Selleys Professional S301 is a high-performance 100% acetoxy silicone sealant that adheres to brick, steel, tiles, and glass, forming a permanently flexible waterproof seal.


• Mould and fungus resistant
• UV and heat resistant
• Non-yellowing
• Indoor and outdoor use
• Rapid curing
• Low VOC – meet Green Building Council of Australia VOC limits
• High flexibility

Packaging   Size Colour
Cartridge 300 g Clear
Cartridge 300 g White


Perfect for use on or around kitchens and bathrooms, windows/window frames and gaskets on refrigerators. It is suitable for use on materials such as glass, brick, steel and tiles.

Property Typical Result
Technology Acetoxy cure
Colour Clear, White
Density 1.02
Working time 5-10 min
Tack-Free Time 12 min
Cure Rate 1-4 mm/24 hour

Tensile Strength


0.9 MPa
Shore A Hardness 24

Elonggation at Break


0.4 MPa

Movement Capabillity

ISO 9047

+/- 25%
Service Temperature -60'C to + 120'C

Surface Preparation

All surfaces must be clean, dry, and free from dirt, dust, oil and loose rust. Clean the surface with mineral turpentine and wipe dry with a clean rag before applying the sealant.

Directions for Use

• Cut tip of cartridge and cut nozzle at 45° angle to suitable size opening. Fit nozzle to the cartridge. Place cartridge into caulking gun.
• Hold caulking gun at 45° angle and gun sealant ahead of nozzle ensuring product is pushed into joint.
• For a smooth finish, tool with a spatula. Excess sealant must be cleaned up before the sealant skins in 5-10 minutes. Wipe excess away with a cloth dampened in mineral turpentine.


• Cannot be painted over
• Not suitable for aquariums or potable water
• Not suitable for concrete, cement products, zinc or metals containing copper.
• Not recommended for use in below waterline applications

Clean up

Clean all excess wet sealant from equipment with mineral turpentine. Cured sealant is very difficult to remove and must be abraded or trimmed with a knife.