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.
Order that is not subject to cancellation until a specified expiration date. Firm orders without any expiration date are deemed to expire automatically 30 days after the date of offer. Also called confirmed order.