Our crest-to-crest wave springs are also offered with shim ends. These shim ends are essentially flat, round bases on each end of the spring.
Find out more specs by visiting the official website:
http://www.smalley.com/wave-springs/crest-crest-shim-ends
And while you're there, take a look at our linear springs:
http://www.smalley.com/wave-springs/linear-springs
