Spiral Rings - Internal - Medium-Heavy Duty - Stainless Steel

Includes Series AMI / WHT / Spirolox RRT - Stainless Steel.
Originally designed to fit NAS50-51 grooves, this series is a popular OEM specification.
This two/three turn design is easier to install than the heavy duty RRN option.
Equivalent to Associated Spring: AMI, Smalley: WHT, Spirolox and Ramsey: RRT