Techcon cartridge retainers (sleeves) securely enclose plastic cartridges, ensuring a seamless connection to the retainer cap. Crafted from high-durability aluminum, these lightweight retainers feature a twist-lock mechanism for easy integration with caps or dispensing guns. Strategically positioned viewing slots allow for real-time monitoring of fluid levels, while the robust design safely withstands pressures up to 100 psi (6.9 bar).