Polyethylene Pipe Caps | McMaster-Carr

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	Material Material

Brass

Plastic

	For Pipe Material For Pipe Material

Plastic

	For Shape For Shape


Round	Square

Rectangle	Corner

Angle

	System of Measurement System of Measurement

Inch

Metric

	For OD For OD

	For ID For ID

	Plug Type Plug Type


Snap In	Push In

Screw In

	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

	Color Color

	White		Black
	Dark Gray		Red
	Orange		Blue
	Clear		Yellow
	Pink		Gray

	Profile Profile


Straight	Tapered

	Head Diameter Head Diameter

	Cap Type Cap Type


Push On	Stretchable

Snap On

	For Inside Width For Inside Width

	For Connection Type For Connection Type

	Head Width Head Width

	Pipe Size Pipe Size

	Height Height

	Type Type

	Cap		Plug

	Maximum Temperature Maximum Temperature

	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

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

REACH Compliant

	For Tube Material For Tube Material

498 Products

Pipe, Tubing, Hose, and Fittings

High-Pressure Barbed Plastic Pipe Fittings for Water

Use for pressures up to 200 psi. Also known as insert fittings, these slide into semi-flexible plastic pipe and secure with a clamp.

Underground Snap-Lock Polyethylene
Pipe Fittings for Drain, Waste, and Vent

The snap-together design allows you to quickly connect these fittings to pipe with no cement required. Fittings are typically used in gravity-flow drainage applications.

Plastic Pipe Fittings for Oil

Made of corrosion-resistant plastic, these fittings won’t deteriorate when used in oil applications. They have high strength and impact resistance.

Brass Push-to-Connect Fittings for Copper Tubing

Choose these metal fittings when you need better durability than our plastic push-to-connect fittings.

Push-to-Connect Tube Fittings for Air

Brass Compression Tube Fittings for Air and Water

A single sleeve (ferrule) compresses the tubing as you tighten the nut on these fittings, creating a strong seal. They are brass for good corrosion resistance.

Push-to-Connect Tube Fittings for Drinking Water

These fittings keep their strength in moist environments and meet NSF/ANSI 61 for drinking water. Also known as instant fittings.

Push-to-Connect Tube Fittings for Hot Drinking Water

Fittings can withstand temperatures up to 200° F.

Push-to-Connect Fittings for Plastic
Tubing—Food and Beverage

Also known as instant fittings, they connect to tubing with a push, and an internal gripping ring and O-ring hold the tubing tight. Use in applications up to 150 psi.

Caps

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.

Corner Caps

Guard the corners of fragile materials such as glass and mirrors.

Heavy Duty Angle Caps

Made of rigid plastic, these caps provide more wear resistance to the ends of angle iron than vinyl caps but are not as flexible.

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 Elastic Caps

Similar to a shower cap, these caps have an elastic band that allows them to stretch and cover a variety of shapes in a range of sizes.

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.

Plugs

Snap-In Round Plugs

Flexible ridges or straps hold these plugs in place and allow them to fit a range of hole diameters.

Threaded Round Plugs for NPT Pipe

Protect internally threaded NPT connections from contaminants during fabrication and storage.

Threaded Round Plugs for Straight-Thread Pipe

Seal tube and hose fittings to keep their straight threads protected from contaminants during fabrication and storage.

Threaded Round Plugs for 37° Flared Tube

Designed to fit into 37° flared connections such as those found on JIC and SAE fittings, these plugs protect internally threaded connections from contaminants during fabrication and storage.

Conductive Round Plugs

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

Antistatic Round Plugs

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

Hollow Tapered Plugs

The hollow construction allows these plugs to compress for a snug fit in threaded and unthreaded holes of varying diameters.

Hollow Tapered Plug Assortments

Keep hollow tapered plugs of various sizes on hand to solve whatever problems arise. The hollow construction allows these plugs to compress for a snug fit in threaded and unthreaded holes of varying diameters.

Pull-Ring Tapered Plugs

Pull the two built-in rings to quickly remove these plugs. All are tapered to fit a range of hole diameters.

Snap-In Square Plugs

Flexible ridges or straps hold these plugs in place.

Push-In Square Plugs

Push these plugs into an opening and friction holds them in place.

Domed Square Plugs

Often used on metal furniture, these plugs provide a finished look on posts and tubes. Snap them into place and their flexible ridges will provide a secure grip.

Snap-In Rectangular Plugs

Flexible ridges securely hold these plugs in place and allow them to fit a range of hole sizes.

Push-In Rectangular Plugs

Push these plugs into an opening and friction holds them in place.

Plastic Snap-In Panel Plugs

Tapered prongs or a snap-in ring securely hold these plugs in place.

Ethernet Port Plugs

Shield unused RJ45 type ports on computers and other electronic equipment from debris and moisture.

Pipe, Tubing, Hose, and Fittings

High-Pressure Barbed Plastic Pipe Fittings for Water

Underground Snap-Lock PolyethylenePipe Fittings for Drain, Waste, and Vent

Plastic Pipe Fittings for Oil

Brass Push-to-Connect Fittings for Copper Tubing

Push-to-Connect Tube Fittings for Air

Brass Compression Tube Fittings for Air and Water

Push-to-Connect Tube Fittings for Drinking Water

Push-to-Connect Tube Fittings for Hot Drinking Water

Push-to-Connect Fittings for PlasticTubing—Food and Beverage

Caps

Tapered Caps

Tapered Cap Assortments

Corner Caps

Heavy Duty Angle Caps

Tear-Tab Caps

Propane Tank Tear-Tab Caps

Stretchable Elastic Caps

Flange Caps

SAE Flange Caps

Plugs

Snap-In Round Plugs

Threaded Round Plugs for NPT Pipe

Threaded Round Plugs for Straight-Thread Pipe

Threaded Round Plugs for 37° Flared Tube

Conductive Round Plugs

Antistatic Round Plugs

Hollow Tapered Plugs

Hollow Tapered Plug Assortments

Pull-Ring Tapered Plugs

Snap-In Square Plugs

Push-In Square Plugs

Domed Square Plugs

Snap-In Rectangular Plugs

Push-In Rectangular Plugs

Plastic Snap-In Panel Plugs

Plastic Snap-In Panel Plugs

Ethernet Port Plugs

Ethernet Port Plugs

Underground Snap-Lock Polyethylene
Pipe Fittings for Drain, Waste, and Vent

Push-to-Connect Fittings for Plastic
Tubing—Food and Beverage