500-Series Polyurethane Products: 3M Polyurethane Construction Sealant 525 3M Polyurethane Sealant 540 3M Polyurethane Adhesive Sealant Fast Cure 550 3M Polyurethane Adhesive Sealant 551 3M Polyurethane Adhesive Sealant 560 Technical Data July 2014 Product Description 3M 500-Series Polyurethane Construction Sealant, Polyurethane Sealant and Polyurethane Adhesive Sealant products are one component, moisture curing products which form permanent elastic bonds. They bond to a wide variety of materials including plastics, metals, fiberglass, and wood. They are formulated to have a wide variety of Shore A hardness, open times, and performance parameters to meet many application needs. Features/Advantages 3M 500-Series Polyurethane Products: Feature 525 540 550FC 551 560 Advantage One component/moisture X X X X X No mixing curing Simplifies production Bonds dissimilar materials X X X X X Gives design flexibility Adheres to a wide variety X X X X X Multiple uses and design of materials flexibility Permanently elastic X X X X X Provides long lasting bonds Fast curing X X X Speeds production Paintable after cure X X X X X Improves appearance High tensile strength X X X X X Gives high strength bonds Replace rivets and mechanical fasteners Low modulus / X X Ideal for sealing Low Shore A Hardness Good for bonding material with different coefficients of thermal expansion High modulus / X X X Ideal for bonding High Shore A Hardness Gives high strength bonds 3M 500-Series Polyurethane Products: Polyurethane Construction Sealant 525 Polyurethane Sealant 540 Polyurethane Adhesive Sealant Fast Cure 550 Polyurethane Adhesive Sealant 551 Polyurethane Adhesive Sealant 560 Application Ideas 3M 500-Series Polyurethane Products: Market 525 540 550FC 551 560 General Industrial X X X X X Construction X X X X X Marine X X X Specialty Vehicle X X X X Seals expansion Seals lap seams Bonds and seals Bonds and seals Bonds floors, joints, construction on trucks, trains, many diverse many diverse exterior / interior panels, roofing trailers, etc., materials. Marine materials. panels, roofs for tiles. Bonds well and construction deck to hull 550-type adhesive trucks, trains, to concrete. panels. bonding. sealant with longer trailers, vans, etc. open time for use in large surface area applications. Note: The following technical information and data should be considered representative Technical Data or typical only and should not be used for specification purposes. 3M 500-Series Polyurethane Products: Properties 525 540 550FC 551 560 90 - 150 60 - 90 50 - 90 2 - 3 50 - 60 Tack-Free Time 73F and 50% minutes minutes minutes hours minutes Relative Humidity Rate of Cure 73F and 50% 1/8 (3 mm) 1/8 (3 mm) 3/16 (4 mm) 3/16 (4 mm) 3/16 (4 mm) per 24 hour per 24 hour per 24 hour per 24 hour per 24 hour Relative Humidity Shore A Hardness (ASTM C661) 25 40 45 45 55 Tensile Strength (ASTM D412) 400 psi 300 psi 450 psi 450 psi 580 psi (2.6 MPa) (2.1 MPa) (3.1 MPa) (3.1 MPa) (4 MPa) Elongation at Break (ASTM D412) >600% >600% >600% >600% >300% 100% Modulus (ASTM D412) 75 psi 125 psi 150 psi 190 psi 145 psi (0.5 MPa) (0.9 MPa) (1.0 MPa) (1.3 MPa) (1.0 MPa) Service Temperature -22F - 176F -40F - 194F -40F - 194F -40F - 194F -40F - 194F (-30C - 80C) (-40C - 90C) (-40C - 90C) (-40C - 90C) (-40C - 90C) Specific Gravity 1.17 1.17 1.17 1.17 1.17 Consistency Medium paste Medium paste Medium paste Medium paste Medium paste VOC Content 35.1 g/l 53.7 g/l 29.0 g/l 36.5 g/l 56.0 g/l - 2 -