Tightness testing of rotary ferromagnetic fluid seal working in water environment

Abstract

Purpose

The purpose of this publication is to determine the influence of selected factors on the durability and the tightness of ferrofluid seals working in water environments. Ferromagnetic fluid (FF) seals are one of the most common applications of magnetic fluid. New applications can be developed by extending the capabilities of these seals in fluid environments, especially in water.

Design/methodology/approach

Tests were performed using ferrofluids with differing physical properties like density, dynamic viscosity and saturation magnetization. Working conditions, such as water pressure and peripheral speed, were taken into account.

Findings

A mathematical description which allows the selection of an appropriate ferrofluid and the determination of the operating parameters of an FF seal was developed.

Originality/value

This study concerns the influence of peripheral speed, water pressure and magnetic fluid properties on seal tightness.

Citation

Szczech, M. and Horak, W. (2015), "Tightness testing of rotary ferromagnetic fluid seal working in water environment", Industrial Lubrication and Tribology, Vol. 67 No. 5, pp. 455-459. https://doi.org/10.1108/ILT-02-2015-0014