The resistance to indentation. Measured by the relative resistance of the material to an indentor point of any one of a number of standard hardness testing instruments.
An arbitrary numerical value which indicates the resistance to penetration of the indentor point into the rubber surface. Value may be taken immediately or after a very short specified time.
The relative hardness of an elastomer obtained by use of a Shore durometer instrument.
Height, Contact Line:
The axial distance from the outside seal face to the lip contact line.
Height, Helix Seal Rib:
The height of the helical ribs, measured perpendicular to the outside lip surface.
The axial distance from the outside seal face to the toe face.
A rigid structure which supports and locates the seal assembly with respect to the shaft.
A sealing system having helically disposed elements formed on the shaft surface.