# Tri-clamp gasket, ISO 2852 Type B: 1.5 and 2 in

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

- Category: Stirling engines › Tri-clamp engine parts
- Kind: Hardware
- Basis: ISO 2852 Type B profile: bead U 5.5, web T1 1.7, lip 1.1 thick projecting ±2.8 into the bore; measured from the files
- Page: https://xemstudio.com/objects/tri-clamp-gasket/ · JSON: https://xemstudio.com/api/geometry?object=tri-clamp-gasket · Plain text: https://xemstudio.com/objects/tri-clamp-gasket/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); linked files under their publishers' licenses

**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.

## Notes

- The Type B gasket between two ISO 2852 faces: a 5.5 mm bead that fills both face recesses, a 1.7 mm web on the lands, and an inner lip into the bore.
- 2 in: OD Ø63.0, bead out to Ø56.5 (the groove diameter), lip ID Ø45.3. 1.5 in: OD Ø49.5, bead to Ø43.5, lip ID Ø32.6. The lip is 1.1 mm thick radially and stands 2.8 mm each side of the centre plane (5.6 overall).
- The sanitary-clamp gasket page carries the same profile for every size ½ to 4 in, with the bead 0.2 mm inside the groove diameter on radius.

## Mating features (exact size; open press / slide / run / socket by your process clearance, leave designed and clamp as drawn)

| feature | exact | mates with | fit | files |
|---|---|---|---|---|
| gasket bead | groove Ø per size | the two face recesses | designed | tc-gasket-* |

## Sizes

| size_in | od_mm | bead_od_mm | lip_id_mm | bead_mm | web_mm | overall_mm |
|---|---|---|---|---|---|---|
| 1.5 | 49.5 | 43.5 | 32.6 | 5.5 | 1.7 | 5.6 |
| 2 | 63.0 | 56.5 | 45.3 | 5.5 | 1.7 | 5.6 |

## 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 (2 parts, CC BY 4.0, Xem Studio)

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

- 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: OD 49.5, lip ID 32.6, 5.5 bead to Ø43.5, 1.7 web, lip ±2.8
- 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: OD 63.0, lip ID 45.3, 5.5 bead to Ø56.5, 1.7 web, lip ±2.8

## How it fits

### Goes in or on
- [Tri-clamp (Tri-Clover) sanitary ferrule, 1/2 to 4 inch](https://xemstudio.com/objects/tri-clamp-ferrule/): bead in the face recess

### Connects to
- [Tri-clamp end cap, 6 mm flat: 1.5 and 2 in](https://xemstudio.com/objects/tri-clamp-end-cap/): seals the cap to a ferrule
- [Tri-clamp clamp, two-bolt: every flange size ½ to 4 in](https://xemstudio.com/objects/tri-clamp-clamps/): the clamp squeezes the web

### Alternatives
- [Tri-clamp flat gasket (hot joint, bore ID): 1.7 mm ring, ½ to 4 in](https://xemstudio.com/objects/tri-clamp-hot-gasket/): flat ring for a hot joint
- [Sanitary clamp gaskets, ISO 2852 Type B: ½ to 4 in](https://xemstudio.com/objects/sanitary-clamp-gaskets/): all sizes ½ to 4 in

## Questions

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

1.5 in: Ø49.5 OD, Ø32.6 lip ID. 2 in: Ø63.0 OD, Ø45.3 lip ID. Both: 5.5 mm bead, 1.7 mm web, 5.6 mm over the lip.

**Where does the gasket bead sit?**

In the 1.6 mm recess of each face, inside the groove diameter (Ø43.5 / Ø56.5).

## Fits with

- [Tri-clamp end cap, 6 mm flat: 1.5 and 2 in](https://xemstudio.com/objects/tri-clamp-end-cap/)
- [Sanitary clamp gaskets, ISO 2852 Type B: ½ to 4 in](https://xemstudio.com/objects/sanitary-clamp-gaskets/)
- [Tri-clamp flat gasket (hot joint, bore ID): 1.7 mm ring, ½ to 4 in](https://xemstudio.com/objects/tri-clamp-hot-gasket/)
- [Tri-clamp clamp, two-bolt: every flange size ½ to 4 in](https://xemstudio.com/objects/tri-clamp-clamps/)
- [Tri-clamp (Tri-Clover) sanitary ferrule, 1/2 to 4 inch](https://xemstudio.com/objects/tri-clamp-ferrule/)