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.
The swimmers have coughs or red, stinging eyes after emerging from the pool. Usually those symptoms get dismissed as the effects of chlorine, but their causes are something more organic. When swimmers sweat or urinate in the pool water, the bodily fluids combine with the chlorine.