3M 7100200170 Polyurethane Construction Sealant 525 Gray

Product Description

The 3M 7100200170 is a single-component polyurethane elastomeric construction sealant that cures by reacting with atmospheric humidity. Once cured, it forms a flexible, resilient joint with strong adhesion to most common building materials. With an elongation rating of over 600 percent and a Shore A hardness of 25, this sealant accommodates significant joint movement without cracking or pulling away from the substrate. Skin time is approximately 2 hours under standard conditions. It ships in a 10.5 fluid ounce cartridge compatible with a standard caulking gun. Licensed contractors and experienced tradespeople working in construction and building envelope applications are the primary installers.

This sealant is used to create flexible seals on heavy and light precast panel expansion joints. It also performs well on wood, aluminum, and PVC substrates, making it a versatile option for both interior and exterior construction sealing tasks. Typical applications include curtain wall assemblies, precast concrete panels, and general construction joint sealing where long-term flexibility and adhesion are required. It is suited to both residential and commercial construction projects.

Key Features

• Single-component formula cures with atmospheric humidity — no mixing required
• Elongation of over 600 percent accommodates significant joint movement
• Shore A hardness of 25 provides a soft, resilient cure
• Approximately 2-hour skin time allows working time for joint tooling
• Adheres to most materials including concrete, wood, aluminum, and PVC
• Gray color suits precast concrete and masonry applications

Compatibility

Designed for use on heavy and light precast panel expansion joints, wood, aluminum, and PVC substrates in general construction sealing applications.

Installation Notes

Application is typically performed by licensed contractors or skilled trades professionals working on building envelope and structural joint sealing. Before applying, ensure the substrate is clean, dry, and free of dust, oil, and loose material for proper adhesion. Apply using a standard caulking gun and tool the joint within the skin time window. Follow applicable local building codes and the manufacturer's surface preparation guidelines for best results.

Technical Specifications

• Sealant Type: Single-component polyurethane elastomeric
• Color: Gray
• Container Size: 10.5 fluid ounces
• Container Type: Cartridge
• Elongation: Over 600 percent
• Shore A Hardness: 25
• Skin Time: Approximately 2 hours
• Weight: 0.88 pounds
• UPC: 00048011628233

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100200170