DESCRIPTION
Our Square O-rings provide an economical option to traditional o-rings.  For existing applications, there is no need to change the design or procedures.  Square O-rings fit in O-ring grooves and are interchangeable with O-rings of the same size designation. 
Our Square O-rings fit standard AS568 groove dimensions and have the same ID as AS568 o-rings.  However, the cross-section dimension is slightly smaller for square o-rings. 
Square O-rings can be used for radial seals, and are manufactured to extreme close cross-section, ID and OD tolerances. 
Our standard Square O-rings are manufactured out of 70-durometer Nitrile, but can be ordered from many different materials and durometers. 
 
SEAL INFORMATION
Durometer (Shore A): 70  
Temperature Range (F): -40 TO 220  
Mating Surface Roughness - Ra (µin) - DYNAMIC: 4<>16  
Mating Surface Roughness - Ra (µin) - STATIC: 63 MAX  
Part Number Definition (Inch): 7-(AS568 3-DIGIT NUMBER)BN70  
Additional Part Number Definition (Inch): 4"ID X .210"CS   =   7-345BN70