Products designed to fill, seal and bond joints or mating surfaces, preventing the passage of liquids, gases or particulates. While sealants remain partly flexible after curing to accommodate movement, gasket makers cure into a resilient material that forms a custom-fit gasket between flanges or components.

Common Sub-Categories & Examples:

Silicone Sealants:
- General-purpose silicone (interior/exterior glazing)
- High-temperature silicone (ovens, stoves, flues)
- Sanitary silicone (bathrooms, kitchens)
Polyurethane Sealants:
- Construction joint sealants (expansion joints, precast panels)
- Paintable grade (masonry, wood, metal)
MS-Polymer (Hybrid) Sealants:
- Primer-free adhesion to diverse substrates
- UV-resistant exterior sealants
Anaerobic Gasket Makers:
- Non-sag flange sealants (e.g. P/Lok Gasket Grade N/S)
- General pur pose thread sealants
Polysulphide Sealants:
- Fuel-resistant sealants (fuel tanks, marine applications)
- Chemical-resistant joints
Bituminous & Asphaltic Sealants:
- Roof and deck sealing
- Road joint fillers

Key Characteristics to Consider:

Curing Mechanism: Moisture-cure (silicone), moisture-insensitive (polyurethane), anaerobic (gasket makers).
Movement Capability: Percentage joint movement accommodation (e.g. ±25 %).
Temperature Resistance: From sub-zero (freezer sealants) up to 300 °C+ (high-temp silicones).
Substrate Compatibility: Metals, plastics, wood, masonry – some require primers.
Paintability & Finish: Whether the cured sealant can be over-painted to match surrounding surfaces.
Chemical & Environmental Resistance: Exposure to fuels, solvents, UV, ozone or salt spray.

Flexiseal 400g c