Test Plugs | McMaster-Carr

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50 ft. of head to 99 ft. of head

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1,331 Products

Fluid Handling

Expansion Plugs

Seal pipe and tubing lines when checking for leaks

354 products

Bore Sealing Plugs

Permanently seal unthreaded holes in pneumatic and hydraulic components

69 products

Pressure Test Fittings

Create a temporary connection point for gauges and other testing equipment

31 products

Pipe and Pipe Fittings

Generally thicker and more rigid than tubing for distributing liquids and gases through your facility

44 products

Hose and Hose Fittings

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

9 products

Building and Machinery Hardware

Protective Plugs

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

500 products

Protective Caps

Protect just about anything, including pipe, flanges, screws, and posts

289 products

Facility and Grounds Maintenance

Drain Cleanouts

Create an access point to inspect and clean floor drain pipelines

3 products

Communication

Tamper-Evident Seals

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

2 products