Insulation | McMaster-Carr

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41,693 Products

Heating, Ventilation, and Air Conditioning

Pipe Insulation

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

876 products

Insulation Sheets

Line the walls of furnaces, freezers, ductwork, and buildings to keep heat in or out

256 products

Pipe Insulation Jacketing

Guard pipe insulation from impact, moisture, and corrosion

153 products

Heat Barriers

Protect equipment and surfaces from damage caused by nearby heat sources

26 products

Insulation Fill

Blow into walls to fill gaps in existing insulation, or mix as a filler in insulating cement

1 product

Pipe Insulation Banding

Strap around pipe insulation to keep it in place

14 products

Spray Foam Insulation

Expands to fill in cracks, gaps, and other hollow spaces for a tight seal against drafts and heat

18 products

Insulation Hanger Studs

Press insulation sheets onto the spike to secure them to walls and other flat surfaces

21 products

Pipe Insulation Repair Strips

Patch and protect damaged pipe insulation

3 products

Insulation Fencing

Made of pliable mesh for securing insulation blankets, covers, and jackets

3 products

HVAC Tape

Seal and patch insulation and duct

51 products

Raw Materials

Foam

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

2,550 products

Plastic

A lightweight alternative to metal and glass

7,765 products

Fabric

Use to cover, clean, and insulate objects

122 products

Garolite

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

1,991 products

Rubber

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

10,497 products

Fiberglass

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

159 products

Felt

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

905 products

Aramid

Strong, lightweight, and an excellent thermal insulator; also known as Nomex

10 products

Ceramic

Hard and wear resistant, it also withstands corrosion and high temperatures

61 products

Hard Fiber

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

62 products

Aluminum

Lightweight, easy to machine, and corrosion resistant—all with material certificates for traceability

46 products

Wood

Commonly used to build ramps, crates, and prototypes or to make repairs

12 products

Mica

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

191 products

Lead

A dense insulator often used to shield against radiation and absorb sound and vibration

8 products

Fastening and Joining

Insulating Washers

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

277 products

Washers

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

1,244 products

Cushioning Washers

Cushion joints to dampen vibration and protect them from wear

167 products

Sealing Washers

Prevent fluids from leaking around fasteners

601 products

Lock Washers

Resist vibration to prevent fasteners from loosening

9 products

Finishing Washers

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

14 products

Standoffs

Separate, position, or connect components in assemblies

1,020 products

Spacers

Unthreaded to create space between two surfaces or objects, often to align them

1,437 products

Spring Pins

Squeeze and insert into tight holes to hold parts in place with tension

1,781 products

Thread

Sew pieces of fabric together

2 products

Screwdrivers

Tighten and loosen screws

85 products

T-Handle Keys

To turn fasteners in hard-to-reach spots, there's a long shaft and a grip for your whole hand

16 products

Screw Starters

Grip and start turning screws that are too small to hold or located in hard-to-reach spots

3 products

Nutdrivers

Tighten and loosen nuts and bolts

16 products

Torque Screwdrivers

Apply precise torque as you fasten screws to prevent overtightening

2 products

Adjustable Wrenches

Adjust the jaws to fasten different size nuts, bolts, or workpiece

6 products

Box Wrenches

Grip all sides of a fastener to prevent slipping

6 products

Ratchet Wrenches

Adjust fasteners in tight spaces without removing and repositioning the wrench

2 products

Socket Extensions

Lengthen sockets to turn hard-to-reach fasteners

4 products

Sockets

Turn fasteners with an external drive style without slipping and damaging the drive

11 products

Bit Sockets

Turn fasteners with an internal drive style without slipping and damaging the drive

9 products

Socket Adapters

Make your socket more versatile, from converting the drive to limiting torque

4 products

Torque Wrenches

Avoid overtightening and damaging fasteners by applying a specific torque

5 products

Retaining Ring Pliers

Install and remove rings inside a bore or around a shaft

1 product

Repair and Duct Tape

Permanently join or seal surfaces

46 products

Mounting Tape

Mount everything from signs and panels to carpet and padding

147 products

Masking Tape

Temporarily join or protect surfaces

153 products

TIG Torch Insulators

Seal between TIG nozzles and torches to stop gas from escaping and protect torch parts from heat

11 products

Weld-Backing Tape

Stick to the back of welding seams to contain spatter and prevent gases from weakening the weld

