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.
Use 4-5 drops in each ear, alternately turning the head to the opposite side. A mild warming or tingling sensation may be experienced by some individuals and that is quite normal. If you experience swimmers ear symptoms such as pain, discomfort, itchiness, or even temporary hearing loss, contact your doctor. Swim-EARÂ® drops should not be used if any swimmerâs ear infection is present, if there is any ear discharge, or if you have a perforated ear drum.