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Glossary E


Glossary E

Eccentricity, Lip ID to OD:
See Variation, Radial Wall.

Eccentricity, Shaft:
The radial distance which the geometric center of a shaft is displaced from the axis of shaft rotation.

Elasticity:
The property of a material which causes it to return to its original shape after deformation.

Elastomer:
An elastic rubberlike substance, such as natural or synthetic rubber.

Elongation:
The increase in length of a specimen due to a tensile force expressed as a percentage of the original specimen length.

End Play:
A measure of axial movement encountered or allowed, usually in reference to the shaft on which the seal lip contacts.

Extrusion:
Permanent displacement of part of a seal into a gap, under the action of fluid pressure.

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