Tube Seals | McMaster-Carr

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22,942 Products

Fluid Handling

Tube Fitting Rings

Snap onto push-to-connect fittings to identify different tubing lines

33 products

Hose and Hose Fittings

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

280 products

Pipe and Fittings

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

2,496 products

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

95 products

Pressure Test Fittings

Create a temporary connection point for gauges and other testing equipment

31 products

Sealing

O-Rings

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

13,722 products

Backup Rings

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

360 products

Tube Fitting Gaskets

Prevent leaks when connecting sanitary tube fittings

435 products

Drain Gaskets

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

3 products

Cord Stock

Cut to length to create customized seals

671 products

Rope Seals

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

135 products

O-Ring Bonding Kits

Everything needed to make O-rings

51 products

Building and Machinery Hardware

Grommets

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

54 products

Bumpers

Absorb impact to protect equipment and surfaces from dents and scuffs

1,784 products

Surface Guards

Protect walls and other flat surfaces from impact

5 products

Protective Plugs

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

1,009 products

Protective Caps

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

1,069 products

Measuring and Inspecting

O-Ring Gauges

Identify the size of your O-ring

4 products

Fabricating and Machining

Fixture Plate Plugs

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

8 products

Fastening and Joining

Quick-Release Pin Receptacles

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

36 products

Standoff Caps

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

66 products

Quick-Release Pin Retaining Caps

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

Electrical Power, Networking, and Controlling

DIN Rail Caps

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

2 products

Capacitor Boots

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

3 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

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

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

116 products

Tamper-Evident Seal Presses

Squeeze the handles to seal locks on wire tamper-evident seals

8 products