A gasket is a mechanical seal which fills the space between two or more mating surfaces, generally to prevent leakage from or into the joined objects while under compression. It is a deformable material that is used to create a static seal and maintain that seal under various operating conditions in a mechanical assembly.
Some seals and gaskets 1. o-ring 2. fiber washer 3. paper gasket 4. cylinder head gasket
Polytetrafluoroethylene (PTFE) gasket
Compressed fiber gasket
Gasket containing white asbestos, dismantled during a redevelopment project in Germany. Parts containing asbestos must be dismantled and disposed of with care, in this case following the BAuA TRGS 519 technical guide for handling asbestos during demolition, reconstruction or maintenance work
Sealant is a substance used to block the passage of fluids through openings in materials, a type of mechanical seal. In building construction sealant is sometimes synonymous with caulk and also serve the purposes of blocking dust, sound and heat transmission. Sealants may be weak or strong, flexible or rigid, permanent or temporary. Sealants are not adhesives but some have adhesive qualities and are called adhesive-sealants or structural sealants.
Self-leveling silicone firestop system used around pipe through-penetration in a two-hour fire-resistance rated concrete floor assembly.
