Silicone Sealants

Silicone sealants are adhesives that are most often used to create a water or airtight seal in the joint between two surfaces. Silicone sealant has a gel consistency which cures by drying over a period of time, with the correct temperature and humidity. The cured product is a durable yet flexible, silicone rubber. You can learn more in our silicone sealant guide.


Why use a silicone sealant?
They are very easy to use and enable you to create a waterproof join with minimal effort. Silicone sealants are weatherproof and can withstand a wide range of temperatures. The sealants bond to many different materials, are long-lasting and do not promote mould growth.

Types of Silicone Sealants:
Silicone sealants come in a range of different colours such as black, grey, white and clear. They typically come in a cartridge or tube and many have a nozzle for precise bead application. There are squeeze tubes which are used by hand or rigid tubes for use with a sealant gun.

Most silicone sealant is multi-purpose and can be used for general applications and bonds with many materials. Sanitary silicone sealants are best for wet applications for example in bathrooms. This is because they are resistant against mould and mildew.

Other things to consider when purchasing a silicone sealant is whether it is suitable for indoor or outdoor use, is it mould resistant, or whether you have any specific operating temperatures that could affect the efficiency of the silicone. Both heat and cold can affect silicone sealant and compromise its ability to seal.

What are they used for?
Silicone sealants are commonly used in both domestic and commercial environments. They are an essential DIY material for use as a bathroom sealant or in window construction. Other applications include:
Shower sealing
Window seal
Door seal
Cooker seal
Fridge seal
Plumbing joints
Electrical repair
Wire entry seal
Junction protection

...
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Viewing 1 - 20 of 55 products
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Description Price Colour Application Package Size Package Type Minimum Operating Temperature Food Processing Safe Maximum Operating Temperature Chemical Type Physical Properties Trade Name Cure Time Product Form Chemical Composition Dielectric Strength
RS Stock No. 555-588
BrandRS PRO
£4.65
Each
Units
Transparent Electrical 100 g Tube -60°C No +180°C Acetoxy, Elastomer Acetoxy Cure - 7 (23 °C) days Paste - 21.6kV/mm
RS Stock No. 550-230
BrandRS PRO
£8.59
Each
Units
Transparent Electrical 310 ml Cartridge -60°C No +180°C Acetoxy, Elastomer Acetoxy Cure - 7 (23 °C) days Paste - 21.6kV/mm
RS Stock No. 494-102
BrandRS PRO
£12.93
Each
Units
White Copper, Semiconductor Junction Protection 310 ml Cartridge -40°C No +150°C Elastomer Neutral Cure, Non-Corrosive - 7 (23 °C) days Paste Stearic Acid -
RS Stock No. 512-799
BrandRS PRO
£7.37
Each
Units
White Jointing 310 ml Cartridge -50°C No +100°C Elastomer Low Modulus, Neutral Cure - 7 (23 °C) days Paste - -
RS Stock No. 512-783
BrandRS PRO
£7.37
Each
Units
Black Jointing 310 ml Cartridge -50°C No +100°C Elastomer Low Modulus, Neutral Cure - 7 (23 °C) days Paste - -
RS Stock No. 494-118
BrandRS PRO
£7.07
Each
Units
White Copper, Semiconductor Junction Protection 100 g Tube -40°C No +150°C Elastomer Neutral Cure, Non-Corrosive - 7 (23 °C) days Paste Stearic Acid -
RS Stock No. 459-0232
Mfr. Part No.6011088
£8.72
Each
Units
Transparent Refrigeration Units 310 ml Cartridge -50°C Yes +150°C Acetoxy High Modulus 786 24 (2.5 mm) h Paste - -
RS Stock No. 423-6758
Mfr. Part No.229293
BrandLoctite
£11.43
Each
Units
Transparent Sealing 100 ml Tube -60°C No +250°C Acetoxy High Elongation, High Tensile Strength, Shore Hardness Loctite 595 - Paste - -
RS Stock No. 283-426
Mfr. Part No.158
£19.25
Each
Units
Black Bonding, Sealing 75 ml Tube -60°C No +300°C Elastomer High Temperature Silcoset 158 7 (25 °C) h Paste - -
RS Stock No. 459-0210
Mfr. Part No.6011086
£7.60
Each
Units
Transparent Glass, Sealing, Waterproof 310 ml Cartridge - No - Acetoxy High Elasticity 781 1 (3 mm day@ 23 °C), 3 (5 mm days@ 23 °C) Paste - -
RS Stock No. 705-9030
Mfr. Part No.3307271
£8.53
Each
Units
White Low Temperature, Refrigeration Units 310 ml Cartridge - No - Alkoxy High Elasticity, Low Modulus, Low Odor 798 1 (2 mm day@ 23 °C), 3 (4 mm days@ 23 °C) Paste - -
RS Stock No. 341-0961
Mfr. Part No.91361
BrandBostik
£6.66
Each
Units
Transparent Exterior, Sealing 300 ml Cartridge -50°C No +180°C Acetoxy, Elastomer Acetoxy Cure, High Modulus Bond-Flex 100HMA 24 (2 mm h @ 23 °C) Non-Slump Paste - -
RS Stock No. 459-0226
Mfr. Part No.6011087
£8.72
Each
Units
White Refrigeration Units 310 ml Cartridge -50°C No +150°C Acetoxy High Modulus 786 24 (2.5 mm) h Paste - -
RS Stock No. 561-160
Mfr. Part No.2939193
£6.96
Each
Units
White Sealing 310 ml Cartridge -40°C No +150°C Acetoxy Non-Flammable Geobond Marine 24 (3 mm h @ 23 °C) Paste - -
RS Stock No. 561-176
Mfr. Part No.2939126
£4.62
Each
Units
Transparent Insulation, Pipe Sealing, Sealing, Trunking Sealing 78 g Injector -40°C No +150°C Acetoxy Non-Flammable Geobond Marine 24 (3 mm h@ 23 °C) Paste - -
RS Stock No. 740-1362
Mfr. Part No.4068751
£7.23
Each
Units
Transparent Glass, Waterproof 310 ml Cartridge - No - - High Elasticity, Low Modulus, Low Odor, Non-Corrosive 799 1 (2.8 mm day@ 23 °C), 3 (4.3 mm days@ 23 °C) Paste - -
RS Stock No. 423-6786
Mfr. Part No.229227
BrandLoctite
£11.43
Each
Units
Black Sealing 100 ml Tube -60°C No +250°C Acetoxy High Elongation, High Tensile Strength, Shore Hardness Loctite 5940 - Paste - -
RS Stock No. 423-6938
Mfr. Part No.6011030
BrandGeocel
£7.40
Each
Units
Red Sealing 310 ml Cartridge -40°C No +250°C Acetoxy - Plumba Flue - Putty - -
RS Stock No. 529-126
Mfr. Part No.6001570/C05
BrandGeocel
£5.16
Each
Units
Transparent Asphalt, Glass, Masonry, Metal, Plastic, Stone, Wood 310 ml Cartridge -40°C No +80°C Elastomer High Elasticity, Mildew Resistant All Weather Seal 5 days Paste - -
RS Stock No. 258-5979
Mfr. Part No.LOCTITE® SI 5368
BrandLoctite
£11.80
Each
Units
Black Bonding 310 ml Cartridge -60°C No +250°C Acetoxy - Loctite 5368 - Paste - -
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