Cookies on the SKF website

SKF uses cookies on our websites to align the information shown as closely as possible to our visitors’ preferences, such as country and language choices.

Will you accept SKF cookies?

Sealing solutions

PD two-bearing housings are designed for two sealing solutions:
  • a V-ring seal, for housings in the PDN 2 and PDP series (fig. 1)
  • a felt strip and a V-ring seal, for housings in the PDN 3 and PDR series (fig.2)
Table 1 provides an overview of the properties and suitability of each sealing solution. This information should be used as a guideline, which cannot substitute for testing the seal in its application.
Housings in the PDN 3 and PDR series have felt strips, which are mounted in a groove in the cover. At circumferential speeds above 4 m/s, a small gap forms between the felt and the seal counterface.
The outboard V-ring seals (for all housing series) provide additional protection against contaminants. They can accommodate circumferential speeds up to 7 m/s.
PD housings are supplied with seals but the seals can also be ordered separately.
SKF logo