Choosing hoses tubing fittings starts with a simple question: how long does the run need to be, and what is it carrying? These two lines answer that differently. One is a PA12 nylon air line with a longer reach, aimed at truck-trailer and industrial air systems. The other is a shorter aluminum tube made for refrigeration. Both are new, but they are not interchangeable for every job.
Quick verdict
Go with the 100 ft PA12 nylon line if your priority is a long, pressure-capable air run. Choose the Robertshaw 11-193 if you're working on refrigeration and want an aluminum option.
At a glance
The table below outlines the main differences.
| Feature | 100 ft PA12 Nylon DOT Air Line | Robertshaw 11-193 Refrigeration Tubing |
| Listed price | USD 36.86 | USD 31.69 |
| Price bar | | |
| Length | 100 ft (30.5 m) | 50 ft |
| Outside diameter | 1/4 in | 1/4 in |
| Material | PA12 nylon | Aluminum |
| Maximum pressure | 500 psi | 90 psi |
| Listed use | Truck-trailer / industrial air systems | Refrigeration |
| Country of origin | China | US |
Where each product wins
The 100 ft PA12 nylon line wins on reach and air-system pressure duty. For a long air run, the 100 ft length avoids the need to join shorter sections. The Robertshaw 11-193 wins on refrigeration-specific direction: it is a refrigeration line, so it is the more targeted pick for that type of work.
Product notes
100 ft PA12 Nylon DOT Air Line
With 100 feet of line in one spool and a 500 psi rating, this PA12 nylon option is built for long-distance air distribution. Its listed scope is semi-truck trailers and industrial air systems, and its construction meets DOT FMVSS 571. If you need to run air from one point to another without splicing multiple shorter sections, the length alone gives it a practical edge. It comes in black, is made in China, and the included component is the 100 ft air hose. The main limitation is the higher listed price compared with the 50 ft Robertshaw. You pay about $5 more for roughly twice the length and a much higher pressure rating. That trade-off makes sense only if you actually need the extra reach and pressure capacity.
Robertshaw 11-193 Aluminum Refrigeration Tubing
Robertshaw's 11-193 is a 50-foot aluminum refrigeration line with a 1/4-inch outside diameter and a 90 psi working pressure. That focus makes it the more direct choice if you are replacing or extending a refrigeration line. The aluminum construction is clearly stated, and the 90 psi rating sets the boundary for what this tube can handle. It is made in the US. Because it is aluminum rather than nylon, it belongs to a different material family; use it when the job calls for a refrigeration line rather than a high-pressure air distribution line. What limits it for air-system use: 50 feet is half the length of the 100 ft PA12 line, and 90 psi is well below the 500 psi rating of that nylon line.
Final choice by use case
Use these as a quick final filter.
- Typical air-system run: Choose the 100 ft PA12 Nylon DOT Air Line; it fits truck-trailer and industrial air work.
- Refrigeration service: Choose the Robertshaw 11-193; it is a 50-foot aluminum refrigeration line.
