non-threaded MCN-TCS Series Silicone Tethered Caps MCN-TCS Series caps protect tubes and ports from contamination, fitting popular 1/4" and 3/8" sizes. A tether keeps the cap in place when not in use. Caps provide easy removal and reapplication when draining fluid. * USP Class VI silicone * Meets a variety of applications Material: Silicone Color: Natural C B A MCN-TCV Series Vinyl Tethered Caps MCN-TCV Series caps protect tubes and ports from contamination, fitting popular 1/4" and 3/8" sizes. A tether keeps the cap in place when not in use. The bulb design provides easy removal and reapplication when draining fluid. * Meets a variety of applications C A * Additional colors available B Material: Vinyl Color: Blue PZC Series Sleeve Caps for Tube Ends PZC Series sleeve caps for tube ends are designed to protect unified threads, but can also be used on both threaded and non-threaded fittings. The cap also doubles as a plug. * Flanged for easy installation and removal A Material: Low-Density Polyethylene Color: Orange C E D 60 * For other material and color options, contact customer service.