The seal assembly consists of a filled PTFE seal ring energized by an NBR O-ring. For aggressive media an FKM O-ring can be substituted.
The face material and design provides high abrasion resistance and low friction to allow running at low rotational speeds with minimal stick-slip. The low friction is helped by the groove in the sliding face, which provides an oil reservoir. The groove also reduces the contact area with the rotating counter face and allows a higher contact pressure. The circular recess in the outer diameter increases the contact of the face with the O-ring and minimizes the possibility of the sealing components rotating relative to each other.
Features
High temperature capability
Low friction, low counterface wear
Minimal stick-slip
Good extrusion resistance
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