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DOWSIL™ 781 Acetoxy Silicone
Description

781 Acetoxy Silicone Sealant is a one-part silicone sealant which has good adhesion to a range of non-porous surfaces including glass, aluminium, painted surfaces and composite boards. It is not recommended for use on porous substrates such as concrete, stone, marble or granite.

Features:

  • High strength.
  • Good elasticity.
  • Resistant to ozone, ultra-violet radiation and temperature extremes.
  • Excellent resistance to ageing, shrinkage, cracking and discolouring.

Standards:

Conforms to ISO 11600 F&G 20LM

General information
Features

High strength

Good elasticity

Resistant to ozone, ultra-violet radiation and temperature extremes

Excellent resistance to ageing, shrinkage, cracking and discolouring

Uniclass 2015
Pr_30_31_76_78 Silicone glazing compounds and sealantsPrimary
CAWS

F11/116 Mortar jointed, sealant pointed glass block walling

F11/121 Sealant jointed glass block walling

F11/141 Sealant jointed glass block walling

F11/15 Mortar jointed, sealant pointed glass block walling

F11/410 Perimeter/ Expansion joints with sealant

H11/772 Curtain walling joint assembly sealants

H31/10 Metal

H31/110 Metal

H31/120 Metal

H41/655 Sealant jointing proprietary system

K13/140 Proprietary laminated plastics veneered panel lining

K13/160 Proprietary

K13/370 Sealant pointing

L40/230 Bead fixed single glazing

L40/250 Bead fixed single glazing

L40/310 Bead fixed single glazing

L40/330 Bead fixed single glazing

L40/350 Bead fixed single glazing

L40/372 Bead fixed insulating glass units

L40/380 Bead fixed insulating glass units

L40/381 Bead fixed insulating glass units

L40/495 U-profiled single glazing

L40/496 U-profiled double glazing

L40/57 Bead fixed insulating glass units

L40/58 Bead fixed insulating glass units

Specification data - Silicone glazing compounds and sealants
Product Reference

DOWSIL™ 781 Acetoxy Silicone

Standard product features

Colour:

Clear.

Properties:

- At 23°C (73°F) and 50% RH:

  • Application temperature: 5–40°C.
  • Specific gravity: 1.02.
  • Extrusion rate: 220 g/minute.
  • Skin-over time: 14 minutes.
  • Cure rate (1 day/ 3 days): 3/ 5 mm.

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