Tandem pusher seal (API 682, Type A)
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Description
The APILITE (R) mechanical seal is a new addition to the RDT cartridge seal family. It is designed for sealing heavy and light hydrocarbons, including VOCs, and other hazardous fluids at oil refineries and petrochemical plants, gas plants, and chemical plants. APILITE RDT seal is an o-ring dual seal to be used with API Plan 52, 53, or 54.
RDT family seals are used for the same applications as the followings seals:
H7/H75 by Burgmann Germany
QBQ by Flowserve, USA
8B/59/58 by John Crane, USA
MS spring family by EKK Eagle, Japan
Advantages
- Minimized bending of seal rings allows for stable operation under higher pressures and for longer MTBR (mean time between repair) because of less wear;
- Same seal can be used in tandem and double applications;
- Interchangeability of many parts and design solutions with the SD APITERM seal reduces inventory of spare parts, lets the seal survive under pump dry-running, and decreases prices by encreasing parts production volume;
- Containment outboard seal version available for API 682 flush plans 71 and 72;
- Connections for API 682 flush plans 11/13, 21, 22, 31, 32, and 52/53/54 are provided as standard.
| Technical data | |
|---|---|
| Temperature | From -50 up to +260°C |
| Dynamic Pressure | Up to 50 bar |
| Static pressure | Up to 90 bar. |
| Linear speed | Up to 50 m/sec |
See also:
- APITERM SD - Dual cartridge welded metal bellows mechanical seal, for high temperature applications
- 50 - series - High pressure o-ring mechanical seal, tandem, double, or single
- RO - Single cartridge o-ring mechanical seal for oil & gas applications
Note: the above mentioned trade marks are property of their respective owners.