Teflon is a remarkable substance. It has the best resistance to chemical attack of any polymer, and it can be used at any temperature between -73 C and 260 C with no effect on its properties. It also has a very low coefficient of friction.
A stale dated warrant is an unredeemed warrant which was issued more than six months prior to the current date. A stale dated warrant is expired and the original instrument is no longer negotiable.
If your bank/credit union allows you to cash or deposit a stale-dated check, make sure that the the check may still not clear. Sometimes, issuing institutions wonât honor the check if the account no longer holds sufficient funds, or if the holder of the account requested a stop-payment on the check.