Hoops | McMaster-Carr

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Corrosion-Resistant Coated

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D.O.T. Compliant 49 CFR 393.104

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Performance

Electrically Insulating

Pipe Size

Shape

Minimum Temperature

34,140 Products

Most Likely Products

Chain Rings

Join chains and add connectors for binding, towing, and lifting

135 products

Tie-Down Rings

Use as fixed anchor points

84 products

Duct Flanges

Mount on equipment to start a run of duct, or create a secure joint between two sections

169 products

Loop Clamps

Hold pipe snug against the mounting surface to prevent movement that may cause breakage

478 products

Routing Clamps

Secure routed lines of pipe, tubing, and conduit

690 products

Split Rings

Secure clevis pins, connect components, or add a pull handle; also known as key rings

67 products

All Results

Material Handling

Chain Rings

Join chains and add connectors for binding, towing, and lifting

135 products

Chain Connecting Links

Attach fittings to lift components or bind, tie down, and pull items

51 products

Quick Links

Join rope, cable, and chain to secure loads

116 products

Hoist Rings

Pivot to resist stress that would bend or break an eyebolt when lifting at an angle

382 products

Ring Links

Bend, hammer, or twist closed to connect chain links and attach fittings

47 products

Snap Hooks

Spring, slide, or press open to quickly connect rope and chain

276 products

Loop Clamps

Hold pipe snug against the mounting surface to prevent movement that may cause breakage

478 products

Routing Clamps

Secure routed lines of pipe, tubing, and conduit

690 products

Routing Clamp Rails

Use with rail-mount routing clamps to route pressurized lines in hydraulic systems

14 products

Pipe Hangers

Suspend pipe, conduit, and tube from rods, hooks, and straps

435 products

Pipe Standoff Clamps

Secure pipes in sanitation drain applications and keep them from touching the mounting surface

22 products

Routing Rings

Suspend wire and cable by feeding it through the eyehole

40 products

Routing Ring Bases

Temporarily attach routing rings to steel and iron surfaces with a magnet

2 products

Riser Clamps

Wide flanges support vertical pipe passing through floors

30 products

Routing J-Hooks

Hang, adjust, and remove bundles of cable through the wide opening more easily than with routing rings

16 products

Railing Clamps

Clamp onto metal tubes to hang lighting fixtures, threaded rod, and equipment

15 products

Tie-Down Rings

Use as fixed anchor points

84 products

Webbing Rings

Add looped connection spots

42 products

L-Track Mounting Studs

Mount threaded accessories onto L-Tracks

3 products

L-Track Tie-Down Rings

Add pivoting connection points to L-Tracks to secure loads in different directions

3 products

E-Track D-Rings

Add flexible connection points to E-Tracks for securing loads in different directions

3 products

Ratchet Straps

Connect to anchor points and tighten incrementally to increase the tension, holding cargo in place

48 products

Tie-Down Washers

Angled sides align and hold tie-down straps

5 products

Fastening and Joining

Split Rings

Secure clevis pins, connect components, or add a pull handle; also known as key rings

67 products

Washers

Nearly every size and shape imaginable, from flat washers to clipped to curved

5,182 products

Sealing Washers

Prevent fluids from leaking around fasteners

752 products

Lock Washers

Resist vibration to prevent fasteners from loosening

1,659 products

Insulating Washers

Isolate screws from electrical current and prevent corrosion from mating different metals

277 products

Cross-Bracing Washers

Connect cross-bracing rods or cables to structural beams; also known as hillside washers

20 products

Cushioning Washers

Cushion joints to dampen vibration and protect them from wear

167 products

Leveling Washers

Curved or tapered to compensate for uneven mounting surfaces

265 products

Finishing Washers

Screw heads sit flush to prevent snagging and to create a neat, finished appearance

156 products

Retaining Rings

Hold components on a shaft

2,320 products

Cotter Pins

Secure the ends of clevis pins and shafts to keep components in place

8 products

Hog Rings

Squeeze closed using hog ring pliers to seal sacks, repair fences, and clip on tags

15 products

Socket Retaining Rings

Secure sockets and adapters to impact tools

39 products

Heating, Ventilation, and Air Conditioning

Duct Flanges

Mount on equipment to start a run of duct, or create a secure joint between two sections

169 products

Sealing

O-Rings

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

13,865 products

Backup Rings

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

313 products

O-Ring Bonding Kits

Everything needed to make O-rings

7 products

Manway Gaskets

Create a tight seal between the nozzle and lid of tank car manways

8 products

Tube Fitting Gaskets

Prevent leaks when connecting sanitary tube fittings

428 products

Pipe Gaskets

Form tight seals when connecting flanged pipe fittings

1,389 products

Hose Coupling Gaskets

Form tight seals on cam-and-groove, grip-lock, and twist-claw hose connections

94 products

Hose Washers

Place inside nozzles and spigots to prevent leaks in an attached hose

10 products

Boiler Gaskets

Resist heat and steam to form a leak-resistant seal around closures on boilers

44 products

Drain Gaskets

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

3 products

Spring-Loaded Seals

Seal rods and pistons with a wider range of temperature and chemical resistance than U-cup seals

