Conduit Caps | McMaster-Carr

	System of Measurement System of Measurement

Inch

Metric

	For OD For OD

	For Shape For Shape


Round	Rectangle

Square

	Material Material

	Cap Type Cap Type


Push On	Screw On

Stretchable	Shrink Fit

Snap On

	Inside Height Inside Height

	Color Color

	Black		Red
	Gray		Blue
	Pink		White
	Green		Orange
	Clear		Yellow

	Profile Profile


Straight	Tapered

	For Pipe Size For Pipe Size

1/16
1/8
1/4
3/8
1/2
3/4
1
1 1/4
1 1/2
2
2 1/2
3
3 1/2
4
5
6
8

	For Knockout Trade Size For Knockout Trade Size

	Flexibility Flexibility

Flexible

Rigid

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

RoHS Compliant with
Exemptions

	Maximum Temperature Maximum Temperature

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	For Knockout Diameter For Knockout Diameter

	Thread Type Thread Type

	Pipe Size Pipe Size

	Thread Size Thread Size

	Environment Environment

	Head Diameter Head Diameter

	Conduit Trade Size Conduit Trade Size

1/2
3/4
1
1 1/4
1 1/2
2
2 1/2
3
4

	For Connection Type For Connection Type

997 Products

Caps

Metal Round Caps

More durable than plastic caps, these provide the most protection from abrasion and impact.

Round Caps

Slide these flexible vinyl caps on and they conform for a snug fit.

Heavy Duty Round Caps

Made of rigid plastic, these caps are more wear resistant than vinyl caps but not as flexible.

Domed Round Caps

The large domed head extends beyond the diameter of your pipe, rod, or tubing for added protection.

Sure-Grip Round Caps

A long, textured pull tab provides a sure grip for quick removal even when wearing gloves.

Tethered Round Caps

The tethered design allows frequent access to the ends of pipe, tubing, and other round objects without ever misplacing the cap.

Hanging Round Caps

Slide these caps over a tool handle or other round object and use the eye to hang it.

Roll-Resistant Round Caps

Commonly used on shipping tubes, these caps have a square head to prevent round objects from rolling during shipping and storage.

Conductive Round Caps

With a surface resistivity of less than 10⁵ ohms, these caps not only dissipate electrical charges, but can be used as an electrical shield.

Antistatic Round Caps

Keep equipment safe from electrical currents with these caps that have a surface resistivity of less than 10¹² ohms.

High-Temperature Round Caps

Good for electroplating, paint baking, and powder-coating applications, these caps withstand temperatures up to 440° F or 570° F.

Chemical-Resistant Round Caps

These caps have excellent chemical resistance for masking parts during chemical finishing applications such as plating and anodizing.

Food Industry Round Caps

Made of FDA listed materials, these caps are suitable for food contact.

Tapered Caps

These flexible plastic caps are tapered to fit a variety of unthreaded and threaded objects.

Tapered Cap Assortments

Keep tapered caps of various sizes on hand to solve whatever problems arise. These flexible plastic caps are tapered to fit a variety of unthreaded and threaded objects.

High-Temperature Tapered Caps

Made of silicone, these caps withstand temperatures of 450° F for electroplating, paint-baking, and powder-coating applications. All of these flexible caps are tapered to fit a variety of unthreaded and threaded objects.

Threaded Caps

Protect externally threaded components from contaminants during fabrication and storage.

Tear-Tab Caps

Push these caps onto pipe and fittings, then tear their tab to break the seal for easy removal.

Propane Tank Tear-Tab Caps

Designed for propane tanks such as those on forklifts and grills, these caps protect tank valves during storage and transit. Push the caps onto the valves, then tear their tab to break the seal for easy removal.

Stretchable Sealing Caps

Tug on the pull tabs to stretch these caps onto the tips of bottles, beakers, flasks, and cylinders, creating an airtight seal.

