KA Rotary Seal
The profile KA rotary sealing set consists of a fabric-reinforced rubber sealing part
and two back-up rings to increase the stability and to prevent extrusion into the gap,
especially for applications where eccentricity occurs.
Due to the special design of the dynamic surface a „grease depot” will be built up
retaining the lubrication film and avoiding dry operation.
• Enhanced sealing performance in nonpressurized conditions.
• Robust seal profile for harshest operating conditions.
• Extreme wear resistance.
• Insensitive to pressure peaks.
• High temperature resistance in case of
suitable compound selection.
• Extremely high extrusion resistance.
• Installation in closed and undercuthousings.
Range of application
Mainly for applications where the pressure alternates from one side of the seal to the
other, such as pivots for rotating track rings, swivel joints, hose reels, and in machine
|≤ 60 °C||≤ 400 bar|
|≤ 80 °C||≤ 315 bar|
|≤ 100 °C||≤ 250 bar|
|Operating temperature||-30 °C to +100 °C|
|Sliding speed||≤ 0.2 m/s|
Recommendation for rotary transmissions: P ∙ v ≤ 50
(For definition see catalogue „Hydraulic Seals”, chapter „Rotary seals”, introduc tion.)
Standard compound for the sealing part is a NBR-based elastomer with fabric-reinforced dynamic surface (Z5011/Z5014). The back-up rings are made of a polyamidbased material.
The profile KA rotary sealing sets are designed to be snapped into closed grooves.
Special versions for open grooves in endseal applications are available. During installation, first the sealing part must be installed, followed by the back-up ring. To avoid
damaging the seal, sharp edges within the installation area should be removed.