O-rings for car air conditioner gas R12 and R134a are packaged in a special case which is easy to handle and are available for a wide range of car models.
We also sell them individually for corporate use.

This gasket packing is used mainly for throttle vehicles equipped with ISCV, which may cause problems of ISCV valves and sensors.
ISCV requires disassembly and cleaning, but the gasket packing cannot be reused.
So it must be replaced. Heat-resistant material is used for the gasket packing.