Plastic Seals | McMaster-Carr

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System of Measurement

Seal ID

Material

Aramid/Fiberglass Fabric

Calcium Sulfate (Gypsum)

Cotton/Polyester Fabric

Methyl Isobutyl Ketone (MIBK)

Parachlorobenzotrifluoride (PCBTF)

Buna-N/Neoprene/Vinyl Foam

Carbon-Filled Polyethylene

Cross-Linked Polyethylene Foam

EPDM/Neoprene/Polyethylene Foam

Fiberglass-Reinforced Polyester Fabric

Silicone/Acrylic Plastic

Toluene (Methylbenzene)

Color

Black/Fluorescent Yellow

Width

Seal OD

Thickness

Shape

For Use With

Bonded Polyester Strapping

Bonded Polyester/Polypropylene Strapping

Maximum Temperature

Backing Type

Length

Bore Diameter

Mount Type

Hardness Rating

Shaft Diameter

Minimum Temperature

Cell Type

RoHS

Compliant with Exemptions

Not Compliant

Cross Section Shape

Rectangle

Round

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

REACH

10,063 Products

Sealing

Piston Seals

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

43 products

Shaft Seals

Prevent leaks in motors, pumps, and gearboxes

80 products

Spring-Loaded Seals

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

54 products

Rod Seals

Maintain pressure inside cylinders and prevent fluid leaks

20 products

Buffering Seals

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

22 products

Packing Seals

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

145 products

Packing Seal Lubricating Rings

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

8 products

Wear Rings

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

54 products

Rod Wipers

Scrape dirt off rods to keep the inside of cylinders clean

7 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

Gasket Tape

Stick in place around doors, enclosures, and vents to create a leak-resistant seal

56 products

Tube Fitting Gaskets

Prevent leaks when connecting sanitary tube fittings

109 products

EMI/RFI Shielding Gaskets

Fit around enclosure doors or data connectors to prevent inaccurate signals and flickering displays

72 products

Gasket Material

Cut custom shapes and sizes to fill gaps between flat surfaces

77 products

Pipe Gaskets

Form tight seals when connecting flanged pipe fittings

441 products

Hose Coupling Gaskets

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

21 products

Made-to-Order Gaskets

Send your exact specifications to get gaskets that fit precisely between surfaces

4 products

Manway Gaskets

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

4 products

Drum Plug Gaskets

Form a tighter seal in drum openings than with a drum plug alone

2 products

Edge Seals

Block dust, water, and wind from entering the gaps around doors and windows

40 products

O-Rings

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

968 products

Backup Rings

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

122 products

Sealants

Fill and seal gaps in metal, plastic, wood, and other materials

62 products

Thread Sealants

Create a seal between threaded connections to prevent loosening from vibration

65 products

Backer Rods

Insert into gaps before caulking to reduce how much sealant you need and improve adhesion

35 products

Backer Rod Insertion Tools

Quickly set foam backer rods in caulk joints at a consistent depth without puncturing them

1 product

Caulk Guns

Cartridge, sausage-pack, and bulk-load caulk guns

11 products

Caulk Gun Nozzles

Attach to caulk guns to change the shape and amount of sealant that's dispensed

4 products

Building and Machinery Hardware

Grommets

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

230 products

Bumpers

Absorb impact to protect equipment and surfaces from dents and scuffs

7 products

Edge Trim

Install on panels, boards, signs, and mirrors to protect edges from impact

175 products

Surface Guards

Protect walls and other flat surfaces from impact

77 products

Corner Guards

Shield corners on walls and other surfaces from impact

43 products

Wall Bases

Protect the bottom of walls from foot traffic and impact

11 products

Weatherstripping

Seal gaps around doors, windows, and frames

46 products

Door Drip Guards

Divert rain and snow away from door openings

3 products

Thresholds

Transition between flooring surfaces and reduce gaps between doors and floors

5 products

Protective Plugs

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

467 products

Protective Caps

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

833 products

T-Slotted Framing and Fittings

The most versatile system, attach fittings along the continuous slots to build virtually anything

17 products

Window Film

Apply to windows for privacy, insulation, less glare, and a lower chance of shattering

39 products

Vibration-Damping Mounts

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

30 products

Raw Materials

Foam

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

1,780 products

Felt

Thicker and more absorbent than fabric for insulating, polishing, cushioning, and gasketing

25 products

Mica

An electrical insulator that resists high temperatures; use in circuit breakers and heating elements

