3M 740
Harmonization Code : 3919.10.80 | Other self-adhesive plastic rolls not exceeding 20 cm wide.
Main features
- -40 to 90 deg C Range
- Paintable While Still Wet
- Dissimilar-Material Gap Filling
Product Description
3M Adhesive Sealant 740 UV is a one-component, moisture-curing silane-modified polymer adhesive sealant for bonding and sealing dissimilar materials in vehicle and architectural panel joints. The paste is applied at 5 to 35 deg C and has a typical tack-free time of 40 to 60 minutes at 23 deg C. It remains elastic after cure, with typical Shore A hardness 30 by ASTM C661 and 125% elongation at break by ASTM D412. Long-term temperature resistance spans -40 to 90 deg C for exposures of days or weeks. Water-based paint can be applied while wet after checking application-specific compatibility.
Key features
- 40 to 60-minute tack-free time: The typical interval applies at 23 deg C; moisture cure progresses separately at more than 3.5 mm per 24 hours at that temperature.
- Shore A 30 cured hardness: Typical ASTM C661 hardness accompanies 125% elongation at break by ASTM D412.
- Paintable while wet: Water-based coatings are compatible, but each paint should be checked in the intended application.
Applications
Panel sealing and bonding on trucks, trains, trailers, and specialty vehicles; architectural panels.
