{
 "version": "2026-10-20",
 "license": "Dimension sheets are written by Xem Studio from the cited sources and are free to use (CC BY 4.0, attribute 'Xem Studio'). Linked files belong to their publishers under the license shown; Xem Studio does not host them. 'license_verified: false' means the license shown is from memory or the publisher's page as last read and should be confirmed at the link before commercial use.",
 "slug": "sanitary-clamp-gaskets",
 "name": "Sanitary clamp gaskets, ISO 2852 Type B: ½ to 4 in",
 "kind": "standard",
 "category": "Hardware",
 "group": "Sanitary clamp fittings",
 "year": null,
 "question": "What are tri-clamp gasket dimensions for each size?",
 "tags": [
  "gasket",
  "type b",
  "tri-clamp",
  "sanitary",
  "iso 2852"
 ],
 "aliases": [
  "tri clamp gasket dimensions",
  "sanitary gasket sizes",
  "type b gasket 1.5 inch",
  "tri clamp gasket stl"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 8,
 "url": "https://xemstudio.com/objects/sanitary-clamp-gaskets/",
 "sheet_txt": "https://xemstudio.com/objects/sanitary-clamp-gaskets/sheet.txt",
 "sheet": {
  "basis": "ISO 2852 Type B profile (bead 5.5, web 1.7, lip 1.1 × ±2.8) on each size; OD = flange − 1, lip ID = bore − 2.2",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "The Type B gasket for each size: a 5.5 mm bead that fills both face recesses, a 1.7 mm web on the lands, and a 1.1 mm inner lip standing 2.8 mm each side of the centre plane.",
   "OD = flange − 1 mm; bead out to the groove diameter − 0.4 mm; lip ID = bore − 2.2 mm. Each file is drawn for its tube size (the ½ and ¾ in gaskets differ only in lip ID).",
   "The 1.5 and 2 in gaskets on the tri-clamp gasket page have the same profile with the bead out to the groove diameter itself."
  ],
  "table": {
   "columns": [
    "size_in",
    "od_mm",
    "bead_od_mm",
    "lip_id_mm",
    "bead_mm",
    "web_mm"
   ],
   "rows": [
    [
     "½",
     24,
     17.6,
     7.2,
     5.5,
     1.7
    ],
    [
     "¾",
     24,
     17.6,
     13.55,
     5.5,
     1.7
    ],
    [
     "1",
     49.5,
     43.1,
     19.9,
     5.5,
     1.7
    ],
    [
     "1½",
     49.5,
     43.1,
     32.6,
     5.5,
     1.7
    ],
    [
     "2",
     63,
     56.1,
     45.3,
     5.5,
     1.7
    ],
    [
     "2½",
     76.5,
     70.1,
     58,
     5.5,
     1.7
    ],
    [
     "3",
     90,
     83.1,
     70.7,
     5.5,
     1.7
    ],
    [
     "4",
     118,
     111.1,
     95.18,
     5.5,
     1.7
    ]
   ]
  }
 },
 "sheet_text": "Sanitary clamp gaskets, ISO 2852 Type B: ½ to 4 in — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/sanitary-clamp-gaskets/  (CC BY 4.0)\nBasis: ISO 2852 Type B profile (bead 5.5, web 1.7, lip 1.1 × ±2.8) on each size; OD = flange − 1, lip ID = bore − 2.2\nCatalog version: 2026-10-20\n\nSizes: see table below\n- The Type B gasket for each size: a 5.5 mm bead that fills both face recesses, a 1.7 mm web on the lands, and a 1.1 mm inner lip standing 2.8 mm each side of the centre plane.\n- OD = flange − 1 mm; bead out to the groove diameter − 0.4 mm; lip ID = bore − 2.2 mm. Each file is drawn for its tube size (the ½ and ¾ in gaskets differ only in lip ID).\n- The 1.5 and 2 in gaskets on the tri-clamp gasket page have the same profile with the bead out to the groove diameter itself.\n\nsize_in  od_mm  bead_od_mm  lip_id_mm  bead_mm  web_mm\n½  24.0  17.6  7.2  5.5  1.7\n¾  24.0  17.6  13.55  5.5  1.7\n1  49.5  43.1  19.9  5.5  1.7\n1½  49.5  43.1  32.6  5.5  1.7\n2  63.0  56.1  45.3  5.5  1.7\n2½  76.5  70.1  58.0  5.5  1.7\n3  90.0  83.1  70.7  5.5  1.7\n4  118.0  111.1  95.18  5.5  1.7\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- ASME: BPE Bioprocessing Equipment (clamp fitting dimensions, tube OD and wall) — standard — ASME; dimensions are facts [verify license at link] — https://www.asme.org/codes-standards/find-codes-standards/bpe-bioprocessing-equipment\n- 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\n- Dixon Sanitary: Clamp elbows, ferrules: dimension sheet — PDF — publisher's catalogue; dimensions cited, nothing copied — https://dixonvalve.com/en/media/1397776\n- Steel & O'Brien: Sanitary products catalog 2024 (clamp fittings dimension tables) — PDF — publisher's catalogue; dimensions cited, nothing copied — https://www.steelobrien.com/wp-content/uploads/2024/03/Sanitary-2024-FINAL.pdf\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 8 parts): https://xemstudio.com/files/hardware/sanitary-clamp-gaskets/index.json\nAPI: https://xemstudio.com/api/geometry?object=sanitary-clamp-gaskets\n",
