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Silicone tube 1 × 3 to 10 × 14 mm (ID × OD)
What size silicone tube for a Stirling engine transfer port? · Hardware · basis: Common silicone tube sizes (ID × OD, 1–2 mm wall); each size as a 50 mm length, and 4 × 6 also at the lengths the syringe engines' transfer lines are cut to
Long Earth Society build part. Transfer ports between hot and cold spools on the LES demonstrators. The engines
Exact dimensions. True size, with no printing tolerance added.
- sizes
- 8 in table
Notes
- Silicone tube sizes, ID × OD: 1×3, 2×4, 3×5, 4×6, 5×8, 6×9, 8×12, 10×14 mm; walls 1.0 to 2.0 mm. Each size is a 50 mm length at exact ID and OD; 4 × 6 also comes cut to 20, 30 and 151 mm.
- The tube stretches over a barb larger than its ID.
- For a transfer port on a can or test-tube Stirling I use 4 mm ID tube kept as short as possible, since every mL inside the tube is dead volume.
- The barbs on the hose-barb page are drawn with the shank at the tube ID and ridges at ID + 1.2 for each size.
- Cut lengths on the engines here: can engine 20 + 20 + 20 (cap barb up, across, up into the Luer tip, through two transfer elbows); Ross yoke alpha 20 + 30 + 20 through two elbows; alpha V-twin 20 + 151 + 151 + 20 through three elbows.
Sizes
| id_mm | od_mm | wall_mm | barb |
|---|---|---|---|
| 1 | 3 | 1.0 | — |
| 2 | 4 | 1.0 | barb-2mm |
| 3 | 5 | 1.0 | barb-3mm |
| 4 | 6 | 1.0 | barb-4mm |
| 5 | 8 | 1.5 | — |
| 6 | 9 | 1.5 | barb-6mm |
| 8 | 12 | 2.0 | barb-8mm |
| 10 | 14 | 2.0 | — |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| Wikipedia | Hose barb | web | CC BY-SA 4.0 (text) |
| Wikipedia | Push-fit fitting | web | CC BY-SA 4.0 (text) |
| McMaster-Carr | Tubing (free STEP per part, for your own design use; no redistribution) | STEP, PDF | McMaster-Carr site terms verify |
| Long Earth Society | Engine and rig builds | web, video | LES site |
Free files
★ Free files 11 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| silicone-tube-1x3-50 | silicone tube 1 ID × 3 OD, 50 mm | STEP · STL |
| silicone-tube-2x4-50 | silicone tube 2 ID × 4 OD, 50 mm | STEP · STL |
| silicone-tube-3x5-50 | silicone tube 3 ID × 5 OD, 50 mm | STEP · STL |
| silicone-tube-4x6-50 | silicone tube 4 ID × 6 OD, 50 mm | STEP · STL |
| silicone-tube-5x8-50 | silicone tube 5 ID × 8 OD, 50 mm | STEP · STL |
| silicone-tube-6x9-50 | silicone tube 6 ID × 9 OD, 50 mm | STEP · STL |
| silicone-tube-8x12-50 | silicone tube 8 ID × 12 OD, 50 mm | STEP · STL |
| silicone-tube-10x14-50 | silicone tube 10 ID × 14 OD, 50 mm | STEP · STL |
| silicone-tube-4x6-20 | silicone tube 4 ID × 6 OD, cut to 20 mm | STEP · STL |
| silicone-tube-4x6-30 | silicone tube 4 ID × 6 OD, cut to 30 mm | STEP · STL |
| silicone-tube-4x6-151 | silicone tube 4 ID × 6 OD, cut to 151 mm | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=silicone-tube
How it fits
Goes in or on
Hose barbs for 2, 3, 4, 6 and 8 mm ID tubetube ID stretched over the barb ridges (ID + 1.2)
Can-engine cap for 53.3, 58, 66 and 76.2 mm cans4 mm ID tube on the cap's integral Ø4 barbAlternatives
PU pneumatic tube 4 to 12 mm ODstiff tube for push-fit fittingsAlso needed
Zip tie 4.8 × 1.3 mm cross-sectiona tie over the barb as a clampIn these build lists
Soda-can gammaA 12 oz can as the displacer cylinder over a tea light, a 10 mL syringe barrel a…Alpha V-twin, two 10 mL syringesTwo 10 mL syringe barrels in a 90° V on one crank pin: the V is the 90° phase.Ross yoke alpha, two parallel 10 mL syringesTwo 10 mL syringe barrels side by side on a Ross yoke: a = h gives 90° between t…Tri-clamp tee diaphragm gamma, 2 inA tea-light gamma in 2 in tri-clamp: displacer in a 3 in spool, a short-outlet t…Test-tube marble enginecrank and flywheel at the end.You might also need
Questions
What silicone tube for a Stirling transfer port?
4 mm ID × 6 mm OD, kept short (under about 30 mm), on a 4 mm barb.
What wall thickness is silicone tube?
1.0 mm up to 4 × 6, 1.5 mm for 5 × 8 and 6 × 9, 2.0 mm for 8 × 12 and 10 × 14.