{
 "version": "2026-10-20",
 "license": "Dimension sheets: CC BY 4.0. Standard and published-size files: CC BY 4.0. Xem Studio's own designs (files_license = Xem Studio Design License): free to use and sell things from, not to redistribute as files — https://xemstudio.com/license/. Other publishers' files: their own license, linked beside them.",
 "slug": "sanitary-clamp-iso-2852-ferrules",
 "name": "ISO 2852 clamp ferrules (welded-type liners), 25 to 219.1 mm tube: bore, neck, flange, length, groove",
 "kind": "standard",
 "category": "Tri-clamp & pipe",
 "group": "Clamp fittings",
 "year": null,
 "question": "What are the ISO 2852 clamp ferrule dimensions (bore, neck OD, flange, length, groove) for 25 to 219.1 mm tube?",
 "tags": [
  "iso 2852",
  "clamp ferrule",
  "clamp liner",
  "tri-clamp",
  "sanitary",
  "metric",
  "iso tube",
  "hygienic"
 ],
 "aliases": [
  "iso 2852 ferrule dimensions",
  "iso clamp ferrule 38 mm",
  "iso 2852 51 mm ferrule",
  "clamp liner c6 c7 c8",
  "iso 2852 vs din 32676",
  "76.1 tri clamp ferrule",
  "en 10357 d clamp ferrule",
  "iso tube tri clamp 101.6"
 ],
 "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-iso-2852-ferrules/",
 "sheet_txt": "https://xemstudio.com/objects/sanitary-clamp-iso-2852-ferrules/sheet.txt",
 "sheet": {
  "basis": "ISO 2852:1993 Table 2 (welded-type liner) and Figure 1 (face profile), read from ISO's public sample pages; 38 mm row cross-checked against Alfa Laval's ISO 2852 ferrule listing",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "Dimensions are exact nominal (no tolerance). Nominal size = tube OD in mm (ISO 2037 / ISO 1127 tube). C6 bore, C8 neck OD at the weld end, C7 flange OD, F2 overall length, C2 gasket-groove diameter.",
   "Face per ISO 2852 Figure 1: flat from the bore to C7, one gasket groove on C2 1.6 deep with R1.2 bottom and 23° walls, flange 2.85 thick, 20° clamp back cone. Small edge radii (P1, P2 0.8, R2 2) are not drawn.",
   "Same clamp flanges as the inch and DIN 32676 series: 50.5, 64, 77.5, 91, 106 and 119 mm flanges take the matching tri-clamp clamp and Type B gasket. 40 mm tube already moves to the 64 mm flange (DIN 32676 DN40 stays on 50.5).",
   "Files for 25, 38, 40, 51, 63.5, 76.1, 88.9 and 101.6 mm. 114.3 to 219.1 are listed but not drawn: the face-profile column for the large sizes could not be read cleanly from the sample pages.",
   "ISO 2852 also has an expanded-type liner (tube rolled into it, 12 to 76.1 mm, Table 1): bore C5 = tube OD, neck C1 = tube OD + 4.0 to 5.8, length F3 16 to 30. That type is not on this page."
  ],
  "table": {
   "columns": [
    "tube OD mm",
    "C6 bore",
    "C8 neck OD",
    "C7 flange",
    "F2 length",
    "C2 groove",
    "file"
   ],
   "rows": [
    [
     "25",
     22.6,
     25.6,
     50.5,
     21.5,
     43.5,
     "yes"
    ],
    [
     "33.7",
     31.3,
     34.3,
     50.5,
     21.5,
     43.5,
     "no"
    ],
    [
     "38",
     35.6,
     38.6,
     50.5,
     21.5,
     43.5,
     "yes"
    ],
    [
     "40",
     37.6,
     40.6,
     64,
     21.5,
     56.5,
     "yes"
    ],
    [
     "51",
     48.6,
     51.6,
     64,
     21.5,
     56.5,
     "yes"
    ],
    [
     "63.5",
     60.3,
     64.1,
     77.5,
     21.5,
     70.5,
     "yes"
    ],
    [
     "70",
     66.8,
     70.6,
     91,
     21.5,
     83.5,
     "no"
    ],
    [
     "76.1",
     72.9,
     76.7,
     91,
     21.5,
     83.5,
     "yes"
    ],
    [
     "88.9",
     84.9,
     89.8,
     106,
     21.5,
     97,
     "yes"
    ],
    [
     "101.6",
     97.6,
     102.5,
     119,
     21.5,
     110,
     "yes"
    ],
    [
     "114.3",
     110.3,
     115.6,
     130,
     28,
     122,
     "no"
    ],
    [
     "139.7",
     135.7,
     141.2,
     155,
     28,
     146,
     "no"
    ],
    [
     "168.3",
     163.1,
     170,
     183,
     28,
     174,
     "no"
    ],
    [
     "219.1",
     213.9,
     221.2,
     233.5,
     28,
     225,
     "no"
    ]
   ]
  }
 },
