The study compares frictional behavior and temperature in PU, PTFE, and NBR seals for marine thrusters, suggesting condition-based monitoring techniques.
The present work studies the behavior of a PU seal, and a hybrid seal design with a PU body with a PTFE insert, and compares it to a conventional NBR seal used in marine thrusters. The seals had a 300 mm diameter. 3 samples of each seal were tested under 27 operating condition combinations, and were characterized by the frictional torque and subsurface temperature. The PU seal had the highest frictional torque and subsurface temperature, followed by the NBR seal, then the PTFE seal. The contact temperature was estimated with a simplified conjugate heat transfer model, and a condition-based monitoring approach was proposed based on the results of the model and online measurement of near-lip temperature.
No takes yet. Share an insight, caveat, or question.
Morad et al. (2025) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: