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 Model Number |
Surtek PU-355 |
Description
Surtek PU-355 is a high-quality non-sag one component polyurethane adhesive sealant specially designed for aftermarket. It cures on exposure to atmospheric humidity to form a durable elastomer.
Advantages
� One component, easy to use;
� High elasticity;
� Fast curable;
� Good adhesion without primer;
� Resistant to ageing and weathering;
� Solvent free, non-corrosive
Technical Data
Chemical base Polyurethane
Color Black
Density (DIN 53479) 1,22 ± 0,04 kg/l
Stability (non-sag properties) Very good
Cure mechanism Moisture-curing
Tack-free time* 30 Min. approx.
Rate of cure* 4 mm approx. per 24 hrs
Shrinkage (DIN 52451) 5%
Shore A hardness (DIN 53505) 50 approx.
Tensile strength (DIN 53504) 4.5 MPa approx.
Elongation at break (DIN 53504) > 400%
Tear strength (DIN 53515) > 8 N/mm
Tensile-shear strength (EN 1465) for a 4 mm applied thickness > 2 MPa
Glass transition temperature (DIN 53445) -50°C, approx.
Service temperature (continuous)
Short �term (up to 48 hrs) -40°C to +90°C
140°C
Shelf life (storage below 25°C) 9 months
*= at 23°C and 50% relative humidity
Application
Surtek PU-355 is suitable for the windshield replacement, or bonding/sealing of a variety of materials for vehicle body in aftermarket.
Instruction
Glass reinstallation as an example.
1. Remove windshield wiper arms and trim necessary to expose the entire perimeter of glass.
2. Clean dirt and debris from around the pinchweld area before cutting out the glass and again after the glass is cut out to minimize contamination.
3. Cut into existing urethane around entire perimeter of glass with a utility knife. Cut as close to edge as possible.
4. Cut out glass with appropriate removal tools keeping as close to the glass as possible. Remove the glass and repeat Step 2.
5. Dry set the glass. Align for uniform fit and adjust setting blocks as needed for best fit, to allow for sufficient bonding of urethane, make sure there is a MINIMUM of 1/4 inch of glass, in addition to the space that will be taken up by any dam material, around the entire perimeter of the glass. Mark location by applying masking tape to windshield and car body. Slit tape at edge of glass. Remove windshield.
6. Remove major portion of old urethane adhesive from the pinchweld. Use a razor blade knife or utility knife to prevent scraping the paint off the pinchweld and exposing bare metal. NOTE: On urethane installations, it is recommended that a thin film of the old urethane be left on the pinchweld and fresh urethane bonded to remaining film. When removing butyl tape or unknown material, remove all old material from pinchweld before applying fresh urethane.
7. Prime any bare metal scratches and repaired area if necessary with the paint primer and allow to dry for ~1 minutes.
8. Clean inside surface of glass if necessary with glass activator taking care to clean surface where the urethane bond will be made.
9. Apply glass primer if necessary over the primed bond area of glass. Allow primer to dry for ~1 minutes.
10. Apply appropriate size dam material to inside edge of pinchweld.
11. Cut tip to desired shape and size large enough to be slightly higher than the dam material. A triangular shaped notch will provide the desired bead shape and height. A height of 1/2 to 9/16 inch and a 1/4 -5/16 inch base is suggested.
12. Apply Surtek PU-355 directly onto the remaining OEM urethane film, behind and contacting the dam material.
13. Position the glass by aligning the masking tape on the glass and car body. Press glass in place to assure complete contact with dam material and urethane adhesive.
14. Paddle squeeze out around edge of glass if possible.
15. Remove masking tape alignment strips.
16. Replace moldings, windshield wipers and other trim removed in Step 1.
17. Clean any excess urethane with adhesive cleaner (non-alcohol).
Packaging
� 310ml cartridge;
� Flexible Package: 300ml, 400ml, 600ml;
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