Minerallac 67740 Foam Conduit Piston 1/2 Inch

Product Description

The MINERALLAC 67740 is a 1/2 inch foam conduit piston designed to push wire and cable through conduit runs during electrical installation work. The piston attaches to the leading end of a wire pull, creating a snug foam seal inside the conduit that allows pulling tension to distribute evenly and reduces friction against the conduit wall. Electricians use this type of piston on both new construction and retrofit pulls where smooth, controlled wire feeding is required. At 0.030 pounds, it is a lightweight single-use or reusable aid suited for 1/2 inch trade-size conduit.

This foam conduit piston is sized for 1/2 inch conduit, the most common trade size in residential and light commercial electrical work. It is used by licensed electricians and electrical contractors pulling conductors through EMT, PVC, or flexible conduit systems. The piston is particularly useful on longer or more complex runs where wire bundles need a leading guide to prevent snags and reduce pulling force.

Key Features

• Sized for 1/2 inch trade-size conduit
• Foam construction conforms to conduit interior for a consistent lead fit
• Lightweight at 0.030 pounds for easy handling on the job
• Reduces friction and snag risk during wire pulls
• Compatible with common conduit types including EMT and PVC

Compatibility

Designed as an OEM-style wire-pulling accessory for use in 1/2 inch trade-size conduit installations.

Installation Notes

Installation is performed by licensed electricians in accordance with NEC requirements for the conduit system being served. De-energize any circuits associated with the conduit before beginning a wire pull. Attach the piston securely to the pull line or leading conductor before feeding it into the conduit. Do not force an oversized piston into the conduit, as this can damage the foam and reduce its effectiveness.

Technical Specifications

• Conduit Trade Size: 1/2 inch
• Material: Foam
• Weight: 0.030 pounds
• UPC: 08593767740

Standard Information

• Brand: MINERALLAC
• Manufacturer Part Number: 67740