{
 "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": "oring-gland-static-radial-as568",
 "name": "O-ring groove dimensions, static radial gland (piston and rod), AS568 cross-sections",
 "kind": "standard",
 "category": "Hardware",
 "group": "Bearings, rails & motion",
 "year": null,
 "question": "How deep and wide is the groove for an AS568 O-ring in a static piston or rod seal?",
 "tags": [
  "o-ring",
  "gland",
  "groove",
  "static seal",
  "as568",
  "seal",
  "standard"
 ],
 "aliases": [
  "o-ring groove dimensions",
  "o ring gland design",
  "as568 -2xx groove",
  "piston groove o-ring",
  "rod groove o-ring",
  "static o-ring groove depth",
  "o ring groove width",
  "o ring squeeze percent",
  "radial o-ring gland",
  "o ring groove stl",
  "o ring groove step",
  "o-ring groove for 3d print"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 10,
 "url": "https://xemstudio.com/objects/oring-gland-static-radial-as568/",
 "sheet_txt": "https://xemstudio.com/objects/oring-gland-static-radial-as568/sheet.txt",
 "sheet": {
  "basis": "Parker O-Ring Handbook ORD 5700, Design Chart 4-1 (Industrial Static Seal Glands), AS568 cross-sections .070 to .275 in",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "Depth L is the radial gland depth: the distance from the bore (piston seal) or the rod surface (rod seal) to the groove bottom. Piston gland: groove root Ø = bore Ø - 2L. Rod gland: groove root Ø = rod Ø + 2L. Widths G, G1, G2 are for no, one and two back-up rings.",
   "Squeeze, depth and clearance are tabulated as ranges because the O-ring, groove and bore each carry a tolerance. All figures are inches as printed; the sample files use the middle of each range, stated in the file notes.",
   "Static means no relative motion once assembled (a plug, a cap on a tube, a sleeve). The squeeze is higher than for a moving seal because nothing slides on the ring. For a moving rod or piston see the reciprocating gland page.",
   "Typical use: a 2-214 on a cap is -2xx, so cross-section .139 in: depth .111 to .113 in, groove .187 to .192 in wide with no back-up ring, bottom radius .010 to .025 in, up to .003 to .006 in diametral clearance.",
   "Files: for each of the five cross-sections a piston-style sample ring (grooves in the outside) and a rod-style sample block (grooves in the bore), each carrying the three widths (no / 1 / 2 back-up) side by side, in true section at a sample diameter of 2.000 in. Groove-bottom corners are rounded at the middle of the printed radius range; the groove mouth is broken at the printed 0.005 in radius. Walls are square (the drawing's 0 to 5 degree draft is not modelled).",
   "Back-up rings themselves are not modelled, and nothing here is a tolerance or fit statement for your own machining or print process: add your process allowance."
  ],
  "table": {
   "columns": [
    "AS568 series (dash sizes)",
    "cross-section W, in",
    "gland depth L, in",
    "squeeze, in",
    "squeeze, %",
    "diametral clearance, in",
    "groove width G, no back-up, in",
    "G1, 1 back-up, in",
    "G2, 2 back-ups, in",
    "groove radius R, in",
    "max eccentricity, in"
   ],
   "rows": [
    [
     "-0xx (004 to 050)",
     "0.070 ± 0.003",
     "0.050 to 0.052",
     "0.015 to 0.023",
     "22 to 32",
     "0.002 to 0.005",
     "0.093 to 0.098",
     "0.138 to 0.143",
     "0.205 to 0.210",
     "0.005 to 0.015",
     "0.002"
    ],
    [
     "-1xx (102 to 178)",
     "0.103 ± 0.003",
     "0.081 to 0.083",
     "0.017 to 0.025",
     "17 to 24",
     "0.002 to 0.005",
     "0.140 to 0.145",
     "0.171 to 0.176",
     "0.238 to 0.243",
     "0.005 to 0.015",
     "0.002"
    ],
    [
     "-2xx (201 to 284)",
     "0.139 ± 0.004",
     "0.111 to 0.113",
     "0.022 to 0.032",
