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.
Don't go in pools when youâre sick (to protect others) or have open wounds (to protect yourself). Never ever ever pee in a pool. And donât think that lakes or oceans are any safer. Yes, they can be vast, giving you the impression that your tiny germs will just be washed away.