3M 2104D Insulseal Compound 23.8 Oz

Product Description

The 3M 2104D is a ready-to-use insulating and sealing compound designed to fill, seal, and protect electrical and mechanical assemblies. Applied as a paste, it cures to form a flexible, moisture-resistant barrier that helps prevent corrosion and environmental ingress at wire entry points, conduit penetrations, and similar service openings. The 23.8 oz container gives service technicians enough material for multiple applications in a single visit. Electricians and maintenance crews working on commercial and residential electrical systems reach for this compound when a durable, conformable sealant is needed around conductors and enclosure penetrations.

This compound is suited for sealing conduit entries, junction box openings, and wire bundle pass-throughs in both indoor and outdoor installations. It performs in environments where moisture, dust, and mild chemical exposure are concerns. The paste consistency allows it to be tooled into irregular gaps and around grouped conductors without running or sagging during application, making it practical for overhead and vertical surfaces common in electrical and HVAC installations.

Key Features

• Ready-to-use paste formulation — no mixing required before application
• Flexible after cure, accommodating minor movement of conductors and substrates
• Moisture-resistant barrier helps protect against corrosion at penetrations
• Toolable consistency stays in place on vertical and overhead surfaces
• 23.8 oz container size supports multiple service calls per unit

Compatibility

Designed as an OEM-style sealing compound for use at electrical conduit penetrations, junction box entries, and wire bundle pass-throughs in residential and commercial installations.

Installation Notes

Installation is typically performed by licensed electricians or qualified maintenance technicians. De-energize all circuits in the work area before applying sealant at conduit or enclosure penetrations, in accordance with NEC lockout/tagout requirements. Clean the substrate of oil, loose debris, and moisture before applying the compound to ensure proper adhesion. Allow adequate cure time before restoring power or exposing the seal to standing water.

Technical Specifications

• Container Size: 23.8 oz
• Package Weight: 18 pounds
• Package Dimensions (L x W x H): 14.84 inches x 13.13 inches x 7.7 inches
• UPC: 05400711849

Standard Information

• Brand: 3M
• Manufacturer Part Number: 2104D