Expansion Tools | McMaster-Carr

	For Pipe Size For Pipe Size

	System of Measurement System of Measurement

Inch

Metric

	For Tube OD For Tube OD

	For Minimum Pipe ID For Minimum Pipe ID

	Expansion Plug Type Expansion Plug Type


Wing Nut	Snap

T-Handle	Hex Nut

Square Head

	Sealing Location Sealing Location


End of Pipe	Inside Pipe	End of Tube

	For Use On For Use On

	Plate Material Plate Material

Stainless Steel

Steel

Plastic

	Power Source Power Source

	For Maximum Pipe ID For Maximum Pipe ID

	Maximum Air Back Pressure Maximum Air Back Pressure

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

DFARS Specialty Metals
COTS-Exempt

	For Square Drive Size For Square Drive Size

3/8"

1/2"

3/4"

	For Maximum Wall Thickness For Maximum Wall Thickness

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

RoHS Compliant

RoHS Compliant with
Exemptions

	Material Material

Steel

Stainless Steel

	Overall Height Overall Height

	Maximum Temperature Maximum Temperature

	Minimum Temperature Minimum Temperature

	Maximum Water Back Pressure Maximum Water Back Pressure

	Seal Material Seal Material

Rubber

Plastic

	With Bypass With Bypass

Yes

	For ID For ID

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

REACH Compliant

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376 Products

Tube Expanders, Flarers, and Beaders

Tube Expanders for Impact Wrenches

Use the power of an impact wrench to stretch the ends of metal tubing, allowing another tube with the same diameter to fit inside.

Hammer-Driven Tube Expanders

Using a hammer, tap these expanders into the end of a tube to allow a second piece of the same diameter to fit inside.

Tube Expanders

Enlarge the end of a tube to allow a second piece of the same diameter to fit inside.

Tube Expanders for Condensers,
Heat Exchangers, and Boilers

Designed for building and maintaining equipment with tubes that pass through perforated metal sheets, these expanders have rollers and tapered noses to ensure uniform tube tightness.

Expanding Pliers for Soft Tubing

Stretch the end of soft plastic and rubber tubing to make room for fittings with the same or slightly larger diameter.

Tube Flarers and Expanders for 37° and 45° Flares

Create 37° flares for high-pressure applications as well as 45° single and double flares for low-pressure applications.

Tube Flarers and Expanders for 45° Flares

Create 45° flares for low-pressure applications.

Vise-Mount Tube Flarers and Reamers for 37° Flares

Ream and flare both soft and hard metal tubing with these tools.

Vise-Mount Tube Flarers for 37° Flares

Use these tools to flare both soft and hard metal tubing.

Hand-Held Tube Flarers for 37° Flares

Flare soft metal tubing.

Hand-Held Tube Flarers for 45° Flares

Form 45° flares in aluminum, brass, or copper tubing so it’s compatible with flared tube fittings often used in low-pressure plumbing, air conditioning, and refrigeration systems.

Hand-Held Tube Flarers for
Single and Double 45° Flares

Double flares roll the end of tubing in on itself then flare both layers for applications such as brake lines.

Hammer-Driven Tube Flarers for 45° Flares

Tap this tool with a hammer to quickly form 45° flared ends in copper tubing.

Tube Beaders

Form a rounded bead on the end of metal tubing to hold soft rubber hose in place.

Hammer-Driven Thin-Wall (EMT) Conduit End Reshapers

Hammer-Driven Thin-Wall
(EMT) Conduit End Reshapers

Repair ends of thin-wall (EMT) conduit that have been warped by cutting.

Hammer-Driven Tube End Reshapers

Restore tube ends with a few light blows of a hammer.

Expansion Plugs

Wing Nut Expansion Plugs

Twist the wing nut on these plugs to expand the seal.

Hex-Nut Expansion Plugs

Tighten the nut on these plugs to expand the seal.

Quick-Snap Expansion Plugs

Turn the cam handle to expand the seal, then snap the handle down to hold it in place.

T-Handle Expansion Plugs

Twist the easy-grip t-handle on these plugs to expand the seal.

