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.
How long should I wait to go swimming after adding any of my swimming pool chemicals. I've heard different stories from different people. I've heard you can swim immediately, but some people say to wait 15 - 30 minutes, and some say even longer, like 10 - 12 hours. I want to be safe, so here it goes: