Test Pumps and Plugs | McMaster-Carr

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Acetic Acid (White Vinegar) (5% Concentration)

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DFARS Specialty Metals

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2,505 Products

Fluid Handling

Expansion Plugs

Seal pipe and tubing lines when checking for leaks

346 products

Bore Sealing Plugs

Permanently seal unthreaded holes in pneumatic and hydraulic components

69 products

Pipe and Fittings

Generally thicker and more rigid than tubing for distributing liquids and gases

1,393 products

Hose and Hose Fittings

Flexible and stronger than tubing; often used to convey liquids and gases under pressure

9 products

Pipeline Fluid Blockers

Temporarily block the flow between pipe flanges as you work downstream; also known as paddle blinds

47 products

Test Pumps

Force air or liquid through your system to look for leaks; often called hydrostatic test pumps

30 products

Pressure Test Fittings

Create a temporary connection point for gauges and other testing equipment

31 products

Corrosion-Inhibiting Rods and Pads

Protect tanks, water heaters, and heat exchangers from rust; also known as sacrificial anodes

41 products

Heat Exchanger Plugs

Plug leaky internal tubes in heat exchangers

17 products

Building and Machinery Hardware

Protective Plugs

Insert into holes in pipe, containers, panels, and parts to keep out debris

440 products

Facility and Grounds Maintenance

Drain Cleanouts

Create an access point to inspect and clean floor drain pipelines

3 products

Power Transmission

Air Pumps

Fill tires, air springs, and inflatable plugs on the go

1 product

Communication

Tamper-Evident Seals

Secure hasps, latches, and other connections to visibly indicate tampering

2 products