Using polymeric rotary shaft seals

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.