Specification:Ring possesss its unique characteristics including excellent concentricity,prcise size control,which xtremely improve the machiningefficiency for customers,

 As Supplied

Top and botton flat grinding, stress released,hip treated.

  T Tolerance

  +0.3~+0.5mm

 Outside Diameter of Ring Tolerance

 +0.3~+0.6mm

 The inner Diameter of

Ring Tolerance

 -0.6~+0.3mm