11 products

Welding Cable Covers

Protect the cables on your MIG or TIG guns from weld spatter

6 products

Construction Adhesives

Join a wide range of construction materials, from drywall to carpeting

10 products

Structural Adhesives

Strong enough to replace screws and rivets for many jobs

1 product

Electrical Power, Networking, and Controlling

Wire Sleeving

Bundle wiring and protect from abrasion and heat

878 products

Heat-Shrink Tubing

Apply heat to seal and insulate electrical wiring and connections

811 products

Electrical Tape

Insulate wire and cable splices, wrap wire harnesses, and repair cable jacketing

96 products

Heat-Shrink Tubing End Caps

Seal moisture out of crimped electrical connections

22 products

Cold-Shrink Tubing

Conforms to wire and cable without heat, creating a permanent, watertight seal

17 products

Potting Compounds

Encase electronic assemblies in material that hardens to protect from dust, moisture, and vibration

82 products

Cold-Shrink Tubing End Caps

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

4 products

Heat-Shrink Tubing Splitters

Insulate and seal where wire splits off from cable; also known as breakout boots

23 products

Heat-Shrink Tubing Seal Wrap

Wrap around wire like tape to create a moisture resistant seal before adding heat-shrink tubing

5 products

Terminal Blocks

Create tidy rows of wire connections that you can identify, test, and adjust on the spot

13 products

Terminal Covers

Block out dirt and corrosion to protect battery terminals

17 products

Conductive Tape

Shield cables and electronic components from electromagnetic interference (EMI)

59 products

Cable Repair Resins

Protect and insulate electrical cables and repair damaged insulation

8 products

Electrical Insulating Varnish

Coat wire and other metal electrical parts to protect them from oil, chemicals, and moisture

6 products

Electrical-Insulating Wire Caps

Cover live wire ends to protect against shock from accidental contact

3 products

Thermal Interface Material

Dissipate heat away from electronic components

14 products

Conformal Coatings

Secure and insulate components on circuit boards and other electronics

31 products

Battery-Terminal Washers

Stop battery acid fumes from corroding terminal posts

1 product

Capacitor Boots

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

3 products

Switch Padding

Trigger an emergency stop when robot arms contact a worker or object

4 products

Wire and Cable Strippers

Remove the outer insulation on wire and cable

2 products

Building and Machinery Hardware

Acoustic Insulation

Absorb sound to quiet noisy areas and machines

53 products

Sound Barrier Sheets

Block and reflect noise to keep it from reaching other parts of your facility

16 products

Vibration-Damping Sheets and Tape

Stick to vibrating surfaces such as duct, between parts, or on floor joists to reduce noise

38 products

Sound Barrier Partitions

Stand in noisy areas to block and reflect sound

1 product

Vibration-Damping Coatings

Apply to irregularly shaped equipment and large areas to reduce noise from vibration

2 products

Bumpers

Absorb impact to protect equipment and surfaces from dents and scuffs

1,785 products

Protective Film and Tape

Adhere to surfaces to keep them free of scratches, chemicals, moisture, and germs

93 products

Edge Trim

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

425 products

Surface Guards

Protect walls and other flat surfaces from impact

131 products

Corner Guards

Shield corners on walls and other surfaces from impact

92 products

Tubing Guards

Safeguard pipe, tubing, and other round equipment from impact

5 products

Panel Connecting Trim

Connect two panels while protecting the edges from damage

33 products

Wear Plates

Often used on conveyors to reduce friction where parts bump into equipment to extend service life

19 products

Door Kick Plates

Protect door bases from foot traffic and equipment; also known as armor and mop plates

50 products

Door Edge Plates

Reinforce door edges to guard them against damage from foot traffic and equipment

18 products

Wall Bases

Protect the bottom of walls from foot traffic and impact

12 products

Vibration-Damping Mounts

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

992 products

Vibration-Damping Pads

Place under machinery to reduce vibration and noise, extending service life and protecting floors

149 products

Leveling Mounts

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

201 products

Weatherstripping

Seal gaps around doors, windows, and frames

131 products

Door Drip Guards

Divert rain and snow away from door openings

13 products

Thresholds

Transition between flooring surfaces and reduce gaps between doors and floors

24 products

Threshold Ramps

Create a gradual incline between uneven floor surfaces for wheelchairs and other wheeled equipment

6 products

Ceiling Tile Sound Barriers

Lay over ceiling tiles to block sound

1 product

Ceiling Tiles

Create a new drop ceiling that allows access to pipes and wiring

36 products

Privacy Sprays

Block the view through windows by adding a frosted effect

1 product

Window Film

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

41 products

Strut Channel Routing Saddles

Clip to strut channel to cradle insulated tubing and pipe

6 products

T-Slotted Framing Cable Holders

Route wire, cable, and tubing along T-slotted rails

12 products

Access Panels

Install in ceilings, walls, concrete floors, and tanks to access and inspect inside

7 products

Doors

Everything from single to double to two-way swinging doors

4 products

Sealing

Rope Seals

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

135 products

Edge Seals

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

529 products

Sealants

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

276 products

Backer Rods

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

35 products

Caulk Gun Sleeves

Insulate your caulk gun so contents remain easy to dispense, even in cold weather

