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Weatherstrip Coatings

Momentive Hardcoats for Weatherstrip Coatings

Weatherstrip coatings are thin flexible films applied to dynamic automotive gasket seals typically made from EPDM rubber, such as primary and secondary door seals, trunk roof and auxiliary seals. The function of a weatherstrip coating is to provide freeze release, low coefficient of friction, weatherability, abrasion resistance and elimination of friction related noises, while maintaining a smooth, even surface with good haptics. Momentive’s water-based, primerless coatings, formulated without PFAS, provide a resilient protective film that will increase the performance and help extend the lifetime of automotive weatherstrip seals. Our coating solutions improve the water-repellency and freeze-release characteristics of the weatherstrip seal, which is essential during winter months. Our weatherstrip coatings also provide a smooth, low friction surface and offer best-in-class noise reduction.

Advanced Weatherstrip Coating Features for Superior Performance and Durability

  • Formulated without PFAS
  • Low noise / low friction surface
  • Wide process window
  • High temperature resistance
  • Water repellancy
  • No 'elephant skin' when flexed
  • Colorless grades are available
  • Coating thickness can be measured non-destructively, in the laboratory and online
  • Can be applied on flock for improved performance
  • Tin-free catalysts are available

Typical Applications and Application Methods

Applications

Hood, trunk, and inner and outer door seals.

Application Methods

There are three common application methods for coating weatherstrip seals:

  • Online Spray Coating
  • Offline Spray Coating
  • Drip and Wipe
    • Application method is dependent on part type
    • Online spray coating is the most common and preferred application method
    • Drip and Wipe is similar to the spray process, but the spray guns are substituted for a drip nozzle and brush applicator