 "sheet_text": "ISO 2852 clamp ferrules (welded-type liners), 25 to 219.1 mm tube: bore, neck, flange, length, groove — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/sanitary-clamp-iso-2852-ferrules/  (sheet CC BY 4.0)\nBasis: ISO 2852:1993 Table 2 (welded-type liner) and Figure 1 (face profile), read from ISO's public sample pages; 38 mm row cross-checked against Alfa Laval's ISO 2852 ferrule listing\nCatalog version: 2026-10-20\n\nSizes: see table below\n- Dimensions are exact nominal (no tolerance). Nominal size = tube OD in mm (ISO 2037 / ISO 1127 tube). C6 bore, C8 neck OD at the weld end, C7 flange OD, F2 overall length, C2 gasket-groove diameter.\n- Face per ISO 2852 Figure 1: flat from the bore to C7, one gasket groove on C2 1.6 deep with R1.2 bottom and 23° walls, flange 2.85 thick, 20° clamp back cone. Small edge radii (P1, P2 0.8, R2 2) are not drawn.\n- Same clamp flanges as the inch and DIN 32676 series: 50.5, 64, 77.5, 91, 106 and 119 mm flanges take the matching tri-clamp clamp and Type B gasket. 40 mm tube already moves to the 64 mm flange (DIN 32676 DN40 stays on 50.5).\n- Files for 25, 38, 40, 51, 63.5, 76.1, 88.9 and 101.6 mm. 114.3 to 219.1 are listed but not drawn: the face-profile column for the large sizes could not be read cleanly from the sample pages.\n- ISO 2852 also has an expanded-type liner (tube rolled into it, 12 to 76.1 mm, Table 1): bore C5 = tube OD, neck C1 = tube OD + 4.0 to 5.8, length F3 16 to 30. That type is not on this page.\n\ntube OD mm  C6 bore  C8 neck OD  C7 flange  F2 length  C2 groove  file\n25  22.6  25.6  50.5  21.5  43.5  yes\n33.7  31.3  34.3  50.5  21.5  43.5  no\n38  35.6  38.6  50.5  21.5  43.5  yes\n40  37.6  40.6  64.0  21.5  56.5  yes\n51  48.6  51.6  64.0  21.5  56.5  yes\n63.5  60.3  64.1  77.5  21.5  70.5  yes\n70  66.8  70.6  91.0  21.5  83.5  no\n76.1  72.9  76.7  91.0  21.5  83.5  yes\n88.9  84.9  89.8  106.0  21.5  97.0  yes\n101.6  97.6  102.5  119.0  21.5  110.0  yes\n114.3  110.3  115.6  130.0  28.0  122.0  no\n139.7  135.7  141.2  155.0  28.0  146.0  no\n168.3  163.1  170.0  183.0  28.0  174.0  no\n219.1  213.9  221.2  233.5  28.0  225.0  no\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- ISO (sample pages via iTeh): ISO 2852:1993 Stainless steel clamp pipe couplings for the food industry: Table 2 welded-type liner, Figure 1 face — web — Publisher's page; dimensions are facts — https://cdn.standards.iteh.ai/samples/7851/ed46f309bca445d2b99cf80609e01429/ISO-2852-1993.pdf\n- ISO (sample pages via iTeh): ISO 2852:1974 clamp liners: face profile and flange / groove diameters — web — Publisher's page; dimensions are facts — https://cdn.standards.iteh.ai/samples/7850/eb49c396488d408c8ced3e2961d76cf3/ISO-2852-1974.pdf\n- Alfa Laval: Clamp ferrule 38 mm, ISO 2852 (1279889): OD/ID 38.60/35.60, A 50.50, B 21.50 — web — Publisher's page; dimensions are facts — https://shop.alfalaval.com/en-bz/hygienic-fittings-iso-en-10357-d--3261317/clamp-ferrule-38mm--1279889-\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 8 parts): https://xemstudio.com/files/hardware/sanitary-clamp-iso-2852-ferrules/index.json\nAPI: https://xemstudio.com/api/geometry?object=sanitary-clamp-iso-2852-ferrules\n",
 "sources": [
  {
   "publisher": "ISO (sample pages via iTeh)",
   "title": "ISO 2852:1993 Stainless steel clamp pipe couplings for the food industry: Table 2 welded-type liner, Figure 1 face",
   "url": "https://cdn.standards.iteh.ai/samples/7851/ed46f309bca445d2b99cf80609e01429/ISO-2852-1993.pdf",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "ISO (sample pages via iTeh)",
   "title": "ISO 2852:1974 clamp liners: face profile and flange / groove diameters",
   "url": "https://cdn.standards.iteh.ai/samples/7850/eb49c396488d408c8ced3e2961d76cf3/ISO-2852-1974.pdf",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Alfa Laval",
   "title": "Clamp ferrule 38 mm, ISO 2852 (1279889): OD/ID 38.60/35.60, A 50.50, B 21.50",
   "url": "https://shop.alfalaval.com/en-bz/hygienic-fittings-iso-en-10357-d--3261317/clamp-ferrule-38mm--1279889-",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "free-files",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "sanitary-clamp-din-32676-ferrules",
  "sanitary-clamp-din-32676-gaskets",
  "tri-clamp-clamps",
  "tri-clamp-ferrule",
  "stainless-tube-din-11850-en-10357-iso-1127",
  "sanitary-clamp-din-32676-clamps"
 ],
 "fits": [],
 "dimensions": "exact (nominal, no tolerance added)",
 "dimension_rule": "All geometry on Xem Studio is exact (nominal, true size) with no tolerance added. 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. Typical accuracy by process and ISO 286 fits: https://xemstudio.com/tolerances/",
