Blood sealing properties of magnetic fluid seals

Jun Tomioka*, Norifumi Miyanaga

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


Shaft seals for rotary blood pumps have strong demands for low friction, very little leakage, and long-term use. Magnetic fluid seals have attracted attention as promising candidates for this purpose owing to their properties of having zero leakage, no wear, and relatively small viscous friction at the same time. In this study, the sealing performance including the maximum sealing pressure and the sealing durability under blood sealing is discussed. In addition, hemolysis tests for blood sealed by magnetic fluids are performed from the viewpoint of biological compatibility. The magnetic fluid seals are found to have adequate sealing durability and pressure resistance in the blood. In addition, hemolysis of blood sealed with the organic-solvent magnetic fluid seals is maintained below 0.5%.

Original languageEnglish
Pages (from-to)338-343
Number of pages6
JournalTribology International
Publication statusPublished - 2017 Sept


  • Blood seals
  • Hemolysis
  • Magnetic fluid seals
  • Rotary blood pumps
  • Shaft seals

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films


Dive into the research topics of 'Blood sealing properties of magnetic fluid seals'. Together they form a unique fingerprint.

Cite this