Overview
The Chesterton 255-15 is a standard double cartridge mechanical seal mount engineered for reliable dual sealing in general-purpose industrial applications. This cartridge-mounted seal is designed for 2-1/2″ shaft diameter with seal size -20, rated for speeds to 20 m/s and operating pressure to 40 bar (580 PSI), with temperature range -55°C to 300°C. The 255 series provides cost-effective dual sealing with flexibility to meet challenging application requirements in pumps, mixers, agitators, and rotating equipment.
Key Features
- Double Cartridge Design: Provides a cost-effective solution for applications requiring dual sealing with flexibility to meet challenging conditions
- Low Heat Generation: Low profile seal faces allow for low heat generation—making it ideal for non-lubricating fluids
- Robust Construction: Simple mechanical seal design results in a more robust and reliable seal for general applications
- Versatile Performance: Suitable for a broad range of industrial fluids and process conditions
Technical Specifications
- Shaft Size: 2-1/2 inch (63.5 mm)
- Seal Size: -20
- Maximum Operating Pressure: 40 bar / 580 PSI
- Maximum Operating Speed: 20 m/s
- Operating Temperature Range: -55°C to 300°C (-67°F to 572°F)
- Seal Configuration: Cartridge-mounted double seal
- Manufacturer: A.W. Chesterton Company
- Part Number: 255-15 (Full designation: 255-15-SA-SSC/CB/SSC/CB-S)
Typical Applications
Chesterton cartridge seals are ideal for use in pumps, mixers, agitators, and other rotating equipment. The 255-15 is commonly deployed in:
- Centrifugal and positive displacement pumps
- Mixers and agitators in chemical processing
- General industrial rotating equipment with dual sealing requirements
- Applications requiring emissions control and environmental compliance
- Systems using both lubricating and non-lubricating barrier fluids
Compatibility & Replacements
Compatible With
- Standard gland assemblies and bolt patterns compatible with Chesterton 255 cartridge seals
- Both SSC/CB material configurations and alternative material pairs within the 255 series
- Chesterton seal support systems (PSS, WSS, BSS) for dual seal barrier fluid management
- OEM equipment designed for Chesterton 255 cartridge dual seals
Replaces / Drop-In Replacement For
The Chesterton 255-15 cartridge mount is a direct replacement for equivalent Chesterton 255 -20 seal size units with identical shaft diameter and gland configurations. Verify exact material composition and gland dimensions with your system integrator before ordering to ensure proper fit and performance.
Works With
- Chesterton standard cartridge gland assemblies
- Adjustable Gland™ mounting systems
- Dual seal barrier fluid support systems (Plans 52, 53A, 53P)
- Industry-standard mechanical seal installation tooling and procedures
