Overview
The John Crane Type 5610 mechanical seal cartridge assembly is a universal, single-stage o-ring pusher design engineered for reliable shaft sealing in centrifugal and rotary pump applications. This 1-3/8″ seal (referenced as PT005326) combines robust construction with versatile compatibility across pump standards. John Crane seals are the industry standard for critical fluid-handling applications requiring maximum uptime and minimal leakage.
Key Features
- Single cartridge o-ring pusher design with non-clogging wave spring
- Reversible seal head—accommodates rotating seat/mating ring or rotating seal head operation
- Interchangeable with metal bellows seal head versions
- NSF-61 compliant for clean drinking water services
- Fits ANSI, ISO, and DIN seal chamber configurations
- Optimized primary ring design for enhanced durability and reliability
- Available in standard 5610, quench variants (5610Q with carbon ring throttle bushing, 5610L with lip seal)
Technical Specifications
- Seal Size: 1-3/8″ (1.375″)
- Design Type: Single cartridge o-ring pusher
- Secondary Seal: Elastomer O-ring
- Spring Type: Non-clogging wave spring (external)
- Temperature Range: −20°F to 400°F (−30°C to 205°C)
- Maximum Pressure: 200 psi(g) / 13 bar(g) for sizes 3.000″ and over; up to 300 psi(g) / 21 bar(g) for smaller sizes
- Industry Standards: API 682 Category 1 available (5610Q variant); NSF-61 certified
- Shaft Compatibility: Reversible for either rotating seat or rotating head configurations
Typical Applications
- Water utility and municipal pump systems (NSF-61 approved)
- HVAC chilled water and hot water circulation pumps
- Industrial process pump sealing in food, beverage, and pharmaceutical industries
- Chemical transfer and circulation pump systems
- End-suction and split-case centrifugal pump OEM and retrofit applications
Compatibility & Replacements
Compatible With
- ANSI B73.1 pump configurations
- ISO 5199 pump standards
- DIN 24960 seal chamber specifications
- Most major pump brands (Goulds, Aurora, Flowserve, SPM, etc.)
- Both vertical and horizontal shaft orientations
Replaces / Drop-In Replacement For
- Other 1-3/8″ single-cartridge mechanical seals in same chamber configuration
- Verify exact cross-compatibility with your pump OEM documentation before ordering
Works With
- Single seal arrangements with external flush systems
- Quench and throttle bushing piping schemes
- Standard 3/8″ NPT pipework connections (as per John Crane installation guidelines)
