Steel is the most common material for spring washers due to its ease of process and its high tensile strength. Chrome vandium alloy is a higher quality steel with a good through-hardening capability; it is used to make very thick spring washers.
How to Prevent Swimmerâs Itch. Thereâs no cure-all to eliminate swimmerâs itch. The negative symptoms are, ironically, a problem of our own immune systemâs making, and short of abstaining from swimming altogether, thereâs a risk of getting swimmerâs itch in a Northern Michigan lake.
To help protect yourself and other swimmers: 1  Stay out of the water if you have diarrhea. 2  Shower before and after swimming. 3  Donât swallow the water. 4  Take children on frequent bathroom breaks. 5  Change diapers frequently and away from the water. Wash your hands and the childâs hands after changing diapers.