1725A

Chesterton 1725A is a premium PTFE packing tailored for pumps, mixers, and agitators in aggressive chemical environments. Its multi-strand interbraid structure maintains integrity under pressure, ensuring superior seal reliability up to 500 °F (260 °C) and across the full pH spectrum.

With built-in lubricants to resist hardening, 1725A offers low friction and long service life. It’s simple to install off-spool and reduces maintenance needs—ideal for minimizing downtime and maximizing equipment performance.

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Product Features

✔ Meets USDA requirements for minimal food contact
✔ Meets FDA requirements 21 CFR 178.3297, 21 CFR 177.2800, 21 CFR 177.1550
✔ Approved by NSF/ANSI and ACS standards for use in drinking water systems 
✔ Completely inert to most materials    
✔ Handles high shaft speeds

Technical Data ↓

  • Chemical and food-grade rotating equipment except for strong oxidizers and molten alkali metals

  • Expanded PTFE yarn

  • 6.4 ( 0.25 )

  • 25.4 ( 1 )

  • 325 PSIg ( 22 BARg )

  • 9 m/s ( 1800 fpm )

  • -20 °F ( -29 °C )

  • 450 °F ( 232 °C )

  • 14 pH

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