Single lip, outer metal case with reinforcing case. Spring loaded.
Installation and sealing identical to Type SB, it is preferred for larger size application.
Single lip, Bare in outer metal case, spring loaded.
Sealing is more difficult with housing bore of considerable surface roughness andsubject to thermal expansion.
Single lip, rubber covered, spring-loaded.
Can accommodate considerable surface roughness and thermal expansion of the housing and will not rust. Required for split housing and when sealing gaseous or low viscosity media.
<p class="style1">Twin lips, outer metal case with reinforcing case, Spring loaded.<br>
It is recommended where an extra lip is requested to excluded foreign matter from the primary sealing lip. The inner case provided for maximum strength, rigidity and protection of sealing lip and spring. </p>
Twin lips, Bare in outer metal case, spring loaded.
Can be used in applications requiring the extra lip for foreign matter exclusion but where the extra strength of an inner case is not needed.
Twin lips, rubber covered, spring loaded.
An Extra lip is required to exclude foreign matter from the primary sealing lip.
Single lip, rubber covered, springless.
It is recommended somewhere against grease, secondary application against moderate to medium dust and dirty ingress.