Leak-Free Industrial Tubing: Airtight, Clamp-Connect Ductwork
US Tubing is laser-welded, clamp-connect industrial tubing built for systems where a leak isn’t acceptable. Each joint seals with a fully encompassing V-gasket on a Vanstone-flanged end, so oil mist, coolant mist and positive-pressure air stay inside the duct. It goes together with clamps like our rolled lip duct. No welding, no flange bolts. But every joint seals. Choose Galvanized Steel or Stainless Steel (304 or 316), 20 Gauge standard with 22 to 16 Gauge on request. Every section is backed by our leak-free guarantee.
Airtight Ductwork With a Leak-Free Guarantee
Standard duct joints rely on a slip fit or a friction seal. Put them under positive pressure or run a fine oil or coolant mist through them and they weep. You get stained ceilings, slick floors and a collector that pulls less air than it was sized for.
US Tubing is airtight ductwork by design. The Ultimate Seal® puts three things at every connection: a 90-degree Vanstone sealing face, a fully encompassing V-gasket and an over-center clamp locked with a safety pin. Sealing pressure spreads around the whole joint instead of one point. That’s why it’s leak-free duct, and why we back it with our 100% leak-free guarantee.
Clamp-Together Tubing That Installs Like Duct and Seals Like Flange
Flanged duct seals well, but every joint means lining up bolt holes, setting a gasket and torquing bolts. Clamp-style duct goes up fast, but most of it isn’t built for zero leakage. US Tubing gives you both: clamp-connect joints with an airtight, leak-free seal.
Airtight clamp joints
Seat the gasket, close the clamp, insert the safety pin. Done.
Laser-welded sections
A clean, continuous seam with no spiral seam to weep.
Infinitely adjustable runs
The US Tubing adjustable sleeve lets you cut close, not exact.
Easy to change
Open one clamp to pull a section for cleaning, add a drop or move a machine. No cutting, no rewelding.
Not every line needs a leak-free seal. For general dust and chip collection, our clamp-together rolled lip duct is the faster, lower-cost choice.
Galvanized Steel or Stainless Steel Tubing
Galvanized Steel handles most mist and exhaust work. Stainless Steel is the right call for corrosive vapor, wash-down areas, pharmaceutical and clean-process lines, and anywhere the duct has to stay clean inside. Custom stainless steel tubing runs, transitions and machine adapters are built to order by our special and custom fabrication team.
Not sure which material fits? Read Choosing the Right Duct Material for Corrosive Environments or download the US Tubing spec sheet.
Oil Mist and Coolant Mist Ductwork
CNC machining, grinding and parts washing throw off oil mist and coolant aerosol all shift long. Your mist collector catches it, but only if the duct gets it there. Ordinary joints let mist condense and weep at every seam. The result is saturated ductwork leaking onto floors and equipment.
US Tubing is airtight ductwork for oil mist: mist collector ductwork that keeps the mist inside the line from the machine to the collector. Pair it with oil mist accumulators and oil mist curbs to drain condensed oil back to the machine instead of the floor. For coolant mist ducting at the machine, use the adjustable sleeve. See the adjustable sleeve mist collection install guide.
Want the full playbook? Download our e-book, How to Manage Oil Mist Like a Pro.
Positive-Pressure and Low-Pressure Conveying Lines
Air knives, blower discharge and positive-pressure exhaust push air out through every gap in a duct line. US Tubing’s sealed joints hold it in. See how plants put it to work in our positive-pressure ducting case study and air knife ducting case study.
US Tubing can also work for some low-pressure pneumatic conveying pipe and tubing runs. Whether it fits depends on the material you’re moving, the line pressure and the distance, so we review each conveying application before we quote it. Tell us the material, rate and distance, and a Duct Guy or Gal will confirm the fit and the right gauge.
A Modular Tubing System From Standard Parts
US Tubing is a modular tubing system. Pipe, tubed elbows, adjustable sleeves, machine adapters, bell mouths and mini hoods all share the same clamp-connect end, so every section and fitting seals the same airtight way. Build a line from stock parts, then expand or reroute it without a welder on site.
Featured Products in this Collection
Both systems clamp together and adjust in the field. The difference is the seal. If a leak is a problem, use US Tubing. If it isn’t, our clamp-together rolled lip duct is the faster, lower-cost choice.
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