This spring is used to hold a small piece of felt to oil a distributor block. It attaches inside. We used a suitable spring material in the same thickness as the sample that was provided to us. Order quantity for this was 300 pieces.
Please visit www.gasketstogo.com
A customer asked us to reproduce this fuel filter (center in image below) for an old motorcycle. We used a very fine stainless steel mesh identical to the original mesh in a brass enclosure just like the original. The little tab is used to install and remove the filter. Order quantity was 300 pieces.
The Gaskets-to-Go Custom Gaskets Blog 