Seal-Tite is a silicone-based wax made for synthetic bowstrings. It has a silky feel and remains soft even in cold weather. Odorless, waterproof, and vegan, Seal-Tite is available in the standard tube applicator or in Bohning's unique box applicator made from 100% recycled plastic. Tube contains 28 grams of Seal-Tite. Certified Crossbow Compatible. Tech tips: Apply a small amount of Seal-Tite to nock shanks or pin bushing for easier insertion/indexing. Apply Seal-Tite to threads on screw-in points to help prevent them from loosening.