1 product

Gasket Tape

Seal openings such as those around windows, enclosures, and pipe flanges to prevent leaks

36 products

Fabricating and Machining

Firebricks

Insulate furnaces to minimize heat loss while adding flame resistance

16 products

$Refractory Cement$

Refractory Cement

Lay firebricks or set and repair cast iron and steel furnaces, heaters, stoves, and boilers

4 products

Firebrick Repair Coatings

Renew heat resistance and performance of worn firebrick

1 product

Scissors

Cut through a wide range of materials from paper and plastic to carpet and Kevlar

1 product

Pipe, Tube, and Hose Cutters

Make clean cuts in pipe, tube, hose, and conduit

1 product

Cable Cutters

Slice through electrical, data, armored, coaxial, and fiber-optic cable

1 product

End Cutters

Wide jaws cut steel wire, nails, and small rivets close to the surface; also known as nippers

1 product

Bolt Cutters

Snip metal chain, bolts, rods, rivets, wire, and padlocks

2 products

Wire-Gripping Pliers

Pull, bend, and cut wire; also known as lineman's pliers

6 products

Pliers Sets

A variety of pliers styles and sizes for whatever job comes up

2 products

Picks

Hold, separate, and position small parts such as wire and springs

5 products

Wire-Forming Pliers

Loop and bend wire; also known as round-nose pliers

1 product

Slip-Joint Pliers

Adjust the pivot point to switch between two different jaw opening sizes

2 products

Adjustable Pliers

A range of jaw positions for turning fasteners and gripping workpieces

7 products

Long-Nose Pliers

Grab, bend, and position wire and other small parts

8 products

3D Printer Build Surfaces

Stick on top of printer beds for more accurate parts than those made on bare beds

30 products

Pry Bars

Slide under heavy objects to pry, lift, and position them

1 product

Hacksaws

Blades have more teeth per inch than handsaws to cut through metal and plastic more smoothly

1 product

Files

Debur, polish, and sharpen nearly any material

1 product

Safety Equipment

Protective Clothing Tape

Patch rips and seal gloves, boots, and respirators to clothing

1 product

Heat-Resistant Blankets

Drape these blankets over machinery or hang them from walls to protect your workspace from sparks

10 products

Electrical Protection Blankets

Wrap around power lines and electrical equipment to shield workers from high voltage

6 products

Fire Stops

Prevent fire and smoke from passing through holes in fire-resistant walls and floors

59 products

Facility and Grounds Maintenance

Protective Coatings

Shield surfaces from the surrounding environment

4 products

Tool Sets

Secure fasteners and complete a variety of other maintenance tasks

1 product

Sink Pipe Covers

Prevent burns from hot water pipes

3 products

Fluid Handling

Thermocouple Insulating Sleeves

Protect thermocouple wire in extreme-temperature applications, such as die casting and heat treating

13 products

Thermocouple Connector Covers

Shield thermocouple connectors from dust and debris

1 product

Tubing

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

39 products

Wraparound Heaters

Wrap around drums, pails, and other containers to indirectly warm their contents

30 products

Material Handling

Bubble Wrap

Air bubbles cushion fragile items better than foam to protect them while shipping and storing

1 product

Shipping Box Liners

Line cardboard boxes to keep the items inside at a consistent temperature

13 products

Envelopes

Standard, bubble-lined, and paper-padded for mailing or shipping documents and other items

2 products

Low-Friction Tape

Create a slippery lining to keep parts moving or use as a release surface on heat sealers and molds

604 products

Conveyor Brushes

Position items on conveyor belts and wipe off debris

136 products

Conveyor Guides

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

21 products

Conveyor Brush Holders

Mount conveyor brushes at point of use

60 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

Pipe Cradles

Add support to prevent insulation from tearing when routing insulated pipe through loop hangers

9 products

Lubricating

Grease

Thicker than oil to evenly lubricate surfaces and stay in place

29 products

Dry-Film Lubricants

Goes on wet and dries to form a nonstick film that lubricates surfaces without attracting dust

3 products

Coolants

Apply while machining to dissipate heat, remove shavings, and prevent corrosion

2 products

Measuring and Inspecting

Insulation Testers

Measure insulation quality in motors, generators, and other electrical equipment

9 products

Inspection Mirrors

Reach around corners and obstructions to inspect hard-to-see areas

1 product

Lighting

Black-Out Paper and Tape

Block out stray and unwanted light

10 products

Light Filters

Change light color, reduce glare, or filter out light

13 products

Power Transmission

Linear Bearings

Minimize friction as parts move along a shaft

66 products

Ball Bearings

Create less friction than other bearings for use at high speeds

27 products