Hose Caps | McMaster-Carr

	Type Type


Cap	Plug

Adapter

	Material Material

Stainless
Steel

	For OD For OD

0.053" to 0.12"

0.079" to 0.15"

0.205" to 0.273"

0.235" to 0.302"

0.298" to 0.365"

0.327" to 0.394"

0.356" to 0.422"

0.385" to 0.451"

0.409" to 0.485"

0.468" to 0.545"

0.487" to 0.568"

0.518" to 0.605"

0.613" to 0.693"

0.663" to 0.761"

0.74" to 0.849"

0.753" to 0.868"

0.933" to 1.083"

1 1/16" to 1 1/8"

1.085" to 1.358"

1 1/8" to 1 3/16"

1.169" to 1.437"

1.173" to 1.298"

1 3/16" to 1 1/4"

1.249" to 1.402"

1 1/4" to 1 5/16"

1.282" to 1.445"

1 3/8" to 1 7/16"

1.498" to 1.62"

1 1/2" to 1 9/16"

1.568" to 1.688"

1 5/8" to 1 11/16"

1.688" to 1.818"

1.718" to 1.888"

1 3/4" to 1 13/16"

1.781" to 1.938"

1.837" to 2.013"

1 7/8" to 1 15/16"

1.953" to 2.085"

2.063" to 2.377"

2.074" to 2 1/4"

2 1/8" to 2 3/16"

2.235" to 2.401"

2 1/4" to 2 5/16"

2.333" to 2.54"

2 3/8" to 2 7/16"

2.395" to 2.688"

2 1/2" to 2 9/16"

2.579" to 2.728"

2 5/8" to 2 11/16"

2.656" to 2.926"

2.685" to 2.947"

2 3/4" to 2 13/16"

2.787" to 2.918"

2.912" to 3.175"

3 1/8" to 3 3/16"

3 1/4" to 3 5/16"

3 1/2" to 3 9/16"

3 5/8" to 3 11/16"

4 3/4" to 4 13/16"

	Coupling Size Coupling Size

2
2 1/2
3
4
5
6
8

	Color Color

	Black		White
	Red		Yellow
	Orange		Blue
	Green		Pink

	Cap Type Cap Type


Push On	Screw On

	Shape Shape

	Cap/Plug
	Straight

	Inside Height Inside Height

	Gender Gender


Female	Male

	Profile Profile


Straight	Tapered

	Cam-and-Groove Component Cam-and-Groove Component


Socket	Plug

	Connection Style Connection Style

Quick Disconnect

	For Use With For Use With

Hydraulic Fluid

Phosphoric Acid

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

DFARS Specialty Metals
COTS-Exempt

	Maximum Temperature Maximum Temperature

Less than 150° F

150° to 199° F

200° to 249° F

250° to 499° F

500° F or greater

	Thread Type Thread Type

Chicago Fire Department

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

RoHS Compliant with
Exemptions

	Length Length

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

REACH Compliant

	Flexibility Flexibility

	Connection Type Connection Type


Hose	Pipe

	For Pipe Size For Pipe Size

	Maximum Pressure Maximum Pressure

50 psi @ 72° F

75 psi @ 72° F

90 psi @ 72° F

100 psi @ 72° F

125 psi @ 72° F

150 psi @ 72° F

200 psi @ 72° F

225 psi @ 72° F

250 psi @ 72° F

300 psi @ 72° F

3,000 psi @ 72° F

3,500 psi @ 72° F

4,500 psi @ 72° F

5,500 psi @ 72° F

6,000 psi @ 72° F

How can we improve?

1,082 Products

Hose Fittings

Metal Garden Hose Fittings

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Attach these fittings to garden hose for a variety of water supply applications. They are metal for better durability than plastic garden hose fittings.

Plastic Garden Hose Fittings

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Made of nylon, these fittings are lighter in weight than metal garden hose fittings. Attach them to garden hose for a variety of water supply applications.

Metal Cam-and-Groove Hose Couplings for Water

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Metal cam-and-groove couplings have better durability than plastic cam-and-groove couplings.

Plastic Cam-and-Groove Hose Couplings for Water

Made of polypropylene, these cam-and-groove couplings are lighter in weight than metal cam-and-groove hose couplings.

Protective Plastic Plugs for
Cam-and-Groove Hose Sockets for Water

Protective Plastic Plugs for Cam-and-Groove Hose Sockets for Water

Insert these caps into a cam-and-groove socket to protect the end of the coupling from damage. The attached handle allows you to easily maneuver hose.

Twist-Claw Hose Couplings for Air and Water

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Couplings have an identical claw-style head that connects to another twist-claw hose coupling with a quarter twist.

