Putty-style sealant, also known as MASTIC (6 letters), is a type of adhesive material used to fill gaps and seal joints in construction and repair projects. It is typically made from a combination of organic materials such as linseed oil, rosin, and limestone, and is often used to seal windows, doors, and other openings. Putty-style sealant is highly durable and can withstand extreme temperatures and weather conditions.