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The MINERALLAC 67746 is a foam conduit piston designed for use in conduit sealing and wire-pulling applications in electrical installations. This piston is sized for 1-1/4 inch conduit and serves as a plug or pulling aid within the conduit bore. Electricians use foam conduit pistons to seal conduit ends against moisture, debris, and pests, or to push pull lines and wire through conduit runs. At 0.04 pounds, the 67746 is a lightweight consumable that fits standard 1-1/4 inch trade-size conduit.
The MINERALLAC 67746 is suited for residential and commercial electrical work wherever 1-1/4 inch conduit is installed. Common applications include sealing spare or empty conduit runs in panel feeders, underground duct banks, and exposed raceway systems. Electrical contractors and maintenance electricians keep foam conduit pistons on hand as a low-cost solution for conduit end protection and pull-line launching during rough-in and finish electrical work.
Designed for use with standard 1-1/4 inch trade-size conduit in typical electrical raceway installations.
Installation is performed by licensed electricians in accordance with applicable NEC requirements. De-energize and verify the circuit is safe before working inside any conduit system connected to live conductors. Insert the foam piston by hand into the conduit end; no special tools are required. Inspect the conduit bore for sharp edges or debris before insertion to avoid tearing the foam.
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