Idex Plugs and Caps

Plugs and Caps

  • Seal 6-32, 6-40, 10-32, 1/4-28, M6 or 5/16-24 threaded ports or fittings

Use Upchurch Scientific® plugs to close off unused ports in valves and multi-port connectors. Our color-coded 10-32 threaded plugs are perfect for identifying stored columns that have different packing materials, or in which different mobile phases have been utilized. Cap off tubing with one of the PEEK™ or ETFE caps presented on this page and the appropriate fittings from this chapter.

To help determine which plug or cap is best suited for your application, please visit for detailed chemical compatibility data. 


Serial Number Description
P-116 MicroTight® Ferrule Plug
P-120 PCTFE Plug 1/4-28 Coned, for 1/8" OD
P-123 Tefzel® (ETFE) Plug 1/4-28 Flat-Bottom, Hex Head Style
P-309 Plug - Delrin®, 1/4-28 Flat-Bottom
P-311 Plug Tefzel® (ETFE) - 1/4-28
P-314 Plug Tefzel® (ETFE) - M6 Flat-Bottom Black
P-314N Plug Tefzel® (ETFE) - M6 Flat-Bottom Natural
P-316 Plug DuPont® PFA,1/4-28 Flat-Bottom
P-321 Plug PEEK Natural, 1/4-28 Flat-Bottom
P-408 Flanged Fitting Plug - 1/4-28 Flat-Bottom
P-411 Microtight® Plug, ZDV, Headless, 6-32, Peek™, Black
P-520 Stainless Steel Plug 10-32 Coned w 5/16" Hex
P-550 Extra Long PEEK Plug, 10-32 Coned Natural
P-550BLK Extra Long PEEK Plug, 10-32 Coned Black
P-551 PEEK Plug, 10-32 Coned Natural
P-551BLK PEEK Plug, 10-32 Coned Black
P-552 Valco Compatible Plug, 6-40 Coned
P-553 MicroTight® Gauge Plug, 6-32 Coned
P-554 MicroTight® Gauge Plug, 10-32 Coned
P-555 MicroTight® PEEK Plug, 6-32 Coned
P-556 PEEK Plug Natural, 5/16-24 Flat-Bottom
P-557 Delrin® Plug White, 5/16-24 Flat-Bottom
P-558 Plug PEEK Green 6-40 FB
P-559 Plug PEEK, Natural, 6-32 Flat-Bottom
P-849 Plug Delrin® - 10-32 Flat Bottom
U-467B Plug Delrin® - 10-32 Coned Blue
U-467BLK Plug Delrin® - 10-32 Coned Black
U-467R Plug Delrin® - 10-32 Coned Red
U-467W Plug Delrin® - 10-32 Coned White
U-468B Plug Tefzel® (ETFE) - 10-32 Coned Blue
U-468BLK Plug Tefzel® (ETFE) - 10-32 Coned Black
U-468G Plug Tefzel® (ETFE) - 10-32 Coned Green
U-468N Plug Tefzel® (ETFE) - 10-32 Coned Natural
U-468R Plug Tefzel® (ETFE) - 10-32 Coned Red
U-468Y Plug Tefzel® (ETFE) - 10-32 Coned Yellow
VHP-600 VHP Plug
P-600 Adapter Body PEEK Bottle Cap, 6-32 Port
P-754 Tefzel® (ETFE) Cap 1/16" Male Nut Yellow
P-754BLK Tefzel® (ETFE) Cap 1/16" Male Nut Black
P-755 Tefzel® (ETFE) Cap for 1/4-28 Nut
P-756 Tefzel® (ETFE) Cap for M6 Nut