Tri-clamp half gasket for a clamped leaf or rim: 2 in, web 0.6 or 0.45 — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/tri-clamp-leaf-half-gasket/  (CC BY 4.0)
Basis: ISO 2852 Type B section split at the joint plane: bead into one face's 1.6 recess with the Type B's 0.3 squeeze, web so that two webs and the plate make the 1.7 joint
Catalog version: 2026-10-20

Sizes: see table below
- Two of them sandwich a flat plate (a flexure leaf, the liner's rim) in a 2 in joint: each bead fills its ferrule's recess, each web lies on its land, the plate between the webs. Web 0.6 for a 0.5 plate, 0.45 for a 0.8 plate: 0.6 + 0.5 + 0.6 = 0.45 + 0.8 + 0.45 = 1.7, the Type B web, so the clamp closes as usual.
- Ratings, as facts: the gasket must be rated above the relief setting (15 bar gauge) at its temperature; helium permeates silicone faster than PTFE; PTFE cold-flows under sustained load and heat. Cut or ordered to this drawing.

web_mm  plate_mm  bead_mm  od_mm  id_mm
0.6  0.5  1.9  63  47.5
0.45  0.8  1.9  63  47.5

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- ISO (via iTeh sample): ISO 2852 clamp liners: face profile and flange / groove diameters — PDF — standard excerpt; dimensions are facts — https://cdn.standards.iteh.ai/samples/7850/eb49c396488d408c8ced3e2961d76cf3/ISO-2852-1974.pdf
- ASME: BPE Bioprocessing Equipment (tube OD and wall, clamp fittings) — standard — ASME; dimensions are facts [verify license at link] — https://www.asme.org/codes-standards/find-codes-standards/bpe-bioprocessing-equipment
- Long Earth Society: Engine builds — web, video — LES site — https://longearthsociety.com/engineering/

Free files (CC BY 4.0, Xem Studio; STEP + STL, 2 parts): https://xemstudio.com/files/hardware/tri-clamp-leaf-half-gasket/index.json
API: https://xemstudio.com/api/geometry?object=tri-clamp-leaf-half-gasket