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Custom Molded Rubber
O-rings and Seals
Rubber Bellows, Rubber Boots and Convoluted Boots
Vibration Isolators and Mounts
Formed Rubber Hose
Materials and Elastomers
Due to the number of interacting forces, it is STRONGLY RECOMMENDED THAT YOUR ELASTOMER SELECTION BE RIGOROUSLY TESTED IN THE ACTUAL APPLICATION, performance assumptions must be checked so that you are certain that all variables have been carefully considered
In Reciprocating o-ring sealing applications there is a back and forth or reciprocating motion along the shaft axis between the inner and outer parts of the o-ring gland. O-rings are often referred to as piston and rod seals when used in these types of applications. The table below lists recommended dimensions for Dynamic Reciprocating o-ring glands by AS-568A o-ring dash numbers. For more information please contact one of our project managers at1.800.227.3539 ext.19
Dynamic Reciprocating O-Ring Gland Design
Dynamic Reciprocating
Custom Molded Rubber
Dynamic Radial Seal Design
 
Static Radial Seal Design
 
Dynamic Reciprocating Seal Design
 
Static Axial Internal Pressure
 
Static Axial External Pressure
 
Dynamic Rotary Seal Design
 
Static Crush Seal Design
 
Dovetail Seal Design
AS568 -004 through -475 Dynamic Reciprocating Seal Design Guidelines
AS-
568
DASH
#		 O-ring Gland (E) Actual %   Gland Width (L) Groove
Cross
Section		 Depth Squeeze Squeeze Clearance No
Back
Up		 One
Back
Up		 Two
Back
up		 Radius
-004 to
-050		 .070 +/-.003 .055 to .057 .010 to .018 15 to 25 .002 to .005 .093 to .098 .138 to .143 .205 to .210 .005 to .015
-102 to
-178		 .103 +/-.003 .088 to .090 .010 to .018 10 to 17 .002 to .005 .140 to .145 .171 to .176 .238 to .243 .005 to .015
-201 to
-284		 .139 +/-.004 .121 to .123 .012 to .022 9 to 16 .003 to .006 .187 to .192 .208 to .213 .275 to .280 .010 to .025
-309 to
-395		 .210 +/-.005 .185 to .188 .017 to .030 8 to 14 .003 to .006 .281 to .286 .311 to .316 .410 to .415 .020 to .035
-410 to
-475		 .275 +/-.006 .237 to .240 .029 to .044 11 to 16 .004 to .007 .375 to .380 .408 to .413 .538 to .543 .020 to .035