CMP Union [1-1/2" MPT x 2" Slip, Self-Sealing] (21063-180-000) astral Unlike a generic cable

Unlike a generic cable

lighter spring configuration

and this Balboa SpaTouch1 Trapezoid Overlay is designed for compatible applications where the original face has become faded

or assembly condition

Helps regulate internal water flow through the heater

CMP Union [1-1/2" MPT x 2" Slip, Self-Sealing] (21063-180-000) astral Unlike a generic cableThe CMP Union [1 1 2" MPT x 2" Slip, Self Sealing] is a practical replacement union fitting for service work where matching the original configuration matters more than making a broad, generic substitution. It is used in plumbing service areas where matching the connection type and size is critical for leak control, easier equipment access, and a cleaner repair. Key identifying details from the listing include 1 1 2" MPT x 2" Slip, Self Sealing.