Pneumatic tubing isn't one-size-fits-all. You need to match outside diameter, material, working pressure, and length to the lines you're replacing. The four hoses here span a wide price range and include options for refrigeration, air brake, compressor, and light transfer work. If you're repairing a refrigerator, adding an air brake line, or running a compressor hose, this comparison shows which line makes sense for the job.
Quick Take
At four different prices and sizes, these tubes serve different jobs: a refrigeration coil, a long air line, an all-rounder, and a compact option. Your first decision is outside diameter and length; your second is material and pressure. If you only need a short, light line, the compact option is the low-cost way to start. If you need a long run for an air brake system, the long air line is the clear fit.
Price Comparison
| Product | Listed Price | Key Specs | Bar |
|---|---|---|---|
| Robertshaw 11-193 Pneumatic Tubing | $31.69 | 50 ft, 1/4 in OD, aluminum | |
| 100 FT 1/4 DOT PA12 Nylon Air Line | $36.86 | 100 ft, 1/4 in OD, PA12 nylon | |
| 5/16" OD Blue PU Air Compressor Line | $20.95 | 39.4 ft, 5/16 in OD, polyurethane | |
| 1/8" OD Black PU Air Tubing | $9.75 | 32.8 ft, 1/8 in OD, polyurethane |
Decision Matrix
Use this as a shortcut before reading the details.
| Use case | Recommended line |
|---|---|
| Refrigeration service | Robertshaw 11-193 tubing |
| Truck/trailer or industrial air systems | DOT Air Line |
| Compressor, gas, and general workshop use | Air Compressor Line |
| Light, low-cost small-bore lines | Air Tubing |
Product Notes
#### Robertshaw 11-193 Pneumatic Tubing For Refrigeration, Aluminum, 50 Ft L, 1/4 In
This is the only metal tubing in the group and the only one labeled for refrigeration. It gives you a 50-foot aluminum coil with a listed 90 psi working pressure. If your repair calls for a metal line in a refrigeration circuit, this is the natural starting point. The trade-off is that 50 feet is a full coil even for a short hookup, and the 90 psi rating is lower than the 363 psi and 500 psi figures on the other listed lines. That makes it a specialist choice rather than a general-purpose air line.
#### 100 FT 1/4 DOT Air Line PA12 Nylon Pneumatic Tubing
This line stands out for long, higher-pressure runs. It's PA12 nylon, 100 feet long, with a 500 psi maximum pressure. The description points it at semi truck, trailer, and industrial air systems, so it's the heavy-duty option. The limitation is cost and quantity: at $36.86 it's the most expensive of the four, and you're buying a full 100-foot reel even if your project only needs 20 or 30 feet.
#### Pneumatic Tubing Pipe 8Mm or 5/16 OD Blue Air Compressor PU Line Hose
The blue air compressor line is the middle child. It's 39.4 feet long, made of polyurethane, and the description lists uses from pneumatic tools and instruments to gas lines, laboratory automation, and general water/gardening work. That breadth makes it a useful everyday workshop line. Its limitation is length: at 39.4 feet it's not as generous as the 100-foot nylon reel, and at 5/16-inch OD it's the widest line here, so it's a middle-ground size rather than a compact one.
#### 1/8 OD Pneumatic Tubing Pipe, Black, 10 Meter/32.8ft
At the other end of the spectrum, the black air tubing is the budget option at $9.75 for 32.8 feet. Despite its small 1/8-inch OD, the listing gives it a 363 psi maximum pressure, which is well above the refrigeration line's 90 psi. It's described for air compressor fittings, water fluid transfer, and general transfer lines. The limitation is the same small size that makes it cheap: the 32.8-foot length is the shortest here, so longer projects will need more than one coil.
Final Recommendation
- Refrigeration work: Start with the Robertshaw 11-193 Pneumatic Tubing; it's the only metal line in this set.
- Air brakes and industrial air systems: Go with the DOT Air Line for the longest run.
- Everyday compressor and workshop lines: The Air Compressor Line covers the widest set of listed uses.
- Light, low-cost runs: The Air Tubing is the most compact option and a sensible place to start for small projects.
