Cartex S-N Replacement Mechanical Seal

A Standardized Cartridge Equivalent Built for Fast Retrofits

Fitting the Cartex-SN equivalent seal is the main advantage of any cartridge design — the entire pre-set assembly, sleeve, gland, and spring compression included, slides onto the shaft as one unit, so there's no manual spring setting or working-length measurement needed on-site. The stationary seat locks into the cover, the flush connection is piped in, and the setting clips are removed once the assembly is secured, cutting installation time significantly compared to component-style seals. Being a balanced design rated for pressures well above typical component seals, and requiring no modification to the existing pump's seal chamber, it's become a common standardization choice for plants converting from packing or replacing older component seals across a mixed pump fleet. For complete step-by-step installation instructions and torque specifications, refer to our detailed installation guide on the blog.