# Tri-clamp end cap and gasket, 1.5 and 2 inch

> What are the dimensions of a 2 inch tri-clamp end cap and gasket?

- Category: Hardware › Tri-clamp
- Kind: Hardware
- Basis: flange and face per ISO 2852:1974; gasket per ISO 2852 Type B
- Page: https://xemstudio.com/objects/tri-clamp-end-cap/ · JSON: https://xemstudio.com/api/geometry?object=tri-clamp-end-cap · Plain text: https://xemstudio.com/objects/tri-clamp-end-cap/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); linked files under their publishers' licenses

## Notes

- End cap: ISO 2852 face (rim 2.85, recess 1.6 inside the groove diameter, 20° back) on a 6 mm solid disc. Drill feedthrough bosses at least 6 mm in from the rim so the clamp still seats.
- Gasket (ISO 2852 Type B, all sizes): bead thickness U 5.5 mm sitting in both recesses, web T1 1.7 mm between the sealing lands, compressed thickness V 2.1 mm, inner lip 1.1 mm thick × 2.8 mm long into the bore. Outside diameter ≈ groove diameter (56.5 mm for 2 in).
- Silicone to ~230 °C; EPDM, Viton and PTFE for other service. For an engine, a PTFE-envelope or silicone gasket on the hot end.

## Sizes

| size_in | flange_od_mm | groove_dia_mm | gasket_lip_id_mm | gasket_bead_mm | compressed_mm |
|---|---|---|---|---|---|
| 1.5 | 50.5 | 43.5 | 35.8 | 5.5 | 2.1 |
| 2 | 64.0 | 56.5 | 48.8 | 5.5 | 2.1 |

## Where the files are

- ISO (via iTeh sample): [ISO 2852:1974 clamp liners with gaskets (face and gasket profile, §6.1 and §8)](https://cdn.standards.iteh.ai/samples/7850/eb49c396488d408c8ced3e2961d76cf3/ISO-2852-1974.pdf) — PDF — standard excerpt; dimensions are facts
- McMaster-Carr: [Sanitary caps and gaskets (free STEP per part, for your own design use; no redistribution)](https://www.mcmaster.com/products/sanitary-fittings/) — STEP, PDF — McMaster-Carr site terms: personal design use, no redistribution (verify at link)

## Free STEP/STL (4 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/tri-clamp-end-cap/index.json

- tc-cap-1.5in-flat: [STEP](https://xemstudio.com/files/hardware/tri-clamp-end-cap/tc-cap-1.5in-flat.step) · [STL](https://xemstudio.com/files/hardware/tri-clamp-end-cap/tc-cap-1.5in-flat.stl) — 1.5 in flat end cap, 6 mm, ISO 2852 face
- tc-gasket-1.5in: [STEP](https://xemstudio.com/files/hardware/tri-clamp-end-cap/tc-gasket-1.5in.step) · [STL](https://xemstudio.com/files/hardware/tri-clamp-end-cap/tc-gasket-1.5in.stl) — 1.5 in gasket, ISO 2852 Type B profile (5.5 bead, 1.7 web, 2.8 lip)
- tc-cap-2in-flat: [STEP](https://xemstudio.com/files/hardware/tri-clamp-end-cap/tc-cap-2in-flat.step) · [STL](https://xemstudio.com/files/hardware/tri-clamp-end-cap/tc-cap-2in-flat.stl) — 2 in flat end cap, 6 mm, ISO 2852 face
- tc-gasket-2in: [STEP](https://xemstudio.com/files/hardware/tri-clamp-end-cap/tc-gasket-2in.step) · [STL](https://xemstudio.com/files/hardware/tri-clamp-end-cap/tc-gasket-2in.stl) — 2 in gasket, ISO 2852 Type B profile (5.5 bead, 1.7 web, 2.8 lip)

## Questions

**What are 1.5 inch and 2 inch tri clamp gasket dimensions?**

1.5 in: 50.5 mm OD, 35.8 mm lip ID. 2 in: 64.0 mm OD, 48.8 mm lip ID. Both: bead 5.5 mm thick, web 1.7 mm, compressed 2.1 mm (ISO 2852 Type B).

**Which gasket material for a hot tri clamp end?**

Silicone to about 230 °C, EPDM and Viton for chemicals, PTFE or PTFE-envelope for the hottest service.

**Where can I put a feedthrough in a tri clamp end cap?**

Drill or model bosses at least 6 mm in from the rim so the gasket land stays flat; the free STEP cap here is a 6 mm disc with the ISO 2852 face.

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