This is a  rebuild kit for the VICTOR SR253 CO2 regulator. This is a rebuild kit for the internal parts only.  This kit includes the parts shown in the picture, (6c) diaphragm (RUBBER ONLY), (9)seat assembly, (8)nylon gasket, (12) friction ring.   The seat, orings and other parts are new, not rebuilt.   This kit includes the DIAPHRAGM (RUBBER ONLY) , PART 6C IN FIGURE B.

IMPORTANT:  THERE IS A DIFFERENCE BETWEEN THE SEAT FOR  CO2 AND ARGON REGULATORS.  THIS KIT IS DESIGNED FOR USE WITH CO2.

THIS KIT WILL WORK FOR PRESSURES DENOTED A-E

DISCLAIMER:  IF THESE PARTS ARE INSTALLED INCORRECTLY, SERIOUS INJURY OR DEATH MAY OCCUR.  THESE PARTS ARE BEING SOLD WITH THE BUYERS UNDERSTANDING THAT ONLY A QUALIFIED TECHNICIAN SHOULD PERFORM A REBUILD USING THESE PARTS.