Gray cast iron machines faster with less wear on cutting tools than most types of steel. It also absorbs vibration, so finished parts run quieter than those made of steel. It's often fabricated into gears, pulleys, rollers, and bushings.

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Certificates with a traceable lot number are available for these products. Download certificates from ACTIVITY after your order ships.

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 on the outside to a #8 reflective, mirror-like finish, these tubes have no visible grain lines. The polished surface is covered with a protective peel-off film. 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.

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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.

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From cookware to chemical-processing equipment, 304 stainless steel is a good all-around choice for a wide range of applications. It maintains its corrosion resistance in temperatures up to 1500° F.

304/304L stainless steel contains less carbon than standard 304 for better weldability.

Seamless round tubes are more corrosion resistant than welded tubes because they don’t have a seam that could potentially introduce impurities.

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Certificates with a traceable lot number are available for these products. Download certificates from ACTIVITY after your order ships.

All come with a traceable lot number and test report. From cookware to chemical-processing equipment, 304 stainless steel is a good all-around choice for a wide range of applications. It maintains its corrosion resistance in temperatures up to 1500° F.

The addition of molybdenum gives 316 stainless steel excellent corrosion resistance. Use it in a variety of marine and chemical-processing applications. It maintains its corrosion resistance up to the maximum temperature.

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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.

Fabricate containers, tanks, and lenses for light fixtures with these scratch- and UV-resistant cast acrylic tubes. Cast acrylic, which is comparable to Lucite and Plexiglas® Acrylic, is easier to machine than extruded acrylic. This material stands up to outdoor use better than polycarbonate and maintains clarity over time.

When compared to cast acrylic tubes, these extruded acrylic tubes offer nearly the same performance at a fraction of the cost. Use them for sight gauges and protective covers. This scratch- and UV-resistant material stands up to outdoor use better than polycarbonate and maintains clarity over time.

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Comparable to Lexan, Hyzod, Tuffak, and Makrolon, these polycarbonate tubes are half the weight of glass and maintain excellent impact resistance across a wide temperature range. Use them to make instrument gauge covers and display racks.

These cast nylon 6 tubes are easier to machine than other standard nylon 6/6 rods. They’re also better electrical insulators. Use them to make pulleys, bushings, and bearings. These tubes have an oversized OD and an undersized ID for finishing to the sizes listed. This material is comparable to Nylatron and Nycast.

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Impregnated with oil, these tubes remain slippery over time. Use them to fabricate pulleys, bushings, and bearings for use in hard-to-reach areas where adding a lubricant would be difficult. Because they are made of cast nylon 6, they are easier to machine than standard nylon rods, plus they’re better electrical insulators. The OD is oversized and the ID is undersized for finishing to the sizes listed. This material is comparable to Nycast and Nyloil.

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Known for their naturally slippery surface, these PTFE tubes are often made into bearings, rollers, and parts that slide and roll. They have exceptional resistance to chemicals and perform better than other plastic tubes in extreme temperatures. These easy-to-machine tubes are also excellent electrical insulators.

This sleeving withstands temperatures up to 390° F and is often used to insulate connections in transformers, relays, and solenoids. It prevents electricity and heat from dissipating from wire and cable. When exposed to flame, it will self-extinguish and produce a nonconductive ash. It’s flame rated VW-1 to meet requirements for preventing the spread of flames based on a timed test with vertically suspended material. Made of silicone-coated fiberglass, it resists chemicals.

A specially formulated silicone rubber coating on this fiberglass sleeving sheds sparks, molten metal splash, hydraulic fuel, and lubricating oil. Exposure to a torch will char the coating, but will not scorch the fiberglass inner layer. It also resists fraying. Because this sleeving is non-expandable, it does not stretch, so it’s best for applications where you know the exact diameter of the items you need to protect.

This common insulation material is typically used on hot and cold water lines and in process piping. To use outdoors, add metal jacketing.

Tubes, elbows, and tees are formed to provide the best fit on pipe and are the easiest to install. If your pipe is larger than the sizes we offer, choose a sheet/strip.

Tubes have an all-service jacket (ASJ) made of kraft paper with an adhesive strip closure. Seal with reinforced insulation tape (sold separately).

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. To use outdoors, add metal jacketing.

Tubes have a kraft paper all-service jacket (ASJ) that resists mold and mildew by allowing moisture to evaporate. They have an adhesive strip closure.