3M 7100039257 Scotch-weld Pr Gel Instant Adhesive 300g

Product Description

The 3M 7100039257 is a high-viscosity instant adhesive gel formulated for bonding plastics, rubber, and other difficult-to-bond substrates. Sold under the Scotch-Weld Plastic Rubber PR Gel line, this product is designed for applications where standard cyanoacrylate adhesives fall short. Its gel consistency resists dripping on vertical surfaces and provides gap-filling capability where substrate surfaces are not perfectly flush. The clear formulation leaves a low-visibility bond line. At 300 grams net weight, this size suits production environments or high-volume repair work where smaller tubes create unnecessary downtime.

This adhesive is suited for trade and industrial applications involving EPDM gaskets, nylon fittings, rubber seals, and plastic components. Common use cases include HVAC equipment assembly, plumbing fixture repair, and electrical enclosure bonding where a fast-cure, structural adhesive is required. The gel formula is particularly useful when working overhead or on porous surfaces that would absorb a thinner adhesive before adequate contact is made.

Key Features

• Very high viscosity gel resists dripping and running during application
• Formulated for difficult-to-bond substrates including EPDM and nylon
• Gap-filling capability accommodates minor surface irregularities
• Clear cure color for a clean, low-visibility bond line
• 300 gram container suited for production or high-frequency repair use
• Instant adhesive chemistry delivers fast fixture time without external clamping

Compatibility

Designed for bonding plastics, rubber, and similarly difficult substrates including EPDM and nylon. Suitable for use across HVAC, plumbing, electrical, and general industrial assembly and repair applications.

Installation Notes

Apply in a well-ventilated area as cyanoacrylate-based adhesives release vapors during cure. Surfaces should be clean, dry, and free of oils or contaminants before application. Avoid skin contact and eye exposure; keep appropriate personal protective equipment on hand. Do not use on polyethylene, polypropylene, or PTFE surfaces unless confirmed compatible by testing.

Technical Specifications

• Net Weight: 300 grams
• Package Weight: 1.06 pounds
• Color: Clear
• Viscosity Type: Gel (very high viscosity)
• Unit of Measure: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100039257