--- title: "Nylon 12 (PA12) Tubing: Sizes, Pressure and Where It Fits" canonical: "https://yuannaitube.com/nylon-12-pa12-tubing-sizes-pressure/" language: "en-US" --- RESOURCES # Nylon 12 (PA12) Tubing: Sizes, Pressure and Where It Fits By [YUANNAI TUBE]() Published 2026-10-28Updated 2026-11-03 ![Coils of thin flexible black and natural white nylon tubing with clean cut ends beside a push-in fitting]() ## Nylon 12 (PA12) tubing: the short answer Nylon 12 (PA12) is a flexible nylon used for pneumatic, hydraulic-oil and fuel lines. Our **PA12 tubing** lists 14 models, from 4/2.5 mm to 16/12 mm in metric sizes and from 1/8 in to 1/2 in in inch sizes, with a tolerance of ±0.10 mm. **Working pressure** at 23 °C runs from 10 bar to 29 bar depending on the size and wall, and it is highest on the small sizes and on the thicker walls. PA12 is generally the more flexible of the two nylons: its minimum **bend radius** is smaller than PA6 at 10 of the 14 sizes in our tables, including all four inch sizes. PA6 carries the higher **working pressure** at nine of the ten metric sizes. ## PA12 tubing sizes and ratings The table is taken from the data sheet model table for our [PA12 nylon tubing]() . Pressures are in bar at 23 °C. OD/ID are in mm; inch sizes are nominal. | Model | OD/ID (mm) | Working pressure (bar) | Burst pressure (bar) | Min. bend radius (mm) | | --- | --- | --- | --- | --- | | YN-PA12 0425 | 4/2.5 | 29 | 64 | 20 | | YN-PA12 0640 | 6/4 | 27 | 83 | 30 | | YN-PA12 0850 | 8/5 | 29 | 86 | 30 | | YN-PA12 0855 | 8/5.5 | 19 | 57 | 45 | | YN-PA12 0860 | 8/6 | 17 | 49 | 50 | | YN-PA12 1065 | 10/6.5 | 24 | 83 | 80 | | YN-PA12 1080 | 10/8 | 14 | 31 | 85 | | YN-PA12 1280 | 12/8 | 16 | 48 | 93 | | YN-PA12 1410 | 14/10 | 12 | 48 | 75 | | YN-PA12 1612 | 16/12 | 14 | 39 | 95 | | 1/8 in | 3.175/1.58 | 20 | 80 | 25 | | 1/4 in | 6.35/4.35 | 14 | 56 | 30 | | 3/8 in | 9.525/6.35 | 14 | 56 | 80 | | 1/2 in | 12.7/9.6 | 10 | 40 | 125 | **Working pressure** is the design rating; burst pressure is a test value. Design to the **working pressure**, and read the [pressure and temperature guide]() for warmer lines. ## How wall thickness changes the rating At the same OD, a thicker wall carries more pressure. At 8 mm OD our PA12 tables list 29 bar for 8/5 (wall 1.5 mm), 19 bar for 8/5.5 (1.25 mm) and 17 bar for 8/6 (1.0 mm). All three fit the same 8 mm push-in fitting, so choose the wall for the pressure and the OD for the fitting. See [pneumatic tubing 6/4 and 8/6 mm]() . ## PA12 or PA6 - **PA12** bends at the smaller radius at 10 of the 14 sizes in our tables, for example 20 mm against 40 mm on a 4/2.5 tube. Choose it where routing and flexing matter. - **PA6** carries the higher **working pressure** at nine of the ten metric sizes, and the same pressure at the four inch sizes. Choose it where pressure matters more than flexibility. The [PA6 vs PA12 comparison]() sets out moisture, dimensional stability, pressure, **bend radius** and cost. For PA12 in cold-weather farm machinery, see the [PA6-to-PA12 case study]() . ## Where PA12 tubing fits Our PA12 product page lists the tubing for pneumatic, hydraulic-oil and fuel lines. In the published chemical resistance chart that we cite, nylon is rated good against oils and greases and poor against concentrated acids and halogens, so it suits oil and air service and not acid service. Confirm your exact medium, concentration and temperature against the data sheet; the [chemical resistant tubing guide]() shows the ratings. For lines above the pressures in the table, see [high-pressure plastic tubing]() . ## How to order PA12 tubing 1. **Size:** OD/ID in mm, for example 8/5, and the fitting it must match. 2. **Pressure and temperature** of the line. 3. **Medium:** air, oil or fuel, and any additives. 4. **Length and quantity:** roll size, and total meters. The minimum order is 500 m per specification. 5. **Color** and any marking. Download the [PA12 data sheet]() , [request a 1–3 m sample]() , or [send your requirements]() . ## Frequently asked questions What is nylon 12 tubing used for? Our **PA12 tubing** is listed for pneumatic, hydraulic-oil and fuel lines. Confirm the medium and the operating conditions of your line against the data sheet before you order. Is nylon 12 the same as PA12? Yes. PA12 is polyamide 12, also called nylon 12. PA6 is polyamide 6, or nylon 6, and is a different material. What is the working pressure of PA12 tubing? It depends on the size and wall. In our tables it runs from 10 bar (1/2 in) to 29 bar (4/2.5 and 8/5 mm) at 23 °C. Find your size in the table above. Is PA12 more flexible than PA6? Generally yes. PA12 has the smaller minimum **bend radius** at 10 of the 14 sizes in our tables; at four metric sizes (8/6, 10/6.5, 10/8 and 12/8) PA6 has the smaller radius. PA6 carries more pressure at nine of the ten metric sizes. ## Sources and scope - [PA12 Nylon Tubing — English data sheet (v5-20261020)]() - [PA6 Nylon Tubing — English data sheet (v4-20261020)]() Use these documents for the identified product models and stated test conditions. General material comparisons and selection checklists do not establish a different grade’s rating, fitting compatibility or project approval. Confirm the exact model, medium, temperature, pressure and required evidence before ordering. Content review: [zhangkexin]() · Marketing Review scope: market information and document references. ## Tell us what your application needs. Send your dimensions, operating conditions and quantity. Let’s identify the right tubing for your project. [Request a Quote →]() ## Related tubing products ![PA12 Nylon Tubing]() [PA12]() ### PA12 Nylon Tubing PA12 nylon tubing for pneumatic, hydraulic-oil and fuel lines. 14 models from 2.5 x 4 mm to 12 x 16 mm and 1/8″ to 1/2″, in 100 m or 200 m rolls. [View details →]() ![PA6 Nylon Tubing]() [PA6]() ### PA6 Nylon Tubing PA6 nylon tubing for fixed pneumatic, oil and fuel lines. 14 models from 2.5 x 4 mm to 12 x 16 mm and 1/8″ to 1/2″, in 100 m or 200 m rolls. [View details →]()