ecoSEAL DOWSIL™ 799 Plastic and Glass Silicone Sealant


ecoSEAL DOWSIL™ 799 is a one-part neutral curing, low modulus silicone sealant specially formulated for glazing and weathersealing of windows & doors. It comes in a foil sausage which creates less waste when disposed.

Product info


  • Offers durable adhesion to most porous and non-porous substrates including masonry, brick, aluminium, PVC, glass and glazed surfaces
  • Mould and mildew resistant
  • Easy to apply and tool
  • Neutral cure
  • Low modulus, high elasticity
  • Low odour

Substrate Type

  • Glass
  • Toughened Glass
  • Polycarbonate
  • PVCu
  • Powdercoat



How to use Dowsil 799 foils as part of the ecoSEAL system

Technical Information

Where to use Interior/Exterior
Paintable No
Time to cure 24 hours
Container Type Foil Sausage
Shelf life 1 year
Sizes 300 ml
Application method Sausage Gun


Surface Preparation

Surfaces must be cleaned, dry and free from grease and dust. Non-porous surfaces, such as aluminium, glass etc., should be cleaned with a suitable solvent for the substrate.

Application Instructions

Apply the product using the Geocel ecoSEAL sleeve and a cartridge gun. It is also suitable for use with a standard 400ml Sausage Gun

Clean up

Uncured material can be removed by using a suitable solvent. Cured material may be removed by abrasion or other mechanical means.

Quantity Estimator

Enter joint dimensions below to estimate number of cartridges required


You will require x cartridge