Mission Rubber 704015 Rubber Clamp-on Test Cap 4 in

Product Description

The MISSION RUBBER 704015 is a 4-inch rubber clamp-on test cap designed to temporarily seal the open end of a pipe during pressure and leak testing procedures. The cap uses a mechanical clamp mechanism to compress the rubber body against the pipe end, creating a secure, watertight seal without requiring threading, soldering, or adhesive. It is commonly used by plumbers and pipefitters during rough-in inspections and drain, waste, and vent (DWV) system testing. The cap weighs 0.65 pounds, making it easy to handle and position in tight spaces.

This test cap is suited for use on 4-inch pipe ends in residential and light commercial plumbing installations. It is most commonly placed during new construction or remodel rough-in stages, where the DWV system must hold a static water or air pressure test before inspection sign-off. The clamp-on design speeds up installation and removal compared to push-on or threaded alternatives, reducing time on each test setup.

Key Features

• 4-inch clamp-on design seals pipe ends without threading or soldering
• Rubber body conforms to the pipe end for a reliable, watertight seal
• Mechanical clamp provides secure retention during pressure testing
• Lightweight at 0.65 pounds for easy single-hand placement
• Removable and reusable across multiple test setups

Compatibility

Designed as an OEM-style replacement and standard-use test cap for 4-inch diameter pipe ends in residential and commercial DWV plumbing systems.

Installation Notes

Installation is performed by licensed plumbers or pipefitters during system pressure testing phases. Shut off any water supply and depressurize the line before placing or removing the cap. Follow local plumbing codes and IPC guidelines for required test pressures and hold times. Do not exceed the pressure rating of the cap or the connected piping system.

Technical Specifications

• Pipe Size: 4 inches
• Weight: 0.65 pounds
• UPC: 70288706103

Standard Information

• Brand: MISSION RUBBER
• Manufacturer Part Number: 704015