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Explore Different Types of Clear Silicone Sealant

Jul 21,2021 | Views: 839

Silicone sealants come in a range of different colors, 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 that are used for application by hand or rigid tubes for use with a sealant gun. People often confuse it with the Polysulfide sealant. However, it is not the case!

Major Categories of Clear Silicone Sealant

Silicone sealants typically fall into one of two main categories, namely neutral cure, and acid cure (or acetoxy) variants. The latter is great for non-porous surfaces like glazed tiles and glass, but you’ll probably want to stick to neutral-cure silicone for working with wood or scratchable plastics and metals, as the acidic variants can cause corrosion or damage when applied directly to less suitable materials.

1: High-molds Sealants

High-modulus sealants tend to cure faster and harder and emit a slight vinegary smell as they cure. Most acetoxy silicone sealants are high modulus, while most neutral cure varieties will typically be low modulus, with very little odor and a slightly slower curing process resulting in a more flexible, elastic seal.

2: Multi-Purpose Sealants

The majority of clear silicone sealant products tend to be multi-purpose. They can normally be used in a wide variety of general applications and are suitable for creating bonds with many surface materials. Sanitary silicone sealants are best for wet applications, for example, in bathrooms, because they are more stubbornly resistant against mould and mildew growth.

3: Other Types of the Sealants

Many different types of mastics, glues, and caulks are advertised as having chemical formulas that support specific usage scenarios. Popular examples are waterproof silicone sealant, quick-drying silicone sealant, and high elongation variants. Polysulfide sealant is also a popular form of sealant.

Key Aspects of Purchasing a Silicone Sealant

A key aspect that you should always consider when purchasing caulks and mastics is whether or not a given product is explicitly listed as being an indoor/outdoor silicone sealant. You should also bear in mind any specific operating temperature ranges included in the product instructions.

While clear silicone sealant broadly tends to be a strong performer in both warmer and colder climates (especially once cured), the presence of excessive heat or cold during the actual application process itself can sometimes affect an adhesive’s ability to cure evenly and neatly around a join. This is a particularly important consideration for any seals that need to remain completely waterproof or airtight.

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