Positive Bond on Contact Unlimited Shelf Life Clean Interior Sightline CRL 3M Windo-Weld Ribbon Sealer is a tape-type sealer used in the replacement of windshields and backlites on all butyl set car and truck models. It supports the glass and seals on contact. CRL 3M Windo-Weld Ribbon Sealer forms a water tight seal when used with CRL Butyl Primer CRL1106. Additional Product Information: 15 foot (45 m) per roll, 6 rolls case. Material Safety Data Sheet3M