Qualiseal Technology - Mechanical Face Seals


MECHANICAL FACE SEALS

Face Seal Home	Design Flexibility		Typical Configurations

TYPICAL CONFIGURATIONS
		Shaft Shoulder In some applications, space is limited. In those cases, a suitably finished shaft shoulder or end will perform as a mating ring. This is not normally recommended because it is difficult to maintain the proper surface finish.
		Clamped Ring This design, for all practical purposes, imposes no limitations on temperature, pressure or shaft speed. Note that a shaft sleeve solidly clamps the ring to a step or bearing. This provides a positive drive and eliminates elastomers. The shaft shoulder and the end of the sleeve must be square to the centerline.
		Clamped Ring with Elastomer Clamped into place, this type of seal uses a static elastomer for a positive seal of low viscosity fluids. Depending on the selection of elastomer, temperatures are ordinarily limited to 450^oF. Note: Equal clamping areas on either side of the ring are necessary to eliminate any twisting movements which may cause distortion of the ring. "O" rings are located in the shaft when used. Thereby preventing any opportunity of the clamping action to cause distortion of narrow flanges on either side of the "O" ring groove.
		"L" Shaped Ring, Packing Driven In low pressure applications, the "L" shaped ring provides a low-cost solution. It is sealed to the shaft and driven by the square packing.
		Solid Ring, Pin Driven A pin is used to provide positive drive, while an "O" ring provides the seal between the mating ring and shaft. This type of ring is suitable for high reverse pressures (P2>P1).
		Balanced Ring In this configuration, hydraulic pressure is utilized to maintain the axial location of the ring. P1 can exceed P2 by 500 psi (max.).