1-C Polyurethane Adhesive Sealant for Aftermarket

• CAS No.: 63439-95-2
• Molecular Principal Chain: Carbon Chain Polymer
• Color: Black
• Chemical Base: Polyurethane
• Density: 1.30±0.05 Kg/L
• Non-Sag Properties: Good
• Model NO.: Surtek 3355
• Cure Mechanism: Moisture-Curing
• Tack-Free Time: 20~60 Min
• Rate of Cure: ≥3 mm/24hr
• Shore a Hardness: 60±5
• Shear Strength (Without Primer): ≥2 N/mm2
• Tensile Strength: ≥5 N/mm2
• Elongation at Break: ≥400%
• Tear Strength: ≥10 N/mm
• Glass Transition Temperature: -45°c Approx.
• Service Temperature (Continuous): -40°c to +90°c
• Short - Term (up to 48 Hrs): 130°c
• Transport Package: 310ml Cartridge, 400ml, 600ml Sausage
• Specification: SGS
• Trademark: Surtek
• Origin: China
• HS Code: 3506100090
• Production Capacity: 72000000PCS/Year

Product Description

Surtek 3355

1-C Polyurethane Adhesive Sealant for Aftermarket

Description
Surtek 3355 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; Non sagging;
Fast cure;
Good adhesion without primer; Resistant to aging and weathering.

Technical Data

Chemical base	Polyurethane
Color	Black
Density (DIN 53479)	1.30±0.05 kg/l
Non-sag properties	Good
Cure mechanism	Moisture-curing
Tack-free time*	20~60 min
Rate of cure*	≥3 mm/24hr
Shore A hardness (DIN 53505)	60±5
Shear strength (without primer)	≥2 N/mm^2
Tensile strength (DIN 53504)	≥5 N/mm^2
Elongation at break (DIN 53504)	≥400%
Tear strength (DIN 53515)	≥10 N/mm
Glass transition temperature (DIN 53445)	-45°C approx.
Service temperature (continuous)	-40°C to +90°C
Short - term (up to 48 hrs)	130°C

*= at 23°C and 50% relative humidity

Application
Surtek 3355 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 minute.
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 3355 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, 400ml/600ml sausage


Storage and Shelf Life
When stored at the recommended conditions in original, unopened containers, this product has a shelf life of 9 months (cartridge), 6 months (sausage).
The shelf life of polyurethane sealant is related to the temperature and humidity of the environment. The recommended storage temperature is 5-25°C , humidity is <50% RH. It is strictly prohibited that the transportation or storage temperature is over 30°C or the humidity is over 80% RH. And high-temperature container transportation is prohibited as well. In the long-time high temperature and high humidity storage environment, the product is easy to get viscous, extrusion will be deteriorated and shelf life will be shortened.

Caution
The product contains isocyanates, which may cause skin and eye irritation. Avoid eye-contacting and ingestion.

NOTE
The information and recommendations related to the application and end-use of COMENS' products are given in good faith based on COMENS' current knowledge and experience of the products when properly stored, handled and applied under normal conditions. This information must on no account be used as a substitute for necessary prior tests which alone can ensure that a product is suitable for a given use, due to the practical differences in materials, substrates and actual site conditions. Users are requested to check that they are in possession of the latest version of this document and COMENS' is at their disposal to supply any additional information.