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AS568B O-Ring Data
The following tables give o-ring gland dimensions for static and dynamic (reciprocating) applications.
Shown here are some generally useable groove design data, but if you really want the whole story of oring seal design, this Parker handbook is the real authority. Serious readers only.
Static O-Ring Axial (Face Seal) Glands | |||||||
AS568B | Cross | Gland | Squeeze | Groove Width | Groove | ||
Section | Depth | Inches | % | Liquids | Gases | Radius | |
-004 thru -050 | .070±.003 | .050 .054 | .013 .023 | 19 32 | .101 .107 | .084 .089 | .005 .015 |
-102 thru -178 | .103±.003 | .074 .080 | .020 .032 | 20 30 | .136 .142 | .120 .125 | .005 .015 |
-201 thru -284 | .139±.004 | .101 .107 | .028 .042 | 20 30 | .177 .187 | .158 .164 | .010 .025 |
-309 thru -395 | .210±.005 | .152 .162 | .043 .063 | 21 30 | .270 .290 | .239 .244 | .020 .035 |
-425 thru -475 | .275±.006 | .201 .211 | .058 .080 | 21 29 | .342 .362 | .309 .314 | .020 .035 |
Static O-Ring Radial Glands | |||||||||
AS568B | Cross | Gland | Squeeze | Diametral | Groove Width | Groove | |||
Section | Depth | Inches | % | Clearance | 0 BR | 1 BR | 2 BR | Radius | |
-004 thru -050 | .070±.003 | .050 .052 | .015 .023 | 22 32 | .002 .005 | .093 .098 | .138 .143 | .205 .210 | .005 .015 |
-102 thru -178 | .103±.003 | .081 .083 | .017 .025 | 17 24 | .002 .005 | .140 .145 | .171 .176 | .238 .243 | .005 .015 |
-201 thru -284 | .139±.004 | .111 .113 | .022 .032 | 16 23 | .003 .006 | .187 .192 | .208 .213 | .275 .280 | .010 .025 |
-309 thru -395 | .210±.005 | .170 .173 | .032 .045 | 15 21 | .003 .006 | .281 .286 | .311 .316 | .410 .415 | .020 .035 |
-425 thru -475 | .275±.006 | .226 .229 | .040 .055 | 15 20 | .004 .007 | .375 .380 | .408 .413 | .538 .543 | .020 .035 |
Dynamic O-Ring Reciprocating Glands | |||||||||
AS568B | Cross | Gland | Squeeze | Diametral | Groove Width | Groove | |||
Section | Depth | Inches | % | Clearance | 0 BR | 1 BR | 2 BR | Radius | |
-004 thru -050 | .070±.003 | .055 .057 | .010 .018 | 15 25 | .002 .005 | .093 .098 | .138 .143 | .205 .210 | .005 .015 |
-102 thru -178 | .103±.003 | .088 .090 | .010 .018 | 10 17 | .002 .005 | .140 .145 | .171 .176 | .238 .243 | .005 .015 |
-201 thru -284 | .139±.004 | .121 .123 | .012 .022 | 9 16 | .003 .006 | .187 .192 | .208 .213 | .275 .280 | .010 .025 |
-309 thru -395 | .210±.005 | .185 .188 | .017 .030 | 8 14 | .003 .006 | .281 .286 | .311 .316 | .410 .415 | .020 .035 |
-425 thru -475 | .275±.006 | .237 .240 | .029 .044 | 11 16 | .004 .007 | .375 .380 | .408 .413 | .538 .543 | .020 .035 |