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Chesterton 891 Rotary Inside Single Seal

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Chesterton 891 Rotary Inside Single Seal
High-Performance, Single Component Seal

​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​Chesterton's 891 is a balanced, high-performance component single seal. The 891 can be run against many different stationary seal rings for maximum flexibility in many applications.  It is a non-fretting design that will not damage the shaft sleeve or any metal parts within the seal.​​

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Features
Specifications
Resources
Installation View
Monolithic seal faces​
Balanced
High-pressure capable
Non-clog, iso​lated springs
Dynamic O-Ring is positioned on a replaceable component surface
Minimized wearing components
Easy to repair with kits
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Sizes16 mm to 200 mm (.75" to 8.00")
Pressure711 mm (28") Hg Vacuum to 40 bar g (600 psig*)
Temperature–55° C to 300° C  (–67° F to 570° F)
Speed20 m/s (4000 fpm)
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Catalog: Rotating Equipment Solutions - Mechanical Seals, Pump Packing, Gaskets, and More (English)https://chestertondocs.chesterton.com/Rotating/RotatingCAT.pdfCatalog: Rotating Equipment Solutions - Mechanical Seals, Pump Packing, Gaskets, and More (English)pdf
Installation Instructions: 891/880 - Large Sizes (English)https://chestertondocs.chesterton.com/Rotating/si891_880_lg_EN.pdfInstallation Instructions: 891/880 - Large Sizes (English)pdf
Installation Instructions: 891/880 - Small Sizes (English)https://chestertondocs.chesterton.com/Rotating/si891_880_sm_EN.pdfInstallation Instructions: 891/880 - Small Sizes (English)pdf
Article: What is the impact of reliability on the sealing system energy footprint from pump shut down, repair and re-commissioning? (English)https://chestertondocs.chesterton.com/Rotating/What is the impact of reliability on the sealing system energy footprint from pump shut down, repair and re-commissioning.pdfArticle: What is the impact of reliability on the sealing system energy footprint from pump shut down, repair and re-commissioning? (English)pdf
Brochure: Chesterton 891 Component Seal (English)https://chestertondocs.chesterton.com/Rotating/sb891_EN.pdfBrochure: Chesterton 891 Component Seal (English)pdf

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