Tri-clamp end cap and gasket, 1.5 and 2 inch — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/tri-clamp-end-cap/  (CC BY 4.0)
Basis: flange and face per ISO 2852:1974; gasket per ISO 2852 Type B
Catalog version: 2026-10-20

Sizes: see table below
- 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.

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

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- ISO (via iTeh sample): ISO 2852:1974 clamp liners with gaskets (face and gasket profile, §6.1 and §8) — PDF — standard excerpt; dimensions are facts — https://cdn.standards.iteh.ai/samples/7850/eb49c396488d408c8ced3e2961d76cf3/ISO-2852-1974.pdf
- McMaster-Carr: Sanitary caps and gaskets (free STEP per part, for your own design use; no redistribution) — STEP, PDF — McMaster-Carr site terms: personal design use, no redistribution [verify license at link] — https://www.mcmaster.com/products/sanitary-fittings/

Free files (CC BY 4.0, Xem Studio; STEP + STL, 4 parts): https://xemstudio.com/files/hardware/tri-clamp-end-cap/index.json
API: https://xemstudio.com/api/geometry?object=tri-clamp-end-cap