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1725A
Chesterton 1725A is a premium PTFE packing specifically tailored for pumps, mixers, and agitators operating in aggressive chemical environments. Its multi-strand interbraid structure maintains dimensional stability and structural integrity under high pressure, providing superior sealing reliability at temperatures up to 500 °F (260 °C) and across the full pH spectrum.
Enhanced with built-in lubricants to resist hardening and extrusion, 1725A delivers low friction, smooth operation, and an extended service life. The packing is simple to install directly off the spool, reducing installation time and minimizing operational disruptions. Its durable construction helps lower maintenance requirements, prevent premature wear, and improve overall equipment performance, making it an ideal choice for continuous-duty operations in demanding industrial environments. By ensuring consistent, long-lasting sealing, Chesterton 1725A helps facilities optimize production uptime, protect critical equipment, and reduce lifecycle costs.
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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 ↓
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Chemical and food-grade rotating equipment except for strong oxidizers and molten alkali metals
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Expanded PTFE yarn
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6.4 ( 0.25 )
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25.4 ( 1 )
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325 PSIg ( 22 BARg )
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9 m/s ( 1800 fpm )
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-20 °F ( -29 °C )
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450 °F ( 232 °C )
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14 pH