653 Polyurethane Sealant 653 Polyurethane Sealant is used for the sealing of the joints of the refrigeration compartment, machinery, airport runway, superhighway, and construction. 1. Description 653 Polyurethane Sealant can strongly stick to most traditional building materials. 2. Application areas It can be used for airproofing and bonding in all kinds of building materials such as concrete, wood, aluminum, painted metal, polyester, glass, PVC, concrete tile, earthen brick, and chinaware. 3. Technical Parameters ITEM 653 Appearance White, grey, black, cream Surface Dry Time(min) 30-60 Solidifying Rate(mm/24h) ¡Ý3.0 Density(g/cm³) 1.2¡À0.05 Solid Content(%) ¡Ý95 Hardness(HA) ¡Ý35 Breaking Strength(Mpa) ¡Ý2.0 Breaking Elongation(%) ¡Ý400 Shearing Strength(Mpa) ¡Ý1.6 Tearing Strength(N/mm) ¡Ý7.5 Stability very good Resistance to low temperature¡ãC -45¡ãC No Fracture Application temperature¡ãC 5-35 Service temperature(continuous)short term (up to 8 hrs) -40-90  120 4. Usage The application temperature should be between 5¡ãC and 40¡ãC.Spray the glue on the required area by using either manual glue gun or air-driving glue and the jointing and should clean and dry. After that, please make sure the joint area full of sealant and make it nice. 5. Package and storage 300ml/tube, 48 tubes/carton; 600ml/tube, 20 tubes/carton; 5 & 55 gallons steel keg. Stored under temperature between 5¡ãC to 25¡ãC, and shelf life is 6 months.