3 1/2" Tubing | McMaster-Carr

Combining the heat resistance of metal with the flexibility of fabric, this fiberglass hose has a special coating that stands up to high temperatures.

Blo-R-Vac Flexible Duct Hose for Dust

A good general purpose hose for blowing and vacuum applications, this hose is for use with grinding dust, sawdust, and lint.

High-Temperature Flexible Duct Hose for Dust

The neoprene coating on this hose holds up under high heat.

Blo-R-Vac Flexible Duct
Hose with Wear Strip for Dust

This general purpose hose for blowing and vacuum applications has a thick PVC wear strip that protects against damage caused by dragging.

Abrasion-Resistant Very Flexible Duct Hose for Dust

A blend of rubber and plastic creates a hose that's flexible, yet tough enough to handle abrasive particles such as grinding dust and sawdust. It's also known as TPU (thermoplastic polyurethane).

Static-Control Very Flexible Duct Hose for Dust

The neoprene coating on this hose contains carbon to dissipate static when hose is installed in a grounded system.

Static-Control Duct Hose for
Metal Chips and Shavings

SBR (styrene butadiene rubber) is blended with carbon, which dissipates static electricity without the need for a grounding wire.

Extra-Strength High-Vacuum Duct
Hose for Metal Chips and Shavings

The strongest rubber duct hose we offer, this SBR (styrene butadiene rubber) hose is reinforced with yarn and has a metal spiral.

Crush-Resistant Duct Hose for Liquids

Step on or drive over this hose without causing damage.

Metal

Low-Carbon Steel Round Tubes

Also known as mild steel, low-carbon steel is easy to machine, form, and weld. It's widely fabricated into parts that don’t require high strength, such as frames, supports, and conduit.

Easy-to-Weld 4130 Alloy Steel Round Tubes

Also known as chrome-moly steel, these 4130 alloy steel round tubes have low carbon content for good weldability. They’re often used for roll cages and frames.

Multipurpose 4140 Alloy Steel Round Tubes

Made from alloy steel, also known as chrome-moly steel, these tubes resist fracturing from repeated stress. They’re used for a wide range of parts, including cylinders, rollers, and frames.

Easy-to-Machine Gray Cast Iron Round Tubes

Gray cast iron machines faster with less wear on cutting tools than most types of steel. It's often fabricated into gears, pulleys, rollers, and bushings.

Multipurpose 304 Stainless Steel

From cookware to chemical-processing equipment, 304 stainless steel is a good all-around choice for a wide range of applications.

Corrosion-Resistant 316 Stainless Steel

The addition of molybdenum gives 316 stainless steel excellent corrosion resistance. Use it in a variety of marine and chemical-processing applications.

Multipurpose 6061 Aluminum Round Tubes

The most widely used aluminum, 6061 is fabricated into everything from pipe fittings and containers to automotive and aerospace parts. It is strong and corrosion resistant, plus it's easy to machine and weld.

Polished Multipurpose 6061 Aluminum Round Tubes

Polished on the outside to a #8 reflective, mirror-like finish, these tubes have no visible grain lines.

High-Strength 2024 Aluminum Tubes

While 2024 aluminum was initially designed for structural components in aircraft, it's now widely used when a high strength-to-weight ratio is needed, such as for gears, shafts, and fasteners. It offers similar performance to 7075 aluminum, but it’s not as strong.

932 Bearing Bronze Tubes

Offering excellent antifriction qualities, 932 bronze also offers good strength and wear resistance. It's also known as SAE 660 and is often used for bearings, bushings, and thrust washers.

Plastic

Clear Scratch- and UV-Resistant Cast Acrylic Tubes

Cast acrylic is easier to machine than extruded acrylic. It's comparable to Lucite and Plexiglas® Acrylic.

Clear Scratch- and UV-Resistant Acrylic Tubes

This extruded acrylic offers similar performance as cast acrylic at a lower cost.

Clear Impact-Resistant Polycarbonate Tubes

At only half the weight of glass, polycarbonate maintains excellent impact resistance across a wide temperature range. It's comparable to Lexan, Hyzod, Tuffak, and Makrolon.

Easy-to-Machine Wear-Resistant Cast Nylon Tubes

This cast nylon 6 material is easier to machine than other types of nylon. It’s comparable to Nylatron and Nycast.

MDS-Filled Easy-to-Machine
Wear-Resistant Cast Nylon Tubes

The addition of MDS gives these tubes exceptional wear resistance along with a self-lubricating surface. They're made of cast nylon 6, making them easier to machine and better electrical insulators than other MDS-filled nylon tubes.

Oil-Filled Easy-to-Machine
Wear-Resistant Cast Nylon Tubes

This nylon stays lubricated over time because it’s filled with oil. Use it to fabricate parts for hard-to-reach places where adding lubricants would be difficult.

Heat-Stabilized Easy-to-Machine
Wear-Resistant Cast Nylon Tubes

A good choice for making sprockets and pulleys, these cast nylon 6 tubes withstand higher temperatures and are easier to machine than standard nylon 6/6 tubes.

Slippery UHMW Polyethylene Tubes

In addition to a low-friction surface that prevents sticking and binding, this tough material is impact and wear resistant to handle the scuffs, scrapes, and strikes that other plastics can’t.

Chemical-Resistant Slippery PTFE Tubes

Known for its naturally slippery surface, PTFE surpasses most plastics when it comes to chemical resistance and performance in extreme temperatures.

Sleeving

High-Temperature
Electrical-Insulating Tube Sleeving

This sleeving is often used to insulate connections in transformers and relays. It prevents electricity and heat from dissipating from wire and cable.

Spark-Resistant Tube Sleeving

A silicone rubber coating on this fiberglass sleeving protects against sparks and molten metal splash.

Hook-and-Loop Wrap-Around Sleeving

A strip of hook-and-loop creates a strong seal along the entire length of this sleeving, yet it can be opened at any point to access contents. Use it to wrap around wire, cable, or hose without disconnecting them.

Spark-Resistant Hook-and-Loop
Wrap-Around Sleeving

Silicone rubber coats this fiberglass sleeving to shed sparks and molten metal splash. It has a slit along the entire length so it easily wraps around wire, cable, and hose without disconnecting them.

Pipe Insulation

Mineral Wool Pipe Insulation

These insulation tubes and sheets meet ASTM E84 standards for flame and smoke.

Fiberglass Pipe Insulation

This common insulation material is typically used on hot and cold water lines and in process piping.

Ultra-Insulating Low-Temperature
Polyisocyanurate Foam Pipe Insulation

This very rigid insulation offers the lowest heat-flow rate of our pipe insulation and restricts absorption of water, air, and gas. It is typically used in process piping and chiller plants and performs best in applications below 50° F.

Pipe Insulation Banding

Save installation time with banding that’s ready to use. It has an easy-to-close fastener on one end.

Hose

Abrasion-Resistant Water Hose

High-Temperature Coolant Hose

Coolant Hose

Flexible Coolant Hose

Extreme-Temperature Coolant Hose

Duct Hose and Duct Hose Fittings

High-Temperature Rigid Metal Duct Hose for Fumes

Adjustable-Diameter Rigid Duct Hose for Fumes

Easy-Store Very Flexible Duct Hose for Fumes

High-Temperature Flexible Duct Hose for Fumes