3M Polyurethane Adhesive Sealant 560, Black 10.5 oz Cartridge — Moisture-Cure, Permanently Elastic

3M 560 is a one-component, moisture-curing polyurethane adhesive sealant that creates a permanently elastic, high-strength black bond from a 10.5 fl oz cartridge.

Designed for demanding construction and repair tasks, this polyurethane sealant combines flexibility with robust mechanical properties to join and seal a wide range of substrates. The paste-formulaton dispenses from a standard cartridge, cures to a Shore A 55 elastomer in about 24 hours, and delivers strong tensile and shear performance. It resists movement and maintains adhesion across the product's operating range when applied at recommended temperatures.

How does 3M 560 perform on different materials and joints?

3M 560 bonds to many common construction and mechanical substrates, offering an elastic seal that accommodates joint movement. It is suitable for gaps where flexibility and strength are required rather than rigid structural bonding.

• Effective on metals, painted surfaces, concrete, and many plastics when surfaces are clean and dry
• Forms a permanently elastic joint to absorb vibration and thermal expansion
• Shear strength around 145 psi and tensile strength up to 580 psi for reliable hold
• Best applied in joints within the +41°F to +95°F application range

How do I use and cure the cartridge for best results?

Apply 3M 560 with a standard caulking gun from its 10.5 fl oz cartridge. The sealant is moisture-cure, so it skins and crosslinks as moisture is absorbed; full set occurs within roughly 24 hours under typical conditions.

• Cut nozzle tip to desired bead size and puncture inner seal before loading cartridge
• Tool beads promptly for smooth finish and improved substrate contact
• Allow about 24 hours to develop a permanent elastic bond; curing rate varies with humidity and temperature
• Store unopened cartridges below 77°F and use within 12 months of purchase

What environmental and mechanical limits should I consider?

Work within recommended temperature limits and expect the cured sealant to perform up to moderate temperatures. 3M 560 is not designed for continuous exposure above its maximum operating temperature.

• Application and minimum operating temperature: +41°F; maximum operating temperature: +95°F
• Not regulated as hazardous for shipping when properly packaged
• Shelf life of 12 months when stored as directed (below 77°F)
• Not intended for prolonged immersion or where chemical resistance is critical without testing

Who is this for? 3M 560 is aimed at contractors, fabricators, maintenance professionals, and serious DIYers who need a durable, permanently elastic polyurethane sealant in a convenient cartridge. It is ideal for sealing and bonding applications that require good mechanical strength, flexibility, and a black finish—especially where vibration, thermal cycling, or some joint movement will occur. For jobs outside the listed temperature or chemical exposure limits, test adhesion and performance first or consult product data for alternatives.