 "mating": [
  {
   "feature": "clamp face",
   "exact": "flange C7 (38 mm tube 50.5, 51 mm tube 64)",
   "mates": "tri-clamp clamp + Type B gasket of the same flange",
   "fit": "clamp",
   "files": "all"
  },
  {
   "feature": "weld end",
   "exact": "neck C8 × bore C6 (38: 38.6 × 35.6)",
   "mates": "ISO tube of the nominal OD, butt-welded",
   "fit": "designed",
   "files": "all"
  }
 ],
 "fit_classes": {
  "press": "stays put: pin, tube, bearing or magnet held by interference. ISO 286 equivalent: H7/p6 (locational interference) or tighter.",
  "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. ISO 286 equivalent: H7/g6 or H7/h6.",
  "run": "turns or slides in use: pin in a link, rod through a guide. ISO 286 equivalent: H8/f7 (close running).",
  "socket": "large sliding fit: syringe barrel, sleeve, bobbin in a bore. ISO 286 equivalent: H9/d9 (free running) or looser.",
  "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": "How big is an ISO 2852 ferrule for 38 mm tube?",
   "a": "Bore 35.6, neck OD 38.6, flange 50.5, 21.5 long, gasket groove on 43.5 mm (exact nominal)."
  },
  {
   "q": "Does an ISO 2852 ferrule fit a 1½ in tri-clamp?",
   "a": "Up to 38 mm tube the flange is 50.5 mm, the same as 1–1½ in, so the same clamp and gasket fit; 40 and 51 mm use the 64 mm (2 in) flange."
  },
  {
   "q": "How is ISO 2852 different from DIN 32676?",
   "a": "Same face and flange sizes, different tube: ISO 2852 sizes are tube OD (25, 33.7, 38, 51, 76.1 mm…), DIN 32676 series A sits on DIN 11850 tube (29, 35, 41, 53 mm…)."
  }
 ],
 "files_license": null,
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   "license": "CC BY 4.0 (Xem Studio)",
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   "stl": "https://xemstudio.com/files/hardware/sanitary-clamp-iso-2852-ferrules/sanitary-clamp-iso-2852-ferrules--101-6.stl",
   "note": "ISO 2852 welded-type clamp ferrule for 101.6 mm tube (flange 119, bore 97.6, length 21.5)"
  },
  {
   "file": "sanitary-clamp-iso-2852-ferrules--25",
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   "stl": "https://xemstudio.com/files/hardware/sanitary-clamp-iso-2852-ferrules/sanitary-clamp-iso-2852-ferrules--25.stl",
   "note": "ISO 2852 welded-type clamp ferrule for 25 mm tube (flange 50.5, bore 22.6, length 21.5)"
  },
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   "file": "sanitary-clamp-iso-2852-ferrules--38",
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   "stl": "https://xemstudio.com/files/hardware/sanitary-clamp-iso-2852-ferrules/sanitary-clamp-iso-2852-ferrules--38.stl",
   "note": "ISO 2852 welded-type clamp ferrule for 38 mm tube (flange 50.5, bore 35.6, length 21.5)"
  },
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   "note": "ISO 2852 welded-type clamp ferrule for 40 mm tube (flange 64, bore 37.6, length 21.5)"
  },
  {
   "file": "sanitary-clamp-iso-2852-ferrules--51",
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   "note": "ISO 2852 welded-type clamp ferrule for 51 mm tube (flange 64, bore 48.6, length 21.5)"
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  {
   "file": "sanitary-clamp-iso-2852-ferrules--63-5",
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   "stl": "https://xemstudio.com/files/hardware/sanitary-clamp-iso-2852-ferrules/sanitary-clamp-iso-2852-ferrules--63-5.stl",
   "note": "ISO 2852 welded-type clamp ferrule for 63.5 mm tube (flange 77.5, bore 60.3, length 21.5)"
  },
  {
   "file": "sanitary-clamp-iso-2852-ferrules--76-1",
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   "stl": "https://xemstudio.com/files/hardware/sanitary-clamp-iso-2852-ferrules/sanitary-clamp-iso-2852-ferrules--76-1.stl",
   "note": "ISO 2852 welded-type clamp ferrule for 76.1 mm tube (flange 91, bore 72.9, length 21.5)"
  },
  {
   "file": "sanitary-clamp-iso-2852-ferrules--88-9",
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   "stl": "https://xemstudio.com/files/hardware/sanitary-clamp-iso-2852-ferrules/sanitary-clamp-iso-2852-ferrules--88-9.stl",
   "note": "ISO 2852 welded-type clamp ferrule for 88.9 mm tube (flange 106, bore 84.9, length 21.5)"
  }
 ],
 "markdown": "https://xemstudio.com/objects/sanitary-clamp-iso-2852-ferrules/index.md"
}