Mars 69029103544 Black Square Countersunk Plug 2 in

Product Description

The MARS 69029103544 is a 2-inch black square countersunk plug used to cap open pipe ends, fittings, or ports in plumbing and mechanical systems. This plug seats flush against the mating surface using a countersunk profile, creating a secure, leak-resistant closure. It is a standard service and installation component handled by plumbers, HVAC technicians, and pipefitters during system assembly, pressure testing, and maintenance work.

This plug is suited for use in residential and light commercial piping applications where a clean, flush cap is required on an open 2-inch port or fitting. It is commonly installed during rough-in stages, system shutoffs, or whenever a pipe end must be temporarily or permanently sealed. The square drive countersunk design allows for positive tool engagement during installation and removal.

Key Features

• 2-inch size fits standard 2-inch pipe openings and fittings
• Countersunk profile seats flush with the mating surface for a clean finish
• Square drive head allows reliable tool engagement and positive torque transfer
• Black finish for identification and corrosion resistance in typical service conditions

Compatibility

Designed as an OEM-style replacement or direct-fit plug for standard 2-inch pipe fittings and ports in plumbing and mechanical piping systems.

Installation Notes

Installation is typically performed by a licensed plumber or pipefitter. Depressurize and drain the line before removing or installing any plug. Use the appropriate square drive bit or socket to seat the plug fully without over-driving. Follow applicable IPC or local plumbing code requirements for pipe sealing and pressure testing.