Heat-Shrink Round Caps

Permanently seal pipe, tubing, conduit, and even crimped electrical connections. Slide these flexible caps on and use a heat gun to tightly shrink them to the shape of whatever they are covering. Their outer surface shrinks while the inner wall flows into voids to create a sealed connection.

Squeeze Top Caps

Squeeze the dome top to remove these caps. They're commonly used as thread protectors.

Flexible Pull-Tab Caps

Slide these flexible vinyl caps on and they conform for a snug fit. Pull the tab for easy removal.

High-Visibility Pull-Tab Caps

A vibrant yellow color makes these caps stand out. They are made of flexible rubber that conforms for a snug fit. Pull the tab for easy removal.

Flange Caps

Stretchable Flange Caps

Stretch these caps over flared edges such as flanged tubing and valve handles.

Flange Caps

Snap these caps into flange bolt holes to safeguard pipe flanges during shipping, storing, and finishing applications. They all have a thick center pad to protect the flange opening and pipe threads from damage.

SAE Flange Caps

Protect SAE hydraulic flanges during shipping, storing, and finishing applications.

Hole Plugs for Enclosures

Snap-In Hole Plugs

Seal unused holes and knockouts in enclosures and outlet boxes.

Threaded Hole Plugs

Close off unused threaded holes.

Self-Centering Hole Plugs

A circular groove quickly centers plug in unused holes and knockouts.

Corrosion-Resistant Washdown Hole Plugs

Sized for knockouts and conduit openings.

Threaded Submersible Hole Plugs

Close off unused threaded holes.

Submersible Hole Plugs

Corrosion-Resistant Washdown
Hole Plugs for Push-Button Holes

Sized for 22 mm and 30 mm push-button holes.

Corrosion-Resistant Washdown
Hole Plugs for Square Holes

Close 2" square holes in the floor of your enclosure with these adhesive plugs.

Washdown Hole Plugs

Sized for knockouts and conduit openings.

Washdown Hole Plugs for Push-Button Holes

Sized for 22 mm and 30 mm push-button holes.

Sanitary Threaded Hole Plugs

FDA compliant for use near food, these plugs close off unused holes in equipment such as electrical enclosures to keep out debris and water.

Service Entrance Weatherheads

Create a connection point to route overhead service wire and cable from utility poles to electrical meters, bringing power to buildings.

Heat-Shrink End Caps

Seal the end of crimped connections, such as motor coils, to protect them from moisture.

Caps

Metal Round Caps

Round Caps

Heavy Duty Round Caps

Domed Round Caps

Sure-Grip Round Caps

Tethered Round Caps

Hanging Round Caps

Roll-Resistant Round Caps

Conductive Round Caps

Antistatic Round Caps

High-Temperature Round Caps

Chemical-Resistant Round Caps

Food Industry Round Caps

Tapered Caps

Tapered Cap Assortments

High-Temperature Tapered Caps

Threaded Caps

Tear-Tab Caps

Propane Tank Tear-Tab Caps

Stretchable Sealing Caps

Heat-Shrink Round Caps

Squeeze Top Caps

Flexible Pull-Tab Caps

High-Visibility Pull-Tab Caps

Flange Caps

Stretchable Flange Caps

Flange Caps

SAE Flange Caps

Hole Plugs for Enclosures

Snap-In Hole Plugs

Threaded Hole Plugs

Self-Centering Hole Plugs

Corrosion-Resistant Washdown Hole Plugs

Threaded Submersible Hole Plugs

Submersible Hole Plugs

Corrosion-Resistant WashdownHole Plugs for Push-Button Holes

Corrosion-Resistant WashdownHole Plugs for Square Holes

Washdown Hole Plugs

Washdown Hole Plugs for Push-Button Holes

Sanitary Threaded Hole Plugs

Service Entrance Weatherheads

Service Entrance Weatherheads

Heat-Shrink End Caps

Heat-Shrink End Caps

Corrosion-Resistant Washdown
Hole Plugs for Push-Button Holes

Corrosion-Resistant Washdown
Hole Plugs for Square Holes