     "16 to 23",
     "0.003 to 0.006",
     "0.187 to 0.192",
     "0.208 to 0.213",
     "0.275 to 0.280",
     "0.010 to 0.025",
     "0.003"
    ],
    [
     "-3xx (309 to 395)",
     "0.210 ± 0.005",
     "0.170 to 0.173",
     "0.032 to 0.045",
     "15 to 21",
     "0.003 to 0.006",
     "0.281 to 0.286",
     "0.311 to 0.316",
     "0.410 to 0.415",
     "0.020 to 0.035",
     "0.004"
    ],
    [
     "-4xx (425 to 475)",
     "0.275 ± 0.006",
     "0.226 to 0.229",
     "0.040 to 0.055",
     "15 to 20",
     "0.004 to 0.007",
     "0.375 to 0.380",
     "0.408 to 0.413",
     "0.538 to 0.543",
     "0.020 to 0.035",
     "0.005"
    ]
   ]
  }
 },
 "sheet_text": "O-ring groove dimensions, static radial gland (piston and rod), AS568 cross-sections — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/oring-gland-static-radial-as568/  (sheet CC BY 4.0)\nBasis: Parker O-Ring Handbook ORD 5700, Design Chart 4-1 (Industrial Static Seal Glands), AS568 cross-sections .070 to .275 in\nCatalog version: 2026-10-20\n\nSizes: see table below\n- Depth L is the radial gland depth: the distance from the bore (piston seal) or the rod surface (rod seal) to the groove bottom. Piston gland: groove root Ø = bore Ø - 2L. Rod gland: groove root Ø = rod Ø + 2L. Widths G, G1, G2 are for no, one and two back-up rings.\n- Squeeze, depth and clearance are tabulated as ranges because the O-ring, groove and bore each carry a tolerance. All figures are inches as printed; the sample files use the middle of each range, stated in the file notes.\n- Static means no relative motion once assembled (a plug, a cap on a tube, a sleeve). The squeeze is higher than for a moving seal because nothing slides on the ring. For a moving rod or piston see the reciprocating gland page.\n- Typical use: a 2-214 on a cap is -2xx, so cross-section .139 in: depth .111 to .113 in, groove .187 to .192 in wide with no back-up ring, bottom radius .010 to .025 in, up to .003 to .006 in diametral clearance.\n- Files: for each of the five cross-sections a piston-style sample ring (grooves in the outside) and a rod-style sample block (grooves in the bore), each carrying the three widths (no / 1 / 2 back-up) side by side, in true section at a sample diameter of 2.000 in. Groove-bottom corners are rounded at the middle of the printed radius range; the groove mouth is broken at the printed 0.005 in radius. Walls are square (the drawing's 0 to 5 degree draft is not modelled).\n- Back-up rings themselves are not modelled, and nothing here is a tolerance or fit statement for your own machining or print process: add your process allowance.\n\nAS568 series (dash sizes)  cross-section W, in  gland depth L, in  squeeze, in  squeeze, %  diametral clearance, in  groove width G, no back-up, in  G1, 1 back-up, in  G2, 2 back-ups, in  groove radius R, in  max eccentricity, in\n-0xx (004 to 050)  0.070 ± 0.003  0.050 to 0.052  0.015 to 0.023  22 to 32  0.002 to 0.005  0.093 to 0.098  0.138 to 0.143  0.205 to 0.210  0.005 to 0.015  0.002\n-1xx (102 to 178)  0.103 ± 0.003  0.081 to 0.083  0.017 to 0.025  17 to 24  0.002 to 0.005  0.140 to 0.145  0.171 to 0.176  0.238 to 0.243  0.005 to 0.015  0.002\n-2xx (201 to 284)  0.139 ± 0.004  0.111 to 0.113  0.022 to 0.032  16 to 23  0.003 to 0.006  0.187 to 0.192  0.208 to 0.213  0.275 to 0.280  0.010 to 0.025  0.003\n-3xx (309 to 395)  0.210 ± 0.005  0.170 to 0.173  0.032 to 0.045  15 to 21  0.003 to 0.006  0.281 to 0.286  0.311 to 0.316  0.410 to 0.415  0.020 to 0.035  0.004\n-4xx (425 to 475)  0.275 ± 0.006  0.226 to 0.229  0.040 to 0.055  15 to 20  0.004 to 0.007  0.375 to 0.380  0.408 to 0.413  0.538 to 0.543  0.020 to 0.035  0.005\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Parker Hannifin O-Ring Division (chart as copied by All Seals Inc.): Parker O-Ring Handbook ORD 5700, Design Chart 4-1: Industrial Static Seal Glands (radial, AS568 cross-sections) — web — Publisher's page; dimensions are facts — https://allsealsinc.com/pdfs/Static-oring-glands.pdf\n- Parker Hannifin O-Ring Division: Parker O-Ring Handbook ORD 5700 (full handbook, Sections IV and V: static and dynamic O-ring sealing) — web — Publisher's page; dimensions are facts — https://discover.parker.com/Parker-ORing-Handbook-ORD-5700\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 10 parts): https://xemstudio.com/files/hardware/oring-gland-static-radial-as568/index.json\nAPI: https://xemstudio.com/api/geometry?object=oring-gland-static-radial-as568\n",
 "sources": [
  {
   "publisher": "Parker Hannifin O-Ring Division (chart as copied by All Seals Inc.)",
   "title": "Parker O-Ring Handbook ORD 5700, Design Chart 4-1: Industrial Static Seal Glands (radial, AS568 cross-sections)",
   "url": "https://allsealsinc.com/pdfs/Static-oring-glands.pdf",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Parker Hannifin O-Ring Division",
   "title": "Parker O-Ring Handbook ORD 5700 (full handbook, Sections IV and V: static and dynamic O-ring sealing)",
   "url": "https://discover.parker.com/Parker-ORing-Handbook-ORD-5700",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  }
 ],
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 },
 "related": [
  "as568-o-rings",
  "oring-gland-dynamic-reciprocating-as568",
  "oring-grooves-metric",
  "o-rings-metric"
 ],
 "fits": [],
 "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": [],
 "faq": [
  {
   "q": "How deep should the groove be for a -2xx (0.139 in) O-ring in a static radial seal?",
   "a": "L = .111 to .113 in; groove width .187 to .192 in with no back-up ring (squeeze .022 to .032 in, 16 to 23%)."
  },
  {
   "q": "What is the groove radius for AS568 -0xx static glands?",
   "a": ".005 to .015 in at the groove bottom corners; .010 to .025 in for -2xx, .020 to .035 in for -3xx and -4xx."
  },
  {
   "q": "How wide is the groove with a back-up ring?",
   "a": "Add the ring thickness: for -2xx, G1 = .208 to .213 in with one back-up ring and G2 = .275 to .280 in with two."
  }
 ],
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   "note": "-0xx series, cross-section 0.070 in: gland depth 0.0510 in, groove-bottom radius 0.0100 in, mouth edge break 0.005 in, widths no / 1 / 2 back-up ring 0.0955 / 0.1405 / 0.2075 in. Piston-style sample ring (grooves in the outside): bore 2.000 in, piston Ø 1.9965 in (bore less the mid diametral clearance 0.0035 in), hole Ø 1.000 in, 0.200 in lands. Middle of each printed range; the layout is a sample, not a standard."
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   "note": "-1xx series, cross-section 0.103 in: gland depth 0.0820 in, groove-bottom radius 0.0100 in, mouth edge break 0.005 in, widths no / 1 / 2 back-up ring 0.1425 / 0.1735 / 0.2405 in. Piston-style sample ring (grooves in the outside): bore 2.000 in, piston Ø 1.9965 in (bore less the mid diametral clearance 0.0035 in), hole Ø 1.000 in, 0.200 in lands. Middle of each printed range; the layout is a sample, not a standard."
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   "note": "-4xx series, cross-section 0.275 in: gland depth 0.2275 in, groove-bottom radius 0.0275 in, mouth edge break 0.005 in, widths no / 1 / 2 back-up ring 0.3775 / 0.4105 / 0.5405 in. Rod-style sample block (grooves in the bore): rod Ø 2.000 in, housing bore Ø 2.0055 in (rod plus the mid diametral clearance), groove root Ø 2.4550 in, 0.200 in lands, 0.500 in wall outside the root. Middle of each printed range; the layout is a sample, not a standard."
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