Most of the products currently used are plastisol products, which have good thixotropy, can be squeezed, can be sprayed, and will not change color after the construction of the middle paint and topcoat. Weld seam sealant can prevent air, rain, and dust from entering the car, and plays an important role in sealing, rust prevention, and leakage prevention. The anti-stone impact coating on the bottom of the vehicle can resist the impact of sandstone on the bottom of the vehicle, improve the anti-corrosion ability, extend the life of the vehicle body, and reduce the noise in the vehicle.

Weather resistance Under outdoor working conditions, the sealant should have different levels of resistance to water, heat, cold, ultraviolet light, and sunlight, depending on its use. Compatibility and permeability can be combined with a sealant that is resistant to corrosion by any chemical agent. Due to the influence of other conditions on the sealant, the coordination of a sealant should take into account all aspects.

Sealant rheology Common sealants usually have two categories, namely non-contact denatured self-leveling and thixotropic non-collapse. The former can be leveled after application; while the latter is sometimes like a paste, can not be leveled, can be used on vertical surfaces and other parts.