There are often misconceptions surrounding the availability of contacting, polymeric rotary shaft seals. Much of this misunderstanding comes from assumptions made by comparing contacting, polymeric rotary shaft seals to hard-faced mechanical pump seals. Pump seals are readily available as “off the shelf” items for purchase due to the progression of historic ANSI & API manufacturing standards for sizing and operational settings encompassing a wide range of pressures, speeds and liquids. Typically, pump seals are available within a 1-4 week timeframe.
Comment: Achieving the new age of electricity
"<i>There is no solution to the storage problem</i>." Incorrect. The fact is, there's <b>no</b> viable <b>EES</b> solution for bad VRE...