Alkoxy 620 Weather Sealant

DOLPHIN WS 620 WEATHER SEALANT is a one-part, neutral curing, high performance silicone sealant used in general construction. It is suitable for interior and exterior applications such as general glazing, weather sealing in curtain wall and building façades, and expansion joints. DOLPHIN WS 620 WEATHER SEALANT has superior weather resistance, virtually unaffected by sunlight, rain, snow, ozone.


- Suitable for external weather sealing. 
- Used in some metals for construction without danger of corrosion from the sealant.
- Ideal for expansion, connection, perimeter and other movement joints.
- External walling and cladding joints.
- Curtain walling and sealing around window and door frames.

Application instruction

The substrate areas that will be in contact with sealant must be clean, dry and free of all loose materials, dust, dirt, rust, oil and other contaminants. Non - porous substrates should be cleaned with a solvent and a clean, lint - free, cotton cloth. Wipe dry immediately with another such cloth before the solvent evaporates from the surface. Porous surfaces may need to be grinded, free of dust and cleaned.

Immediately tool sealant after application and before skin formation. Tooling of sealant should be done in one continuous stroke. Remove masking tape immediately after tooling is completed.

Uncured sealant may be removed from tools, equipment and non-porous surfaces with solvents. For porous substrates, allow the sealant to cure before removal by peeling or other mechanical means. Cured sealant can only be removed mechanically.

Storage and Shelf life

When stored in original unopened container at or below 77°F (25°C) in dry warehouse conditions, DOLPHIN WS 620 WEATHER SEALANT has a shelf life of 12 months from manufacturing date. Containers should always be kept sealed when not in use.


Application Video

DOLPHIN WS 620 WEATHER SEALANT is available in standard caulking cartridges, packed sausages (600ml) and 200 Liter drum.

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