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3M 740 UV polymer adhesive sealant 10 oz cartridge gray

3M

3M 740 UV Polymer Adhesive Sealant 10 oz Cartridge Gray

SKU CH-PQ2G-X8CQR

UV-resistant polymer sealant stays flexible from -40 °F to 194 °F, cures in one day and meets ASTM C661 and D412 standards

  • Paintable finish allows colour matching
  • UV resistant polymer withstands sunlight exposure
  • Flexible seal handles joint movement
  • Works on fibreglass, metal, plastic and wood
  • Full cure in one day for quick project completion

3M 740 UV Polymer Adhesive Sealant 10 oz

This gray polymer adhesive sealant comes in a 10 oz cartridge for multipurpose bonding and sealing tasks. It suits automotive, marine and general maintenance jobs where a flexible, paintable joint is required. The product meets ASTM C661 and ASTM D412 standards. It offers ultraviolet resistance for exterior durability.

Cartridge application and cure schedule

The cartridge fits standard caulking guns for straightforward dispensing. A working time of 1 hour allows tooling before the sealant skins over. Full cure requires 1 day at room temperature. Low temperatures near -40 degrees F extend cure time, while surfaces above 194 degrees F exceed the rated performance range. Inadequate surface cleaning is the most common cause of adhesion failure.

Surface and environment checklist

Verify that substrates are fiberglass, metal, plastic or wood, as listed in the specifications. Confirm the service temperature will stay between -40 degrees F and 194 degrees F. Ensure the joint design can accommodate 300 percent elongation without cohesive failure. Check local regulations for the 22 g/L VOC content if indoor air quality rules apply.

Highlights

  • Paintable finish allows colour matching
  • UV resistant polymer withstands sunlight exposure
  • Flexible seal handles joint movement
  • Works on fibreglass, metal, plastic and wood
  • Full cure in one day for quick project completion

Specifications

Brand3M

Questions about this item

How can I verify the 3M 740 UV sealant has cured properly after one day?

The sealant reaches full cure in one day at room temperature; once cured it remains flexible with 300 percent elongation and resists ultraviolet exposure on fiberglass, metal, plastic and wood surfaces.

What comes in the package and what additional items are needed for application?

The package contains one 10 oz gray cartridge of polymer-based adhesive sealant; a standard caulking gun and surface-cleaning supplies must be purchased separately to apply it.

Which version should I choose for joints that must stay flexible between -40 °F and 194 °F?

The 740 UV formulation meets ASTM C661 and ASTM D412, offers 300 percent elongation and a 22 g/L VOC content, making it the correct choice for that temperature range.

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