Plastic Circles | McMaster-Carr

Filter by

Material

For Use On

System of Measurement

OD

ID

Color

Shape

Diameter

Length

Thickness

Maximum Temperature

For Use With

USMCA Qualifying

Hardness

Performance

REACH Compliance

Hardness Rating

RoHS Compliance

Screw Size

DFARS Compliance

Minimum Temperature

Width

Body Material

How can we improve?

10,491 Products

Raw Materials

Plastic

A lightweight alternative to metal and glass

Foam

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

Rubber

Compresses and bounces back to shape; often used for sealing, cushioning, and shock absorbing

Garolite

A strong, machinable alternative to metal and plastic widely used in circuit boards and gears

Carbon Fiber

The strongest composite we offer; comparable in strength to 6061 aluminum but lighter in weight

Fiberglass

A lightweight alternative to metal and wood widely used in electrical and structural applications

Hard Fiber

Chemically treated to be hard and dense, this is the easiest composite to machine in our offering

Building and Machinery Hardware

Bumpers

Absorb impact to protect equipment and surfaces from dents and scuffs

Antislip Tape

Add traction to floors, stairs, and other walking surfaces

Vibration-Damping Mounts

Vibration-Damping Mounts

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

Lockouts

Ensure that machines stay turned off to prevent accidents during maintenance work

Fastening and Joining

Tape

Bind, seal, and mark surfaces

Washers

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

Sealing Washers

Sealing Washers

Prevent fluids from leaking around fasteners

Cushioning Washers

Cushioning Washers

Cushion joints to dampen vibration and protect them from wear

Finishing Washers

Finishing Washers

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

Lock Washers

Resist vibration to prevent fasteners from loosening

Insulating Washers

Insulating Washers

Isolate screws from electrical current and prevent corrosion where fasteners attach

Shims

Level, align, and adjust spacing on fasteners, shafts, and machine components

Anchors

Secure structural joints in concrete, brick, and other building materials

Dowel Pins

Align parts before assembly or use as a pivot, shaft, or hinge to join moving components

Standoffs

Threaded to separate or connect parts as well as position components in assemblies

Retaining Rings

Retaining Rings

Hold components on a shaft

Screw Nails

Drive like nails but hold like screws in drilled holes in wood, plastic, drywall, and masonry

Hook and Loop

Press to interlock pieces and fasten materials together

Snap-Together Fasteners

Snap-Together Fasteners

Mate the mushroom-shaped heads to join materials together with more holding power than hook and loop

Fabricating and Machining

Precision Knife Blades

Precision Knife Blades

Replace the blade in a precision knife

Buffing Wheels and Pads

Buffing Wheels and Pads

Connect to a buffer or polisher to remove surface imperfections

Buffing Kits

Everything you need to remove scratches and surface imperfections with a buffer or polisher

Router Guides

Make precise circular or intricate cuts with routers

Rotary Tool Circle Cutters

Rotary Tool Circle Cutters

Attach to rotary tools to cut circular holes in a variety of materials

Rotary Tool Cutoff Wheels

Rotary Tool Cutoff Wheels

Replace the cutoff wheel on your Dremel rotary tool

Rotary Tool Blades

Rotary Tool Blades

Replace the blade on your Dremel rotary tool

Wire Brushes

Scrub by hand or connect to power tools to clean, polish, deburr, and remove rust

Grinding Bits

Pair with grinders for light material removal and precision grinding

Lapping Film

Polish workpieces without the mess of pastes and slurries

Sanding Discs

Add to sanders, floor buffers, and other tools to smooth out workpieces and remove paint and rust

Cutoff Saw Wheels

Cutoff Saw Wheels

Replace the wheel on your cutoff saw

Cutoff Wheels

Install in grinders to cut through metal, concrete, and ceramics

Grinding Wheels

Grinding Wheels

Add to grinders to remove material from work surfaces using abrasion

Communication

Tags

Hang throughout facilities to convey information

Labels

Stick onto items to identify or convey information about them

RFID Tags

Track the location of inventory in your facility; pair with RFID reader/writers

Legend Plates

Mark switches and lights on control panels for easy identification

Fire Hydrant Markers

Fire Hydrant Markers

Label fire hydrants to indicate their flow rate or status

Floor Decals

Stick to the floor to give instructions or direct traffic in and around your facility

Stencils

Paint over or trace to create everything from custom messages to drafting designs

Signs

Everything from accident prevention to traffic control to exit signs

Sealing

O-Rings

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

Backup Rings

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

Tube Fitting Gaskets

Tube Fitting Gaskets

Prevent leaks when connecting sanitary tube fittings

Wear Rings

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

Facility and Grounds Maintenance

Floor Drain Covers

Floor Drain Covers

Put a lid on open drains to prevent accidents and injuries

Paint Can Lid Rings

Paint Can Lid Rings

Fit around the entire rim of paint cans to secure lids more tightly than clips

Safety Equipment

Safety Mirrors

See what's happening around corners, at intersections, down aisles, and over counters

Power Transmission

Springs

Apply and absorb force with compression, die, extension, torsion, and disc springs

Measuring and Inspecting

Metal Detector Calibration Kits

Metal Detector Calibration Kits

Test the sensitivity of food-processing metal detectors

Levels

Ensure surfaces are completely horizontal or vertical

Containers, Storage, and Furniture

Petri Dishes

Grow bacteria and other microorganisms

Fluid Handling

Filter Mesh

Strain particles out of various substances

Heating Pads

Stick to drums, pails, and other containers to indirectly warm their contents

Sintered Filters

Sintered Filters

Tiny holes let particles such as air, gas, and vapor pass through while trapping contaminants

Tube Fitting Markers

Tube Fitting Markers

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

Material Handling

Routing Rings

Suspend wire and cable by feeding it through the eyehole

Lighting

Light Pipes

Concentrate and direct light from the bulb on a circuit board to a display

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)