Fillers and extenders are used in Adhesive and Sealant formulations to improve properties and lower cost. There is a wide variety of fillers and extenders in adhesives and sealants. Fillers can have a deep effect on cost, compounding characteristics, and final adhesive properties.

Adhesive and Sealant is a viscous material which after curing process changes into elastic rubber, it is used to provide a seal against air and gas leaks, and to reduce noise, dust, fire, fumes and leaks.

UNICARB NRS5000, that manufactures a range of products that improves the properties of these formulations Precipitated calcium carbonate, is used as a rheology modifier in a variety of sealants, especially in the formulations of PVC plastisol which are applied in the automotive industry. PCC is also used in other sealant formulations such as: Polyurethane, MS polymers, epoxy, etc. and as a chemical additive to add properties, the most notable being thixotropy.