A sealer is a type of adhesive that helps protect surfaces from moisture and other elements. They come in two main types: penetrating and non-penetrating. Penetrating sealers are most often used in construction, automotive, and industrial settings where water, oil, gas, or other contaminants can penetrate surfaces. 

Penetrating sealers are designed to go deep into the surface they’re sealing, which means they can fill in cracks and holes, stop water leakage, and even restore old finishes. They’re also best for use on porous surfaces like wood or drywall because their adhesive will spread through the pores and bond to the substrate. To buy penetrating sealers, you may visit this site. 

Non-penetrating sealers are less intense than penetrating sealers, but they still offer many of the same benefits. They work great on flat surfaces like walls or floors because their adhesive won’t travel as far into the substrate. Plus, they have a longer shelf life so you can apply them multiple times without having to worry about them losing their effectiveness. 

Which one should you buy? That depends on your specific needs! If you only want to protect a flat surface from moisture and dust buildup, a non-penetrating sealer will be just fine. If you need to repair or restore a surface, a penetrating sealer is a way to go.