End Caps | McMaster-Carr

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12,364 Products

Building and Machinery Hardware

Protective Caps

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

1,070 products

Protective Plugs

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

1,009 products

T-Slotted Framing End Caps

Snap onto T-slotted rail ends to cover sharp edges and keep out dust

39 products

T-Slotted Framing Mounts

Connect tubes, switches, casters, and other components to T-slotted rails

18 products

T-Slotted Framing Seals

Fill gaps around doors and panels to keep air, dust, and liquid out of T-slotted framing structures

44 products

T-Slotted Framing Covers

Block dust and debris from entering T-slotted rails; add a wear- or slip-resistant surface

28 products

Strut Channel Framing and Fittings

Secure fittings in the U-shaped channel to route conduit and pipe or build other structures

111 products

Press-Fit Framing and Fittings

Set up temporary partitions, guards, and displays using only a hammer

2 products

Locking-Slotted Framing and Fittings

Make platforms, bases, and other structures that stand up to more movement than T-slotted framing

1 product

Slip-On Framing and Fittings

Insert rails into fittings and tighten screws to make guards, railings, and racks

25 products

Bolt-Together Framing and Fittings

Fasten through equally spaced holes to build and adjust guards, tables, and racks

1 product

Clamp-On Framing and Fittings

Two-piece fittings let you modify assembly stations, conveyors, and racks without dismantling them

1 product

Protective Feet

Add to furniture and light equipment to protect floors from scratches and wear

279 products

Leveling Mount Inserts

Slip onto equipment and furniture to add threaded-stud leveling feet

113 products

Leveling Mounts

Level machines and workbenches on uneven surfaces, reduce vibration, and protect floors

10 products

Fluid Handling

Pipe and Pipe Fittings

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

2,496 products

Tube End Caps

Cover the ends of tube to keep out dirt and debris

394 products

Tube End Plugs

Insert into the ends of tube to keep out dirt and debris

260 products

Tube Fittings

Make threaded, push to connect, barbed, and other types of connections between lengths of tube

696 products

Hose and Hose Fittings

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

3,808 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

Thermocouple Connector Covers

Shield thermocouple connectors from dust and debris

1 product

Breather Vents

Maintain even pressure and vacuum as temperatures change by allowing airflow in tanks and enclosures

5 products

Heating, Ventilation, and Air Conditioning

Duct and Fittings

Circulate air through HVAC systems using round, rectangular, and fabric duct

145 products

Chimney Pipe and Fittings

Exhaust hot air and fumes from boilers, furnaces, and stoves

20 products

Air Conditioner Service Valve Caps

Seal off AC service valves to prevent refrigerant from leaking out

2 products

Electrical Power, Networking, and Controlling

Heat-Shrink Tubing End Caps

Seal moisture out of crimped electrical connections

22 products

Cold-Shrink Tubing End Caps

Seal crimped electrical connections without heat or tools to protect against moisture

4 products

DIN Rail Caps

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

2 products

DIN Rail Stops

Keep components such as terminal locks and relays from shifting on rails

11 products

DIN Rail Spacers

Slide along rails to separate and organize terminal blocks, relays, and other components

1 product

Electrical Connector Caps

Protect data connectors when not in use

78 products

Data Port Plugs

Keep dust, debris, and moisture out of unused computer ports

3 products

Data Port Locks

Block USB or Ethernet ports from unauthorized use

9 products

Electrical Connector Clips

Attach to data connectors to lock them in place, repair them, or color code them

3 products

Battery Vent Caps

Flip open to check water levels and fill wet-cell batteries

1 product

Capacitor Boots

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

3 products

Electrical-Insulating Wire Caps

Cover live wire ends to protect against shock from accidental contact

3 products

Fabricating and Machining

Clamp Holding Screw Tips

Cover metal holding screws to protect workpieces from scratches

12 products

Tweezer Tip Caps

Protect tweezer tips from damage

1 product

Vise Jaw Liners

Place over vise jaws to protect workpieces from marring

50 products

Fixture Plate Plugs

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

8 products

Tooling Ball Covers

Protect tooling balls when not in use

3 products

Fastening and Joining

Standoff Caps

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

66 products

Quick-Release Pin Receptacles

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

36 products

Quick-Release Pin Retaining Caps

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

23 products

Containers, Storage, and Furniture

Stacking Caps and Targets

Turn the ends of posts into stackable shelving and rack systems

6 products

Syringe Caps

Cover syringe tips when not in use to protect them and prevent leaks

13 products

Pegboard Hook End Caps

Slide onto the end of pegboard hooks to protect items from scratches

2 products

Dust Covers

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

16 products

Material Handling

Conveyor Guide Mounting Rod Caps

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

7 products

Valve Stem Caps

Keep dust and debris out of tire valves

2 products

Safety Equipment

Fire Hydrant Caps

Pair with a hook-style spanner wrench to quickly cover and uncover fire hydrants

6 products

Fire Hydrant Plugs

Pair with a hook-style spanner wrench to quickly seal fire hydrants and washdown equipment

3 products

Facility and Grounds Maintenance

Drain Cleanouts

Create an access point to inspect and clean floor drain pipelines

3 products

Faucet Hole Covers

Close off unused faucet holes intended for soap dispensers and side sprayers

2 products

Rebar Caps

Brightly colored to alert workers to exposed rebar and pipe

4 products

Lubricating

Grease Fitting Caps

Protect grease fittings from dirt, debris, and moisture

14 products

Coolant Hose and Fittings

Build a custom system to deliver coolant, cutting oil, water, or air in any direction

6 products

Power Transmission

Die Spring Screw Caps

Brace springs and control tension in die sets while simplifying maintenance

10 products

Communication

Tamper-Evident Seals

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

2 products