Mechanical seal john crane
Type 1648
API 682-qualified, Single Cartridge, Type “A” O-ring Pusher Seal Type 1648
The Type 1648 is a high-performance single cartridge pusher seal designed to help prevent emissions leakage in most refinery applications. It is applied in non-hydrocarbon, non-flashing hydrocarbon and flashing hydrocarbon services. Process leakage is further contained by standard incorporation of a floating throttle bushing.
Product Description Type 1648
Type 1648 – Category 2, Type A, Arrangement 1 single cartridge seal. Available with either a fixed, floating or segmented bushing option and with either a single point or distributed flush arrangement.
Type 1648 – Category 3, Type A, Arrangement 1 single cartridge seal with segmented bushing and distributed flush standard. Provided with the appropriate documentation in accordance with API 682.
Type 2648 – Category 2, Type A, Arrangement 2 dual unpressurized cartridge seal. The outer seal provides additional containment in conjunction with an API Flush Plan 52. Type 2648 – Category 3, Type A, Arrangement 2 dual unpressurized cartridge seal provided with the appropriate documentation in accordance with API 682.
Type 3648 – Category 2, Type A, Arrangement 3 dual pressurized cartridge seal. The inner seal is double-balanced to provide a positive seal with pressure from either direction. The outer seal contains the barrier fluid using an API Flush Plan 53 or 54. Type 3648 – Category 3, Type A, Arrangement 3 dual pressurized cartridge seal provided with the appropriate documentation in accordance with API 682
Table Parameters Type 1648
| Temperature Limits | -40°F to 500°F/-40°C to 260°C |
|---|---|
| Pressure Limits | 1000 psi(g)/69 bar(g) |
| Speed Limits | 5000fpm/25m/s |
Features Type 1648
- California Residents: PROPOSITION 65 WARNING
- Qualification-tested per API 682
- Complies with API 682 technical design requirements
- Standard materials, per API 682
- Fits API 682 Table 1 and 2 seal chambers
- Computer-optimized, low-emission seal face designs
Recommended Applications Type 1648
- Process pumps
- Other rotating equipment