Square-Head Expansion Plugs

Turn the square head of the plug into the sealing ring to close off pipe openings.

Expansion Plugs with Bypass

Use the bypass tube on these plugs to add air, water, and other fluid to your pipeline or to relieve pressure while testing.

Deep-Reach Wing Nut Expansion Plugs

Insert these plugs deep within your pipe to seal it off from the inside.

Deep-Reach Hex Nut Expansion Plugs with Bypass

Use the bypass tube to add air, water, and fluid or relieve back pressure.

Expansion Plugs for Tubing

These plugs are designed for metal and rigid plastic tubing.

Pin Insertion Tools

Pin-Holding Pin Insertion Tool Sets

The tools in these sets have a sleeve that slides over the pin and holds it in place.

Pin-Holding Pin Insertion Tools

A sleeve slides over the pin and holds it in place.

Magnetic Pin-Holding Pin Insertion Tools

The magnetic tip holds pins in place.

Expansion Plugs for Castings

Also known as freeze plugs, these are commonly used to permanently seal the shallow holes left in a component during the casting process.

Rod and Piston Seal Installation Tools

Low-Friction Piston Ring Compressors

Also known as a wrinkle-band compressor, this tool has fewer points of contact than other compressors for less friction.

Flared-End Piston Ring Compressors

The flared end prevents this compressor from following the piston into the cylinder.

Easy-to-Adjust Piston Ring Compressors

These compressors have a spring clutch that allows incremental sizing adjustments for a secure fit. Use them to ensure smooth insertion of your piston into a cylinder.

Quick-Release Piston Ring Compressors

Push the lever and this compressor instantly releases for easy removal.

Rod Seal Installation Tools

Install flexible seals, wipers, and O-rings.

Piston Ring Installation Tools

Reduce the risk of distorting and breaking piston rings during installation and removal.

Tube Expanders, Flarers, and Beaders

Tube Expanders for Impact Wrenches

Hammer-Driven Tube Expanders

Tube Expanders

Tube Expanders for Condensers,Heat Exchangers, and Boilers

Expanding Pliers for Soft Tubing

Tube Flarers and Expanders for 37° and 45° Flares

Tube Flarers and Expanders for 45° Flares

Vise-Mount Tube Flarers and Reamers for 37° Flares

Vise-Mount Tube Flarers for 37° Flares

Hand-Held Tube Flarers for 37° Flares

Hand-Held Tube Flarers for 45° Flares

Hand-Held Tube Flarers forSingle and Double 45° Flares

Hammer-Driven Tube Flarers for 45° Flares

Tube Beaders

Hammer-Driven Thin-Wall (EMT) Conduit End Reshapers

Hammer-Driven Thin-Wall(EMT) Conduit End Reshapers

Hammer-Driven Tube End Reshapers

Hammer-Driven Tube End Reshapers

Expansion Plugs

Wing Nut Expansion Plugs

Hex-Nut Expansion Plugs

Quick-Snap Expansion Plugs

T-Handle Expansion Plugs

Square-Head Expansion Plugs

Expansion Plugs with Bypass

Deep-Reach Wing Nut Expansion Plugs

Deep-Reach Hex Nut Expansion Plugs with Bypass

Expansion Plugs for Tubing

Pin Insertion Tools

Pin-Holding Pin Insertion Tool Sets

Pin-Holding Pin Insertion Tools

Magnetic Pin-Holding Pin Insertion Tools

Expansion Plugs for Castings

Expansion Plugs for Castings

Rod and Piston Seal Installation Tools

Low-Friction Piston Ring Compressors

Flared-End Piston Ring Compressors

Easy-to-Adjust Piston Ring Compressors

Quick-Release Piston Ring Compressors

Rod Seal Installation Tools

Piston Ring Installation Tools

Tube Expanders for Condensers,
Heat Exchangers, and Boilers

Hand-Held Tube Flarers for
Single and Double 45° Flares

Hammer-Driven Thin-Wall
(EMT) Conduit End Reshapers