Dow Corning 781 Acetoxy Silicone Sealant

Perfect sealant for non-porous surfaces for internal sealing

  • High modulus – acetoxy cure type
  • Fast cure – tack free in one hour
  • Working time of 5-1- minutes
  • Listed by the UK Water Regulations Advisory Scheme (WRAS) for use in contact with potable water once cured
  • Conforms to ISO 11600-F&G-20LM
  • 100% recovery
  • Excellent weatherability
  • Application temperature range 5 to 40degrees C
  • Joint movement capability /- 20%

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Dow Corning 781 is a one part, silicone sealant, which has excellent adhesion to a wide range of non-porous surfaces including glass, aluminium, painted surfaces and composite boards. It is fast curing and offers excellent resistance to aging, shrinkage, cracking and discolouring.

Additional information

Available Sizes

310ml cartridge


Aluminium, Black, Brown, Clear, Grey, White

Typical Application

Suitable for galzing applications, weathersealing of sheet cladding, curtain walls, draught proofing and general internal sealing applications.

The quickest and easiest way to order any of our products or solutions is to call us on 01822 855 885, or you can complete the form on our Contact page to send us an email.

Our office opening hours are: Monday to Friday 6:30am to 5pm.