Chesterton 255 Standard Cartridge Dual Seal

Chesterton 255 Standard Cartridge Dual Seal
Flexible, Dual Seal Design for Plant-Wide Use

​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​This seal provides a cost-effective solution for a wide variety of applications that require dual sealing with the flexibility to meet some of the most challenging conditions.

Thanks to its integrated pumping ring and universal gland with both flush port as well as quench and drain, the 255 can handle the most demanding applications. Whether you need advanced environmental controls or system pressure fluctuation tolerance, the 255 has you covered.

Geometric double balance eliminates shifting O-Rings
High-flow pumping device
Features from brochure
Self-Centering Lock Ring™ ​​eliminates misalignment
Technical Data
Sizes25 mm to 120 mm (1.00" to 4.75")
Pressure711 mm (28") Hg Vacuum to 40 bar g  (600 psig*) 17 bar g  (250 psig) outboard*​
Temperature-55° C to 300° C (-67˚ F to 570˚ F)
Speed20 m/s  (4000 fpm)

Sealed pressure capabilities are dependent on the fluid sealed, temperature, speed and face combination. Consult Chesterton Mechanical Seal Engineering to confirm suitability for your application and to receive a product recommendation.



Catalog: Mechanical Seals (English) Mechanical Seals (English)pdf
Installation Intructions: 255 (English) Intructions: 255 (English)pdf
Brochure: Chesterton 155 Single and 255 Dual Cartridge Seals (English) Chesterton 155 Single and 255 Dual Cartridge Seals (English)pdf
Technical Material Reference (English) Material Reference (English)pdf
Environmental Control Plans (English) Control Plans (English)pdf