Seal Strip Maintenance & Replacement Cycle Guide

Roller press seal strips are key components preventing glaze and powder leakage. Their sealing performance directly affects nip pressure stability and product thickness consistency. Seal strip failure is one of the most common causes of unplanned downtime.

1. Seal Strip Functions and Failure Symptoms

Primary Function — Seal both sides of the nip zone, preventing glaze and powder from entering mechanical transmission areas
Failure Signals — Nip zone material leakage, pressure fluctuation exceeding ±5%, inconsistent product edge thickness
Inspection Frequency — Check weekly, immediately shut down if abnormalities are found

2. Seal Strip Replacement Cycle Reference

Empirical Data: Under continuous production conditions, standard fluororubber seal strip replacement cycle is approximately 3,000-5,000 hours; polyurethane seal strips approximately 2,000-3,000 hours. Operating environment (temperature, pressure, raw materials) significantly affects actual lifespan.

3. Replacement Steps

1. Preparation: After shutdown and cooling, clean residue and oil from seal grooves, check for groove deformation.

2. Remove Old Seal Strip: Use specialized tools to carefully remove, avoiding scratches on groove surfaces.

3. Install New Seal Strip: Confirm seal strip direction (usually directional), evenly press into groove, ensure no warping.

4. Secure: Use pressing plates or bars to secure, check uniformity of clamping force.

5. Trial Run Verification: Run at low speed for 5 minutes, check for material leakage, resume normal production only after confirmation.

4. Methods to Extend Seal Strip Lifespan

Keep nip zone clean to reduce particle wear
Avoid prolonged idling to reduce dry friction on seal strips
Use seal strip materials compatible with raw materials
Record conditions at each replacement to build replacement cycle database

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Brand names such as SACMI, KEDA, and HLT mentioned on this website are used solely to indicate product compatibility. GDNOS is not authorized by, affiliated with, or endorsed by these brands.