25 products

Rubber

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

99 products

Fastening and Joining

Sealing Washers

Prevent fluids from leaking around fasteners

57 products

Insulating Washers

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

10 products

Cushioning Washers

Cushion joints to dampen vibration and protect them from wear

72 products

Fastener Assortments

Keep a variety of common screws, nuts, and washers on hand

1 product

Retaining Rings

Hold components on a shaft

12 products

Adhesives

Bond surfaces together

314 products

Threadlockers

Coat threads on threaded fasteners to prevent loosening from impact and vibration

164 products

Retaining Compounds

Fill gaps to bond shafts, bearings, press-fit assemblies, and other cylindrical metal parts

80 products

Tape

Bind, seal, and mark surfaces

1,445 products

Electrical

Manual Switches

Everything from toggle, push-button, and rocker switches to foot switches

1 product

Wire Sleeving

Bundle wiring and protect from abrasion and heat

573 products

Electrical Enclosure Plugs

Block or seal holes in outlet boxes and enclosures to keep out debris, dust, and moisture

13 products

Heat-Shrink Tubing

Apply heat to seal and insulate electrical wiring and connections

3 products

DIN Rail Caps

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

2 products

Conformal Coatings

Secure and insulate components on circuit boards and other electronics

17 products

Wire Sleeving Installation Tools

Insert wire and hose into corrugated, spiral wrap, or wraparound sleeving

5 products

Solder Mask

Temporarily shield circuit boards from solder, flux, and high temperatures

4 products

Data Port Locks

Block USB or Ethernet ports from unauthorized use

9 products

Data Port Plugs

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

1 product

Facility and Grounds Maintenance

Surface Fillers

Repair chips, cracks, and tears in various surfaces

27 products

Paint

Renew, enhance, protect, and change the color of surfaces

60 products

Protective Coatings

Shield surfaces from the surrounding environment

45 products

Powder Coating Sprayers

Evenly apply powder coatings to small or large parts

2 products

Paint Primers

Extend the life of paint and coatings by preparing surfaces beforehand

23 products

Touch-Up Paint Pens

Cover scratches in paint and coatings

2 products

Urinal Sealing Rings

Prevent leaks where urinals mount to the wall

1 product

Urinal Flanges

Connect a urinal to your drainage system

2 products

Toilet Sealing Rings

Prevent leaks where toilets mount to the floor or wall

3 products

Floor Drain Trap Seals

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

4 products

Rebar Caps

Brightly colored to alert workers to exposed rebar and pipe

4 products

Roof Coatings

Form a water-resistant layer to restore and reinforce your roof

3 products

Fluid Handling

Pipe and Pipe Fittings

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

13 products

Hose and Hose Fittings

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

85 products

Tube and Tube Fittings

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

69 products

Expansion Plugs

Seal pipe and tubing lines when checking for leaks

70 products

Strainers

Install next to valves and pumps to catch debris in your line

6 products

Gauge Guards

Shield gauges from corrosive liquids and gases; also called diaphragm seals

6 products

Thermal Paste

Mold heat cable to pipe, eliminating air gaps that lead to heat loss and heater failure

13 products

Communication

Tamper-Evident Seals

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

37 products

Material Handling

Conveyor Brushes

Position items on conveyor belts and wipe off debris

188 products

Conveyor Brush Holders

Mount conveyor brushes at point of use

1 product

Conveyor Guide Mounting Rod Caps

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

7 products

Conveyor Guides

Direct and position items on conveyors while keeping them from falling off

3 products

Screw Conveyors

Push material through fixed troughs

7 products

Dock Door Seals

Close the gap between dock doors and trailers to keep heated or cooled air in and dust out

9 products

Dock Door Shelters

Wrap around trailers where they meet dock doors to shield out the elements better than seals

4 products

Shipping Pails

Ship up to 12 gallons of hazardous liquids or solids

3 products

Strapping Buckles

Hold strapping in light duty and low-tension applications

2 products

Shipping Jugs

Ship up to seven gallons of hazardous liquids and dispense with control through the narrow opening

8 products

Containers, Storage, and Furniture

Dust Covers

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

16 products

Tank Patches

Spin with a handheld electric router to seal holes in plastic tanks and containers

2 products

Syringe Caps

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

13 products

Heating, Ventilation, and Air Conditioning

Pipe Insulation

Fit around pipe, tubing, and tanks to reduce heat loss or condensation

2 products

Foam Insulation Coatings

Shield foam pipe insulation from moisture, UV rays, and ozone

1 product

Safety Equipment

Bearing Guards

Shield bearings from dirt, and protect fingers and tools from moving parts

20 products

Drum Patches

Patch drum leaks to prevent their contents from spilling

2 products

Fabricating and Machining

Seal Pullers

Remove the seals around bearings

2 products