In an oscillating o-ring application, the shaft moves in an arc within the gland and in contact with the I.D. of the seal. Because there is a tendency for the shaft to twist, self-lubricated o-rings with a hardness of 80 to 90 durometer are most often employed. Caution should be used, however, with graphite-containing compounds as they tend to pit stainless steel alloys.

Illustrations

Oscillating Seal Gland Dimensions

Oscillating seal gland dimensions are the same as those used for reciprocating applications.
For the complete table, see Dynamic Radial Seal Gland Dimensions.

AS568 Number O-Ring Dimensions A
Cylinder Bore Dia.		 B
Piston Dia.		 C
Piston Gland Dia.		 D
Rod Bore Dia.		 E
Rod Dia.		 F
Gland Dia.		 G
Gland Width
I.D. ±Tol. W (O.D.)
Tolerance   +.003   +.001
-.000		 +.000
-.001		 +.000
-.001		 +.001
-.000		 +.000
-.001		 +.001
-.000		 +.010
-.000
-006 .114 .005 .070 .254 .230 .229 .121 .123 .121 .230 .100
-007 .145 .005 .070 .285 .262 .261 .152 .154 .152 .262 .100
-008 .176 .005 .070 .316 .294 .293 .183 .185 .183 .294 .100
-009 .208 .005 .070 .348 .326 .325 .215 .217 .215 .326 .100
-010 .239 .005 .070 .379 .358 .357 .246 .248 .246 .358 .100