Mars 93520 Duct Seal Putty 1 Pound Gray Slug Box

Product Description

The MARS 93520 is a non-hardening duct seal putty packaged in a 1-pound slug box designed for use by HVAC technicians, electricians, plumbers, and refrigeration service professionals. This pliable, thumbable compound forms an airtight and watertight seal around conduit entries, junction box knockouts, pipe penetrations, and tubing openings. The gray-colored putty maintains flexibility and adhesion across variable temperature and environmental conditions without drying, cracking, or shrinking. Its reusable, non-curing formulation makes it suitable for both indoor and outdoor installations where long-term mechanical sealing is required.

The MARS 93520 is used across residential and commercial jobsites wherever conduit, pipe, or tubing passes through walls, floors, or enclosure knockouts. Electricians apply it around conduit entries into panels and junction boxes to block air and moisture infiltration. HVAC and refrigeration technicians use it to seal refrigerant line and drain line penetrations. Plumbers rely on it to seal pipe entries through framing and masonry. The thumbable slug format allows quick, tool-free application directly from the box without measuring or mixing.

Key Features

• Non-hardening formulation stays pliable indefinitely after application
• Thumbable consistency allows direct hand application without tools
• Forms airtight and watertight seals around penetrations and conduit entries
• Suitable for HVAC, electrical, refrigeration, and plumbing applications
• Performs in both indoor and outdoor installations
• Slug box format delivers 1 pound of compound ready to use

Compatibility

Designed as a general-purpose sealing compound compatible with common conduit, pipe, and tubing materials used in HVAC, electrical, refrigeration, and plumbing installations.

Installation Notes

No power tools are required for application. Press the compound firmly into the opening or around the penetration by hand, ensuring full contact with surrounding surfaces for an effective seal. For electrical applications, installation must comply with applicable NEC requirements for conduit sealing at panel and junction box entries. Remove and repack any excess compound back into the slug box to preserve it for future use.