Metal Cam-and-Groove Hose
Couplings for Chemicals and Petroleum

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Couplings are metal, which has better durability than plastic cam-and-groove hose couplings. They consist of a plug and a socket that connect and disconnect quickly. Use them if you need frequent access to a line. To connect, insert the plug into the socket and push the levers down.

Plastic Cam-and-Groove Hose
Couplings for Chemicals and Petroleum

Couplings are plastic, which is lighter in weight than metal cam-and-groove hose couplings. They consist of a plug and a socket that connect and disconnect quickly. Use them if you need frequent access to a line. To connect, insert the plug into the socket and push the levers down.

Dust Caps and Plugs for International Standard ISO A
Quick-Disconnect Hose Couplings for Hydraulic Fluid

Use these dust caps and plugs to keep contaminants out of your hose line.

Dust Caps and Plugs for Pioneer Quick-Disconnect
Hose Couplings for Hydraulic Fluid

Use these dust caps and plugs to keep contaminants out of your hose line.

Pioneer Quick-Disconnect Hose
Couplings for Hydraulic Fluid

Pioneer Quick-Disconnect Hose Couplings for Hydraulic Fluid

Use these couplings at pressures up to 3,000 psi. They consist of a plug and socket that connect and disconnect quickly. Use them if you need frequent access to a line. They are compatible with Pioneer-shape plugs and sockets.

Dust Caps and Plugs for International Standard
ISO Minimal-Spill Quick-Disconnect
Hose Couplings for Hydraulic Fluid

Use these dust caps and plugs to keep contaminants out of your hose line.

Dust Caps and Plugs for Snap-Tite H-Shape
Quick-Disconnect Hose Couplings for Hydraulic Fluid

Use these dust caps and plugs to keep contaminants out of your hose line.

Dust Caps and Plugs for International Standard ISO B
Quick-Disconnect Hose Couplings for Hydraulic Fluid

Use these dust caps and plugs to keep contaminants out of your hose line.

Threaded Hose Fittings for Hydraulic Fluid

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Fittings are threaded on both ends so you can connect them directly to a threaded hose or to pumps, cylinders, and other equipment in your hydraulic system. Use in high-pressure applications up to 6,000 psi

Cam-and-Groove Hose Couplings
for Food and Beverage

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Couplings are made of FDA listed materials, so they’re suitable for food and beverage applications and won’t impart tastes or odors to the product. They consist of a plug and a socket that connect and disconnect quickly. Use them if you need frequent access to a line. To connect, insert the plug into the socket and push the levers down.

Rocker-Lug Fire Hydrant Caps and Plugs

Thread these caps and plugs onto fire hydrants and washdown equipment to close off the line. They have rocker lugs for easy gripping.

Pin-Lug Fire Hydrant Caps

These caps are the fastest way to close off or access your water line. They have a bracket that snaps into any type of 2 1/2 size female fire hose threads. Tap on one of the pin lugs to remove quickly in an emergency.

Threaded Hose Fittings for Compressed Gas

Use these CGA fittings to connect welding hose to pressure regulators and torches.

Dust Caps and Plugs for Natural
and LP Gas Hose Fittings

To keep contaminants out of your gas line, add these dust caps and plugs to natural and LP gas couplings when they’re not connected. All work with couplings that are rated ANSI Z21.41/CSA 6.9 for use with gas fuel appliances.

Caps

Round Caps

Round Caps

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

Metal Round Caps

Metal Round Caps

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

Heavy Duty Round Caps

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.

Hanging Round Caps

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

Chemical-Resistant Round Caps

Chemical-Resistant Round Caps

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

High-Temperature Round Caps

High-Temperature Round Caps

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

Food Industry Round Caps

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

Antistatic Round Caps

Antistatic Round Caps

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

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.

Tapered Caps

Tapered Caps

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

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.

Flexible Pull-Tab Caps

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

Threaded Caps

Threaded Caps

Protect externally threaded components from contaminants during fabrication and storage.

Squeeze Top Caps

Squeeze Top Caps

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

Tear-Tab Caps

Tear-Tab Caps

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

Rebar Caps

Rebar Caps

Rebar Caps

Keep personnel safe from protruding rebar and pipe. Made of rigid plastic, these durable safety caps are bright orange or yellow for excellent visibility.

Loc-Line Coolant Hose

1/2" Loc-Line Coolant Hose

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Build a custom 1/2" system to deliver coolant, cutting oil, water, or air in any direction.

1/4" Loc-Line Coolant Hose

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Build a custom 1/4" system to deliver coolant, cutting oil, water, or air in any direction.

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)