Mechanical seal john crane
Type RRAL - RREL
Balanced Single-spring Cartridge Seals for Refinery and General Oil and Gas Service – Type RRAL – RREL
Patented single-spring drive to minimize clogging. RRAL/R is an API 682 qualified cartridge design.
Product Description Type RRAL – RREL
The RRAL/RRAR and RREL/RRER are balanced singlespring, engineered cartridge seals used for general duty and process industry applications.
These seals use standard components and are engineered for individual applications. In addition, the RREL/R is ideally suited for use on light hydrocarbons. The unique single-spring drive eliminates the requirement for keys and pins that can fret, has greater tolerance to misalignment and setting, and is more resistant to corrosion.
RRA and RRE seals use a unique drive spring arrangement with the selection of left or right hand spring dependent on the direction of pump rotation.
- RREL/R and RRAL/R meet API 610 requirements.
- RRAL/R is dimensionally interchangeable with the RROL/R and can be used to upgrade the seal.
Table Parameters Type RRAL RREL
| Temperature Limits | -40°F to 500°F/-40°C to 260°C
|
|---|---|
| Pressure Limits | Vacuum to 70 bar(g)
|
| Speed Limits | 4500 rpm
|
Features Type RRAL – RREL
- California Residents: PROPOSITION 65 WARNING
- Type RREL/R is ideally suited to light hydrocarbon services and is a low-emission seal design.
- Type RRAL/R is used for general hydrocarbon and water service and is qualification tested to API 682.
- Both designs are available in component or cartridge form and feature a flexible single-spring drive, which provides “soft” drive for start-up, increased misalignment capabilities and increased resistance to corrosion.
Recommended Applications Type RRAL – RREL
- Process pumps
- Other rotating equipment