The John Guest Polypropylene Plug Stopper Fitting is a UK-manufactured push-to-connect end cap designed to terminate water lines, air lines, and CO2 applications quickly and reliably. Engineered from food-grade polypropylene, this white plug fitting uses a grip-and-seal collet system for tool-free installation and removal.
TECHNICAL DETAILS
Specifications
| Manufacturer | John Guest Speedfit |
| Material | Polypropylene with food-grade nitrile O-ring |
| Connection Type | Push-to-connect collet system |
| Color | White |
| Country of Manufacture | United Kingdom |
| Function | End cap / line termination |
| Compatible Media | Potable water, foodstuff, air, inert gases, CO2, vacuum |
COMPATIBILITY & APPLICATIONS
Use Cases
This John Guest plug stopper is ideal for terminating unused outlets on manifolds, capping off filter housings during maintenance, or sealing spare connections on reverse osmosis systems. The food-grade construction makes it suitable for potable water, beverage lines, and refrigerator hookups. Also compatible with pneumatic systems, CO2 carbonation lines, and vacuum applications. To install, simply push the fitting fully onto the tubing until seated. To remove, push the collet toward the body and pull the tubing free.
💧 Keep a few John Guest plug fittings on hand during filter changes or system upgrades to prevent leaks from open ports while you work.