54 products

Cushioning Seals

Reduce wear and noise in air-powered cylinders by blocking the piston from hitting the cylinder body

5 products

Head Seals

Maintain a seal even under fluctuating pressure; more reliable than an O-ring with a backup ring

10 products

Shaft Seals

Prevent leaks in motors, pumps, and gearboxes

533 products

Wear Rings

Guide rods and pistons to prevent uneven wear and extend the life of seals

54 products

Wear Ring Stock

Cut to make wear rings that fit any rod or bore to prevent uneven wear and extend the life of seals

12 products

U-Cup Seals

With a lip on both the inside and outside edges, they can be used for sealing rods and pistons

198 products

Shaft Repair Sleeves

Cover worn shafts with a smooth and protective sealing surface without machining

21 products

Piston Seals

Prevent leaks inside pistons by creating a seal against the cylinder bore

57 products

Rod Seals

Maintain pressure inside cylinders and prevent fluid leaks

50 products

Packing Seals

Fill in gaps around pump shafts, valve stems, and agitators to prevent leaks

47 products

Buffering Seals

Protect hydraulic cylinders from pressure spikes and shock in high-pressure applications

22 products

Rod Wipers

Scrape dirt off rods to keep the inside of cylinders clean

109 products

Cord Stock

Cut to length to create customized seals

396 products

Packing Seal Lubricating Rings

Install between layers of packing seals to distribute lubricants evenly; also known as lantern rings

8 products

Safety Equipment

Fall-Arrest Anchors

Fasten to a beam or ceiling and your fall-arrest lanyard to catch you if you fall

23 products

Tool Tether Attachments

Slide onto tools to connect them to equipment lanyards

10 products

Tool Tether Anchors

Prevent tools from falling while working at height

3 products

Fall-Rescue Kits

Everything you need to rescue a person who is suspended after a fall

2 products

Chain Barrier Links

Split in half and snap back together to securely connect lengths of chain

6 products

Communication

Tag Rings

Loop onto tags to attach them to lanyards, key rings, and other objects

73 products

Name Badge Holders

Protect and display name badges on clips, lanyards, and bands

1 product

Building and Machinery Hardware

Strut Channel Framing and Fittings

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

474 products

Grommets

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

943 products

Vibration-Damping Mounts

Attach to machinery to reduce vibration and noise and extend service life

119 products

Key Racks

Store and quickly identify keys with color-coded and labeled tags

2 products

Electrical Power, Networking, and Controlling

Electrical-Terminal Washers

Prevent wires from slipping out from under screw heads to keep electrical connections intact

6 products

Terminal and Splice Kits

Maintain a supply of extra terminals and splices to join and terminate wire

17 products

Terminals

Attach wire endings everywhere from circuit breaker panels to batteries

342 products

Heat-Shrink Tubing

Apply heat to seal and insulate electrical wiring and connections

3 products

Battery-Terminal Washers

Stop battery acid fumes from corroding terminal posts

1 product

Electrical Enclosure Pole Mounts

Everything you need to secure enclosures to round poles or beams

14 products

Electrical Enclosure Floor Stands

Mount enclosures to the floor above hazards such as water

8 products

Jumper Cords

Ready to connect with a terminal at one or both ends

5 products

Measuring and Inspecting

O-Ring Gauges

Identify the size of your O-ring

4 products

Fabricating and Machining

Clamp Holding Washers

Replace worn washers on open-arm toggle clamps to keep holding screws in place

12 products

Raw Materials

Foam

Pockets of air make it lighter in weight than rubber; good for packing, insulating, and sealing

21 products

Fluid Handling

Pipe and Pipe Fittings

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

24 products

Tube and Tube Fittings

Typically more flexible than pipe for carrying liquids and gases in short runs around equipment

33 products

Power Transmission

Cylinder Rod Glands

Replace the rod gland on hydraulic cylinders

13 products

Hydraulic Cylinder Seals

Replace seals on the piston or rod end of hydraulic cylinders

36 products

Rod End Seals

Keep dirt out and lubrication in to extend the life of rod ends

16 products

Bearing Lock Washers

Lock bearing nuts in place to prevent loosening due to vibration

103 products

Facility and Grounds Maintenance

Toilet Spuds

Connect wall-mount toilets to a flush valve

14 products

Urinal Spuds

Connect wall-mount urinals to a flush valve

5 products

Toilet Tank-to-Bowl Gaskets

Create a tight seal between a toilet tank and bowl

2 products

Toilet Sealing Rings

Prevent leaks where toilets mount to the floor or wall

8 products

Flush Valve Replacement Parts

Replace virtually any part in the most common flush valve brands

6 products

Urinal Sealing Rings

Prevent leaks where urinals mount to the wall

2 products

Manhole Riser Rings

Raise a manhole cover to make it level with the surface

4 products

Urinal Flanges

Connect a urinal to your drainage system

2 products