Cherne 273348 Mechanical Pipe Plug 4 in

Mechanical Pipe Plug for 4-inch pipes

The Cherne 273348 mechanical pipe plug is designed to seal 4-inch diameter pipes during testing or maintenance. It fits pipe inside diameters from 3.78 in to 4.3 in and uses an expandable nitrile rubber element tightened by a stainless steel mechanism. The unit stands 3.25 in tall and includes no bypass or water fill port.

Suited for pressure testing and temporary blockage

This plug serves contractors and maintenance crews who need a reusable mechanical seal for 4-inch lines. It handles up to 2 psi of air back pressure or 5 ft of water head. Buyers needing a bypass connection to divert flow, a padlockable security feature, or an integrated water fill hose should look elsewhere.

Capacity covers standard 4-inch pipe range

The plug comfortably seals pipes within the stated 3.78 in to 4.3 in inside diameter range. It runs out of sealing ability beyond those diameters or when back pressure exceeds the 2 psi air or 5 ft water limits. No larger or smaller pipe sizes are accommodated by this model.