OK620 OK620 Okon

Rust-Oleum Okon Penetrating Silane Siloxane Sealer S-20

Product Code: OK620

Availability:Out of stock

Rs. 30,210.00 Rs. 27,189.00 9,864.00

OKON S-20 is a water-base, low VOC, high performance ready-to-use, penetrating silane/siloxane water-repellent designed for dense concrete and masonry surfaces. As it penetrates into the surface it reacts with minerals within the substrate and creates a hydrophobic barrier against water intrusion

OKON S-20 can be used on horizontal or vertical surfaces. It protects Cast concrete, tilt-up panels, non-glazed brick, cementitious stucco and other comparably dense materials from the damaging effects of water absorption – efflorescence, freeze-thaw damage, etc. Its unique formulation repels water while being highly permeable to water vapor.

NOTE: It is not allowed to send this item through air mode. Surface mode is enabled for the same. Thus, shipping will be done through surface.

Features of Okon Penetrating Silane Siloxane Sealer S-20

  • Ready-to-use waterbase
  • Breathable (ASTM - D 1653)
  • VOC Compliant (all jurisdictions)
  • Colorless, Odorless, Non-yellowing
  • Non-glossy, will not alter texture or appearance of treated surface
  • Paintable (ASTM - D 3359)
  • Resist high alkalinity
  • Resist chloride salts

How to Apply Okon Penetrating Silane Siloxane Sealers S-20

Surface Preparartion

Clean: Clean exterior surfaces by pressure washing to remove dust, sand or other foreign matter. Vacuum and damp-mop interior surfaces. Remove exterior mildew with JOMAX House Cleaner & Mildew Killer or equivalent. Remove efflorescence with suflamic or dilute muriatic acid. Spot cleaning with acid may cause uneven porosity and blotchy appearance. Rinse the surface thoroughly after chemical cleaning. Use a degreaser to remove oil or grease stains. Allow washed surfaces to dry three days prior to coating.

Dry Substrate: Substrate and surface moisture must be less than 17%. In climates where freezing temperatures have existed prior to application, allow adequate time for surfaces to thaw. In hot weather, lightly dampen surfaces with clean fresh water prior to application to prevent a flash cure of material. Do not apply if ambient air or surface temperatures are below 45º or over 90º F.

Sound Substrate: Surface of concrete and mortar joints must be hard and firm - not loose or sandy. The surface is un-sound if it can be scraped or gouged with a flat screw driver. Unsound mortar or deteriorated concrete should be removed and repaired prior to coating. Parapet walls must be capped and backside sealed with a waterproofing membrane. Protect adjacent and underlying surfaces from over spray and rundown.


OKON S-20 is ready-to-use and should not be diluted. Avoid application in windy weather. In hot weather, where possible, lightly spray surface with water to cool the surface to prevent flash drying. S-20 is best applied by low-pressure airless spray but can be applied by gardentype sprayer or small areas can be applied by brush or roller. For airless spray use a small to medium size airless pump (⅓-⅔ gpm) set at low pressure (500 psi) and a large 0.035”-0.050” tip. Hold spray tip 12-18 inches from the surface, start at the bottom of the wall and work up with an overlapping horizontal spray pattern to ensure run down of 6-8 inches. Take special care to saturate mortar joints. Do not stop or interrupt the application in the middle of the wall. Stop application only at expansion joints, walls or breaks defined with masking tape.

Properties of Okon Penetrating Silane Siloxane Sealer S-20

Manufacturer Rust-Oleum
Resin Type Silane / Siloxane
Color Colorless
Solvents Water
Volatile Organic Compounds <50 g/l (0.42 lbs./gal.)
Application Parameters 45-90°F (7-32°C) <85% Relative Humidity
Dry Times at 70-80°
(21-27°C) and 50% RH
Wet-on-wet, if required to Re-Coat
8 Hours to Foot Traffic
24 hours to Vehicle Traffic
Protect From Rain 24 hours
Protect From Dew 12 hours
Shelf Life 12 months unopened in protected storage.
Flash Point >200ºF (93ºC)
Safety Information For additional information, see MSDS
Technical Data Sheet Click here