Correlation of Physical Properties with Performance of Polyacrylate Radial Lip Seals at -30F 730051
This paper evaluates the tendency of lip seals to fracture in a test apparatus in which dynamic runout is 0.010 in and the temperature is cycled between -30 and 0 F. Seals made of eight different polyacrylate polymers were soap-sulfur cured with various types and amounts of carbon black. Physical tests included room-temperature flexibility defined by Young's modulus at small strains, standard tensile tests at room temperature, flexibility at sub-zero temperatures determined by a Gehman test, and sub-zero starting torques of the seals. Primary determinant of successful fracture resistance is a low starting torque resulting from good low-temperature flexibility. The effect of adding graphite to some of these formulations is described and some current commercially available seals are evaluated.
Citation: Brown, J. and Drutowski, R., "Correlation of Physical Properties with Performance of Polyacrylate Radial Lip Seals at -30F," SAE Technical Paper 730051, 1973, https://doi.org/10.4271/730051. Download Citation
Author(s):
John M. Brown, Richard C. Drutowski
Affiliated:
Research Laboratories, General Motors Corp.
Pages: 10
Event:
1973 International Automotive Engineering Congress and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Seals and gaskets
Starters and starting
Drag
Tensile strength
Graphite
Polymers
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