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Tri-clamp flat gasket (hot joint, bore ID): 1.7 mm ring, ½ to 4 in
What flat gasket goes in a hot tri-clamp joint? · Hardware · basis: Flat ring: OD = C3 − 1 (flange less 0.5 per side), ID = tube bore, 1.7 mm thick (the ISO 2852 Type B web, the gap the clamp groove is drawn for)
Long Earth Society build part. The clamps and hot gaskets for every tri-clamp engine here. The engines
Exact dimensions. Every file is drawn at true size with no printing tolerance. The holes and pins that meet another part are listed below under Mating features, with the fit each joint needs; open those by your printer's or process's clearance before making the part. Mating features
- sizes
- 6 in table
Notes
- A flat 1.7 mm ring that takes the place of the Type B gasket at a joint that runs too hot for an elastomer gasket, such as the flame end of a Stirling engine, or wherever a piston or displacer has to pass through the joint (its ID is the bore, so there is no lip in the way).
- OD is the flange diameter less 1 mm (Ø24.0 / 49.5 / 63.0 / 76.5 / 90.0 / 118.0); ID is the bore of the larger tube on that flange (Ø15.75 / 34.8 / 47.5 / 60.2 / 72.9 / 97.38).
- Thickness 1.7 mm is the Type B gasket's web, so the clamp's groove meets the rims after the same 0.4 mm of travel as at a Type B joint and the last 0.6 mm per half squeezes the ring (designed); a thinner ring would leave the clamp unable to reach the rims.
Sizes
| size_in | od_mm | id_mm | thickness_mm |
|---|---|---|---|
| ½–¾ | 24.0 | 15.75 | 1.7 |
| 1–1½ | 49.5 | 34.8 | 1.7 |
| 2 | 63.0 | 47.5 | 1.7 |
| 2½ | 76.5 | 60.2 | 1.7 |
| 3 | 90.0 | 72.9 | 1.7 |
| 4 | 118.0 | 97.38 | 1.7 |
Mating features
Drawn at the exact size. Open press, slide, run and socket features by your process's clearance; leave designed gaps and clamp fits as drawn.
| feature | exact | mates with | fit | files |
|---|---|---|---|---|
| hot-gasket ring | C3 − 1 × bore × 1.7 (the Type B web) | ferrule faces; the clamp squeezes it in its last 0.6 mm | designed | hot-gasket-* |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| ISO | ISO 2852:1993 Stainless steel clamp pipe couplings for the food industry | standard | ISO verify |
| Long Earth Society | Tri-clamp Stirling engine builds | web, video | LES site |
Free files
★ Free files 6 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| hot-gasket-0.75in | 0.75 in flat gasket: Ø24 OD × Ø15.8 ID (= the bore) × 1.7 (the Type B web), sits flat on the lands in place of the Type B gasket at a flame-side joint or wherever a piston or displacer must pass the joint | STEP · STL |
| hot-gasket-1.5in | 1.5 in flat gasket: Ø49.5 OD × Ø34.8 ID (= the bore) × 1.7 (the Type B web), sits flat on the lands in place of the Type B gasket at a flame-side joint or wherever a piston or displacer must pass the joint | STEP · STL |
| hot-gasket-2in | 2 in flat gasket: Ø63 OD × Ø47.5 ID (= the bore) × 1.7 (the Type B web), sits flat on the lands in place of the Type B gasket at a flame-side joint or wherever a piston or displacer must pass the joint | STEP · STL |
| hot-gasket-2.5in | 2.5 in flat gasket: Ø76.5 OD × Ø60.2 ID (= the bore) × 1.7 (the Type B web), sits flat on the lands in place of the Type B gasket at a flame-side joint or wherever a piston or displacer must pass the joint | STEP · STL |
| hot-gasket-3in | 3 in flat gasket: Ø90 OD × Ø72.9 ID (= the bore) × 1.7 (the Type B web), sits flat on the lands in place of the Type B gasket at a flame-side joint or wherever a piston or displacer must pass the joint | STEP · STL |
| hot-gasket-4in | 4 in flat gasket: Ø118 OD × Ø97.4 ID (= the bore) × 1.7 (the Type B web), sits flat on the lands in place of the Type B gasket at a flame-side joint or wherever a piston or displacer must pass the joint | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=tri-clamp-hot-gasket
How it fits
Goes in or on
Tri-clamp sanitary ferrule, 1/2 to 4 inchon the lands between two facesConnects to
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Questions
What size is a 2 inch flat hot gasket?
Ø63.0 OD × Ø47.5 ID × 1.7 mm.
Why a flat gasket at a hot joint?
The Type B gasket is an elastomer with a bead in the face recesses and a lip into the bore; the flat ring has neither and sits on the lands, for a joint too hot for the elastomer or a joint a piston has to pass.
Why is the flat gasket 1.7 mm thick?
That is the Type B web thickness the two-bolt clamp's groove is drawn for: the groove reaches the rims after 0.4 mm and squeezes the ring in the last 0.6 mm of travel.