Collection: Spiral Rings - External - Medium-Heavy Duty - Carbon Steel

AME / WST / RST - Spring 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: AME, Smalley: WST, Spirolox and Ramsey: RST