Xem Studiomeasured geometryLibrary › Hardware › Found & household materials ·
Laboratory rubber stoppers #0–#13 and wine corks
What size rubber stopper fits a 25 mm test tube or a soda bottle? · Standard part · basis: Standard US laboratory stopper sizes (top and bottom diameters, 25 mm tall, taper ~1:8); wine corks #9 (Ø24 × 44/49)
Long Earth Society build part. Displacer-rod glands and test-tube closures. The engines · all LES parts
- sizes
- 16 in table
Notes
- Stopper number → top/bottom diameter (mm): #0 17/13, #1 19/15, #2 20/16, #3 24/18, #4 26/20, #5 27/23, #6 32/26, #6½ 34/27, #7 37/30, #8 41/33, #9 45/37, #10 50/42, #11 56/48, #12 64/54, #13 68/58. All 25 mm tall; one- and two-hole versions take 5–7 mm glass tube.
- Pick the stopper whose mid-diameter is 1 mm over the opening: 16 mm test tube → #0; 20 mm → #2; 25 mm → #4/#5; 28 mm soda-bottle neck → #6; 70 mm jar mouth → #13 is too small, use a printed disc.
- Corks: #9 natural wine cork Ø24 × 44 mm (49 long for aged wines), compressible to Ø21; silicone stoppers survive 230 °C, natural rubber 80 °C. A cork drilled 3 mm is the cheapest displacer-rod gland for a test-tube engine.
Sizes
| number | top_mm | bottom_mm | height_mm | fits_opening_mm |
|---|---|---|---|---|
| #0 | 17 | 13 | 25 | 14–16 |
| #1 | 19 | 15 | 25 | 16–18 |
| #2 | 20 | 16 | 25 | 17–19 |
| #3 | 24 | 18 | 25 | 19–23 |
| #4 | 26 | 20 | 25 | 21–25 |
| #5 | 27 | 23 | 25 | 24–26 |
| #6 | 32 | 26 | 25 | 27–31 |
| #6.5 | 34 | 27 | 25 | 28–33 |
| #7 | 37 | 30 | 25 | 31–36 |
| #8 | 41 | 33 | 25 | 34–40 |
| #9 | 45 | 37 | 25 | 38–44 |
| #10 | 50 | 42 | 25 | 43–49 |
| #11 | 56 | 48 | 25 | 49–55 |
| #12 | 64 | 54 | 25 | 55–63 |
| #13 | 68 | 58 | 25 | 59–67 |
| #9 cork | 24 | 24 | 44 / 49 | 22–23 |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| Wikipedia | Bung | web | CC BY-SA 4.0 (text) |
| Wikipedia | Cork (material) | web | CC BY-SA 4.0 (text) |
| Long Earth Society | Engine builds (videos and write-ups) | web, video | LES site |
Free files
★ Free files 17 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| stopper-0 | #0 stopper: Ø17 top, Ø13 bottom, 25 mm tall | STEP · STL |
| stopper-1 | #1 stopper: Ø19 top, Ø15 bottom, 25 mm tall | STEP · STL |
| stopper-2 | #2 stopper: Ø20 top, Ø16 bottom, 25 mm tall | STEP · STL |
| stopper-3 | #3 stopper: Ø24 top, Ø18 bottom, 25 mm tall | STEP · STL |
| stopper-4 | #4 stopper: Ø26 top, Ø20 bottom, 25 mm tall | STEP · STL |
| stopper-5 | #5 stopper: Ø27 top, Ø23 bottom, 25 mm tall | STEP · STL |
| stopper-6 | #6 stopper: Ø32 top, Ø26 bottom, 25 mm tall | STEP · STL |
| stopper-6-5 | #6.5 stopper: Ø34 top, Ø27 bottom, 25 mm tall | STEP · STL |
| stopper-7 | #7 stopper: Ø37 top, Ø30 bottom, 25 mm tall | STEP · STL |
| stopper-8 | #8 stopper: Ø41 top, Ø33 bottom, 25 mm tall | STEP · STL |
| stopper-9 | #9 stopper: Ø45 top, Ø37 bottom, 25 mm tall | STEP · STL |
| stopper-10 | #10 stopper: Ø50 top, Ø42 bottom, 25 mm tall | STEP · STL |
| stopper-11 | #11 stopper: Ø56 top, Ø48 bottom, 25 mm tall | STEP · STL |
| stopper-12 | #12 stopper: Ø64 top, Ø54 bottom, 25 mm tall | STEP · STL |
| stopper-13 | #13 stopper: Ø68 top, Ø58 bottom, 25 mm tall | STEP · STL |
| cork-9-wine | #9 wine cork Ø24 × 44 (natural) | STEP · STL |
| cork-9-wine-49 | #9 wine cork Ø24 × 49 (long) | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=rubber-stoppers-and-corks
Fits with
Questions
What rubber stopper fits a 20 mm test tube?
#2 (20 mm top, 16 mm bottom); a #1 for 16–18 mm tubes, #4 for a 25 mm tube.
What size is a wine cork?
#9: 24 mm diameter, 44 mm long (49 mm for long corks); it compresses to 21–22 mm in the bottle neck.
Which stopper fits a soda bottle neck?
#6 (32/26 mm) for the 28 mm PCO 1881 neck; #7 for a 38 mm juice neck.