This standard specifies the installation groove types, dimensions and tolerances of QY-shaped, C-shaped, CK-shaped, J-shaped, ZHM-shaped and QH-shaped sealing rings for cylinders. This standard applies to the installation groove type, size and tolerance of the sealing ring specified in the JB/T 6657 standard.
JB/T 6656-1993 history
1993JB/T 6656-1993 Installation groove for sealing rings intended to be used in air cylinders Type, main dimensions and tolerance