Tube Seals | McMaster-Carr

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18,711 Products

Sealing

O-Rings

Fit snugly into a groove between parts to create a leak-resistant seal

10,733 products

O-Ring Cord Stock

Cut to length to create customized seals

295 products

Backup Rings

Extend the life of O-rings and improve their performance under high pressure

263 products

O-Ring Bonding Kits

Everything needed to make O-rings

7 products

Tube Fitting Gaskets

Prevent leaks when connecting sanitary tube fittings

428 products

Drain Gaskets

Create a watertight seal between your drain and fixture without the mess of plumber's putty

3 products

Rope Seals

Insulate the edges of oven, furnace, and boiler doors to keep heat in

135 products

Building and Machinery Hardware

Protective Plugs

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

1,011 products

Protective Caps

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

1,045 products

Grommets

Protect wire, cable, and cords from holes with sharp or rough edges

74 products

Bumpers

Absorb impact to protect equipment and surfaces from dents and scuffs

1,450 products

Surface Guards

Protect walls and other flat surfaces from impact

9 products

Fluid Handling

Tube Fitting Rings

Prevent leaks at tubing connection points

33 products

Pipe and Pipe Fittings

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

1,999 products

Hose and Hose Fittings

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

279 products

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

28 products

Fabricating and Machining

Fixture Plate Plugs

Keep chips and shavings from clogging or damaging unused holes on fixture plates in milling machines

1 product

Fastening and Joining

Quick-Release Pin Receptacles

Secure quick-release pins when you don’t have a through hole

35 products

Quick-Release Pin Retaining Caps

Hold quick-release pins in holes that are oversized or out of round

23 products

Retaining Rings

Hold components on a shaft

25 products

Standoff Caps

Create a finished look on standoffs and protect them from dirt and debris

66 products

Electrical

Capacitor Boots

Shield capacitors and wire connections to extend their service life and reduce accidental shocks

3 products

Heat-Shrink Tubing End Caps

Seal moisture out of crimped electrical connections

4 products

DIN Rail Caps

Guard the edges of DIN rail from damage and create a finished look

2 products

Facility and Grounds Maintenance

Floor Drain Trap Seals

Stop sewer gases from escaping through rarely used floor drains if the P-trap dries out

4 products

Drain Cleanouts

Create an access point to inspect and clean floor drain pipelines

3 products

Rebar Caps

Brightly colored to alert workers to exposed rebar and pipe

4 products

Measuring and Inspecting

O-Ring Gauges

Identify the size of your O-ring

4 products

Material Handling

Conveyor Guide Mounting Rod Caps

Cover the ends of conveyor guide mounting rods for a finished look

7 products

Containers, Storage, and Furniture

Dust Covers

Stretch over drums, pails, and other objects to keep out dust and debris

16 products

Heating, Ventilation, and Air Conditioning

Air Conditioner Service Valve Caps

Seal off AC service valves to prevent refrigerant from leaking out

2 products

Communication

Tamper-Evident Seals

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

125 products