Type 8648VRS Hydrocarbon Pipeline | Pump Seals | John Crane

Type 8648VRS

Garniture en élastomère sans ressort

8648VRS is a standardized non-pusher elastomer mechanical seal using patented technology, designed specifically for difficult hydrocarbon oil pipeline applications. It is designed specifically with a focus on meeting the demanding requirements of pipeline pumping station duties. Available as a single, dual pressurized or dual unpressurized arrangement, without outboard seals also incorporating the same non-pusher technology, the seal can be configured to suit both the operator and pipeline needs.



  • California Residents: PROPOSITION 65 WARNING
  • Unique patented secondary seal technology prevents wear to the sealing diameter and prevents secondary seal hang up
  • Non-compressible flexible elastomer bellows avoids fretting under pump shuttling
  • Robust Ear drive — primary ring incorporates optimized ear drive design for increased drive torque capability
  • Balanced design – balanced construction, including anti-extrusion ring, permits use in the most demanding high-pressure pipeline duties
  • Rotating mating ring design — enhances cooling and permits use at higher shaft speeds
  • Premium seal face materials — permits sealing of difficult services at high operating pressures
  • High-shore elastomer for lack of deformation and robust construction
  • Axially compact and easy to install seal head assembly
  • Static reverse pressure capability on the inboard seal of the dual pressurized configuration
  • Laser face grooved mating ring for use on flashing hydrocarbons

Documents et téléchargements

Contact Us

Des centaines d’experts en ingénierie. Plus de 200 sites répartis sur la planète. Offrir l’innovation et les services pour vous aider à réussir.

Scroll to top