Fernco QC-103 Flexible Pipe Cap 3 Inch

Product Description

The FERNCO QC-103 is a flexible pipe cap designed to seal 3-inch pipe ends quickly and securely. Built for both permanent and temporary applications, it fits over the end of a pipe and compresses to form a watertight seal without special tools. Plumbers and pipefitters install this cap in residential and commercial settings where a fast, reliable pipe termination is needed. The flexible construction allows it to conform to slight variations in pipe diameter, and it is reusable, making it practical for pressure testing and staged construction work.

The QC-103 is suited for 3-inch drain, waste, and vent piping in above-ground and underground installations. It is commonly used during rough-in phases to keep debris out of open pipe ends, during pressure testing to temporarily seal lines, or as a permanent cap on unused pipe terminals. The low-profile design and light weight make it easy to carry and install in tight spaces.

Key Features

• Fast, tool-free installation on 3-inch pipe ends
• Suitable for permanent or temporary capping applications
• Rated for underground and above-ground use
• Reusable design reduces material cost on multi-phase jobs
• Flexible construction accommodates minor pipe diameter variation

Compatibility

Designed as an OEM-style flexible cap for 3-inch nominal pipe, suitable for typical drain, waste, and vent pipe termination applications.

Installation Notes

Installation is performed by licensed plumbers or qualified pipefitters following local plumbing codes and IPC guidelines. Shut off any flow and relieve pressure in the line before capping. No adhesives or clamps are required for a standard installation, though the application type should be confirmed before selecting permanent versus temporary use. Inspect the pipe end for burrs or debris before seating the cap to ensure a proper seal.