A preformed resilient component that seals, cushions, spaces, or retains glazing within a mechanically restrained frame system.

GlassRenu · Educational illustration
Meaning and boundaries
A gasket is not interchangeable with field-applied sealant and may serve weather, compression, wedge, lock-strip, or structural-support functions.
Why it matters in glass restoration
Polish, solvent, water, heat, or mechanical contact can stain, swell, cut, dislodge, or contaminate a gasket.
Related terms
References
- National Glass Association — GANA Glazing Manual, 2022 edition
Publisher’s original source - ASTM International — C864 — Dense Elastomeric Compression Seal Gaskets, Setting Blocks, and Spacers
Publisher’s original source - National Glass Association and FGIA — Compatibility Testing of IG PIB Primary Sealant with Respect to Glazing Materials
Publisher’s original source