Mechanical seal john crane
Type 676
Low-temperature, AM350 Metal Bellows Shaft Seal for Mild Corrosive Services Type 676
The Type 676, with a rotating AM350 stainless steel bellows, is well suited for mild corrosive and abrasive applications. Available with hard faces for abrasive applications and a wide variety of secondary seals that cover a broad range of applications.
Product Description Type 676
Type 670: All-alloy C-276 high-strength low-temperature bellows assembly for highly corrosive applications.
Type 676: AM350 low-temperature bellows assembly for large sizes and mildly corrosive applications.
Type 680: All-alloy 20 low-temperature high-performance seal for use on a broad range of corrosive media.
Table Parameters Type 676
| Temperature Limits | -100°F to 400°F/-75°C to 200°C |
|---|---|
| Pressure Limits | Vacuum to 360 psi(g)/25 bar(g) |
| Speed Limits | 5000fpm/25m/s |
Features Type 676
- California Residents: PROPOSITION 65 WARNING
- Static secondary seal — available in single or dual arrangements, shaft mounted or in a cartridge; manufactured with a 45-degree tilt edge at the bellows’ inside diameter to disperse stresses and maximize operating life.
- Superior nesting ripple plate shape with a three-sweep radius; this plate design allows the bellows device to be flexed repeatedly without the metal being stressed beyond its endurance limit.
- Self-cleaning design — rotating bellows throw off suspended particles that clog spring-type seals. This self-cleaning action eliminates the need for external flushing, filters or cyclone separators and their associated costs.
- World-class bellows manufacture — our bellows production facility has an outstanding manufacturing process with state-of-the-art stamping, welding and testing technology.
- The Sealol® bellows incorporate all of the design features resulting from key engineering competencies, such as metallic thin shell methodology, tribology and fluid sealing technology, and thin film/fluid mechanics.
Recommended Applications Type 676
- Process pumps
- Other compressors
- Other rotating equipment