𝔖 Bobbio Scriptorium
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Hydrogenated nitrile seals for braking system

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
147 KB
Volume
1996
Category
Article
ISSN
1350-4789

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✦ Synopsis

Dynamic sealing

between the rings of packing at the shaft. This void enables Anti-Keystone II Packing to consume up to 80% less power when compared to conventionally braided packings, according to the makers.

Originally, this modification to the trapezoidal cross section was intended to add mass to the outer half of the packing. This helps to prevent spinning of rings that are not seated fully during installation.

However, a significant side effect was discovered after the patent filing, in that the modified packing acted like a braided labyrinth seal. The voids remaining between the rings at the shaft sleeve provide a space for the fluid film to reside with added dwell time. Slowing the fluid's passage between shaft and packing has two advantages:

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