 "sources": [
  {
   "publisher": "ASME",
   "title": "BPE Bioprocessing Equipment (clamp fitting dimensions, tube OD and wall)",
   "url": "https://www.asme.org/codes-standards/find-codes-standards/bpe-bioprocessing-equipment",
   "formats": [
    "standard"
   ],
   "license": "ASME; dimensions are facts",
   "license_verified": false,
   "hosted": false
  },
  {
   "publisher": "ISO (via iTeh sample)",
   "title": "ISO 2852 clamp liners: face profile and flange / groove diameters",
   "url": "https://cdn.standards.iteh.ai/samples/7850/eb49c396488d408c8ced3e2961d76cf3/ISO-2852-1974.pdf",
   "formats": [
    "PDF"
   ],
   "license": "standard excerpt; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Dixon Sanitary",
   "title": "Clamp elbows, ferrules: dimension sheet",
   "url": "https://dixonvalve.com/en/media/1397776",
   "formats": [
    "PDF"
   ],
   "license": "publisher's catalogue; dimensions cited, nothing copied",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Steel & O'Brien",
   "title": "Sanitary products catalog 2024 (clamp fittings dimension tables)",
   "url": "https://www.steelobrien.com/wp-content/uploads/2024/03/Sanitary-2024-FINAL.pdf",
   "formats": [
    "PDF"
   ],
   "license": "publisher's catalogue; dimensions cited, nothing copied",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "free-files",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "tri-clamp-gasket",
  "sanitary-clamp-ferrules",
  "sanitary-clamp-end-caps",
  "tri-clamp-hot-gasket",
  "tri-clamp-clamps"
 ],
 "fits": [
  {
   "role": "Goes in or on",
   "items": [
    {
     "slug": "sanitary-clamp-ferrules",
     "why": "bead in each face recess"
    }
   ]
  },
  {
   "role": "Connects to",
   "items": [
    {
     "slug": "tri-clamp-clamps",
     "why": "squeezed by the clamp"
    }
   ]
  },
  {
   "role": "Alternatives",
   "items": [
    {
     "slug": "tri-clamp-gasket",
     "why": "1.5 / 2 in gasket used with the engine heads"
    },
    {
     "slug": "tri-clamp-hot-gasket",
     "why": "flat ring for a hot joint"
    }
   ]
  }
 ],
 "dimensions": "exact (nominal, no printing tolerance)",
 "dimension_rule": "All geometry on Xem Studio is exact (nominal, true size) with no printing tolerance. Where a part meets another part, the object lists its mating features (feature, exact size, what it mates with, fit class: press, slide, run, socket, clamp or designed). Apply your process's allowance to those features only; 'designed' gaps are part of the design and stay as drawn.",
 "mating": [
  {
   "feature": "clamp faces",
   "exact": "ISO 2852 / BPE flange",
   "mates": "clamp + Type B gasket",
   "fit": "clamp",
   "files": "all"
  },
  {
   "feature": "gasket bead in the face recess",
   "exact": "groove Ø per size",
   "mates": "two ferrule faces",
   "fit": "designed",
   "files": "gasket-"
  }
 ],
 "fit_classes": {
  "press": "stays put: pin, tube, bearing or magnet held by interference. Typical FDM: hole +0.0 to +0.1 mm on diameter.",
  "slide": "assembles by hand and is held by a grub, pinch or clamp: shaft in a hub, rod in a socket, spigot in a bore. Typical FDM: +0.2 mm.",
  "run": "turns or slides in use: pin in a link, rod through a guide. Typical FDM: +0.3 mm.",
  "socket": "large sliding fit: syringe barrel, sleeve, bobbin in a bore. Typical FDM: +0.3 mm.",
  "clamp": "split part that closes on the mating part with screws: make it at size.",
  "designed": "a gap that is part of the design (piston fit option, displacer gap, air gap): do not change."
 },
 "faq": [
  {
   "q": "What size is a 2 inch tri-clamp gasket?",
   "a": "Ø63.0 OD, bead to Ø56.1, lip ID Ø45.3; 5.5 mm bead, 1.7 mm web."
  },
  {
   "q": "Are ½ and ¾ inch gaskets the same?",
   "a": "Same Ø24.0 OD on the 25.0 mini flange; the lip ID differs: Ø7.2 for ½ in, Ø13.55 for ¾ in."
  }
 ],
 "files_license": null,
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 "markdown": "https://xemstudio.com/objects/sanitary-clamp-gaskets/index.md"
}