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Plugs and caps

IDEX Plugs & Caps offer a simple and reliable solution for temporarily or permanently sealing ports, fittings and tubing. Whether you want to store a column without it drying out or seal an unused port in a manifold, the right plug or cap prevents contamination, solvent evaporation and unwanted leaks.

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14 products visible

P-520 - Stainless Steel Plug 10-32 Coned w 5/16" Hex

P-558 - Plug PEEK Green 6-40 FB

001320 - CAPS, ETFE, SMALL

002320 - PLUG, 1/4-28

MicroTight Gauge Plug Coned

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Plug Flat-Bottom

Tefzel Cap for Nut

Tefzel Cap Male Nut

P-123 - Tefzel® (ETFE) Plug 1/4-28 Flat-Bottom, Hex Head Style

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Request a no-obligation consultation with Inacom and get in touch with one of our specialists!

P-408 - Flanged Fitting Plug - 1/4-28 Flat-Bottom

VHP-600 - VHP Plug

The difference between plugs and caps

Plugs: Have an external (male) thread and are screwed directly into a port (such as that of a valve, column or union) to seal it.
Caps: Have an internal (female) thread and are screwed onto the end of a fitting or tubing connection to seal the opening.

Part No.	Description	Head Style	Material
P-123	Plug for 1/4-28 Flat-Bottom Ports	5/16” Hex	ETFE Natural
P-309	Plug for 1/4-28 Flat-Bottom Ports	Standard Knurl	Delrin Black
P-311	Plug for 1/4-28 Flat-Bottom Ports	Standard Knurl	ETFE Natural
P-314	Plug for M6x1 Flat-Bottom Ports	Standard Knurl	ETFE Black
P-316	Plug for 1/4-28 Flat-Bottom Ports	Standard Knurl	PFA Natural
P-321	Plug for 1/4-28 Flat-Bottom Ports, FlushNut™	FlushNut	PEEK Natural
P-520	Plug for 10-32 Coned Ports	5/16” Hex	SST
P-550	Plug for 10-32 Coned Ports	Extra Long Standard Knurl	PEEK Natural
P-551	Plug for 10-32 Coned Ports	Standard Knurl	PEEK Natural
P-555	Plug for 6-32 Coned Ports	Standard Micro Knurl	PEEK Natural
P-556	Plug for 5/16-24 Flat-Bottom Ports	Standard Knurl	PEEK Natural
P-558	Plug for 5/16-24 Flat-Bottom Ports	Micro Headless Knurl	PEEK Green
P-849	Plug for 10-32 Flat-Bottom Ports	Standard Knurl	Delrin Black
U-467R	Plug for 10-32 Coned Ports	Standard Knurl	Delrin Red
U-468B	Plug for 10-32 Coned Ports	Standard Knurl	ETFE Blue
U-468BLK	Plug for 10-32 Coned Ports	Standard Knurl	ETFE Black
U-468N	Plug for 10-32 Coned Ports	Standard Knurl	ETFE Natural
VHP-600	VHP Plug for 10-32 Coned Ports	3/8” Hex	PK-SST
P-754	Cap for 10-32 Coned Ports	Standard Knurl	ETFE Yellow
P-755	Cap for 1/4-28 Flat-Bottom Ports	Standard Knurl	ETFE Black
P-756	Cap for M6 Flat-Bottom Ports	Standard Knurl	ETFE Blue

Installation & material advice

First, it is important to match the material to your system. Choose PEEK or ETFE for biocompatible applications, while stainless steel is preferred for permanent industrial seals.

Fingertip convenience: Most polymer plugs have a knurled head so they can be tightened by hand.
Tools: For stainless steel or high-pressure plugs, versions with a hex head are available for use with a wrench.

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