auxiliary lip.
CRW1: Seal with a single steel case, SKF WAVE lip and a carbon steel garter spring.
CRWH1: Seal with a double steel case, SKF WAVE lip and a carbon steel garter spring.
CRWA1: Seal with a single steel case, SKF WAVE lip, a carbon steel garter spring and an auxiliary, non-contacting lip.
CRWHA1: Seal with a double steel case, SKF WAVE lip, a carbon steel garter spring and an auxiliary, non-contacting lip.
All of these seals are available with sealing lips made of either nitrile rubber or the SKF developed fluoro rubber compound SKF Duralife. Other materials are also available on request.
The permissible operating conditions are provided in the Seal selection table.