Windshield & glass sealants

Auto glass and headlight sealants are used at repairing and mounting of car windows and optical elements. These products provide not only reliable fixing of the parts, but sealing of their joints. Use of the sealants allows to avoid ingress of moisture and dust into the headlights or passenger compartment.

Auto glass and headlight sealants types

According to the consistency the compounds can be:

• Liquid. They are easy-to-use and do not require preliminary mixing of components. They are sold in bottles, tubes and aerosol spray cans.
• Pastelike. As a rule, they need to be diluted with special substance, which is sold in a kit, before using. They are mostly produced in cans.

Also the products differ from one another by the active ingredient:

• Silicon. These are multi-purpose mixtures, which can be used for lights, headlights, windows, hatches and some other car components. Small cracks can be repaired with the help of these products. The sealants preserve their operational properties at the temperature up to +250 оС.
• Polyurethane. They have excellent adhesive strength and water-resistance properties. It is not recommended to use these products for dismountable elements.

Composition

Most of modern sealants are made on the basis of oligomers and polymers. For example, in silicon products it is resin based on the organosilicon compounds. As a rule, these products also contain hardeners. And the sealants, which should preserve the elasticity after hardening, often include vulcanizing components.

Tips on auto glass and headlight sealants use

Residues of the old sealant should be removed before application of the product. The surfaces which are to be treated, are degreased, and, in some cases, such as, for instance, during car window installation, a primer is used. The application procedure of sealants can vary in accordance with the compound type, that is why you need to follow the manufacturer’s instructions. Take into account the fact that even slightest variations of temperature and humidity level can cause negative impact on seams durability during product hardening.

Buycarparts.co.uk professional assistance

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