Alkoxy 620 Weather Sealant

DOLPHIN 620 WS is a construction and concrete silicone sealant which is one-part, neutral curing, low modulus silicone sealants particularly suitable for interior and exterior applications such as general glazing, weather sealing in curtain wall and building facades, and expansion joints.



•Neutral cure

•Resistant to ozone, ultra-violet radiation and temperature extremes 

•Joint movement capability + 50% 

•Low odor

•Good unprimed adhesion to a variety of substrates

•Conforms to ISO 11600-F&G-25LM

•MAS Green Certification ensures safety for use in the most sensitive indoor environments including hospitals and schools.




•Suitable for external weather sealing 

•Durable adhesion in range including concrete, masonry, brick, PVC-U, wood glass and glazed surfaces  

•Used in some metals for construction without danger of corrosion from the sealant.

Application instruction

Where back-up material is required, closed cell polyethylene backer rod is recommended. Back-up materials provide back pressure and avoid three sided adhesion that limits sealants movement capability. Areas adjacent to joints should be masked with tape to prevent contamination of the substrates and to ensure a near sealant line. Masking tape should be removed immediately after tooling. Wipe off the excess sealant with clean cloth and polyethylene scraper.

Storage and Shelf life

Always store in a cool dry place. Store away from sunlight and preferably not more than 25°C. Storage should be frost protected. DOLPHIN 620 WS has 12 months shelf life if stored in required conditions.


Application Video

DOLPHIN 620 WS is available in 290mL cartridges. 

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