A close-coiled helical extension spring, with ends fastened together to form a circle, designed to impose compression stresses toward the center of the circle thus formed when uniformly expanded.
NSN 6320-01-582-6668
NSN 5950-01-399-7146
NSN 5990-00-933-5314
NSN 5905-01-288-6018
NSN 6320-01-523-4954
NSN 6620-00-246-5159
NSN 5935-01-584-7691
NSN 5925-01-227-4048
NSN 5930-01-481-4233
NSN 6135-00-164-8780
NSN 6645-01-338-1423
NSN 5996-01-387-9151