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Custom Engineered and Gask-O-Seals

Custom Engineered and Gask-O-Seals

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The Parker Gask-O-Seal, now more than 55 years old, enjoys a leading role as a world class sealing concept. Profoundly simple, yet enviably reliable, a uniquely designed elastomeric element is molded directly into groove(s) to produce an integrated sealing solution for a virtually endless array of challenging static face type applications.

Under pressure of assembly, the rubber compound is deformed from a round configuration to a square or oblong shape as shown in the figure. By predetermining and manufacturing the proper ratio between the volume of the molded in voids and the volume of the crown, controlled confinement is obtained. The Gask-O-Seal is designed so that the elastomer is deformed against the faying surfaces, affecting the seal by the inherent “memory” or resiliency of the elastomer as it tries to return to its original molded shape. There are many features and benefits that come with Gask-O-Seal design in static face seal applications.

Features	Product Image	Benefits
Molded in Place		Sealing element precisely and permanently molded in place, allowing for ease of assembly. Secondary machining in mating hardware is not required, reducing hardware costs.
Volume/Void Ratio		Provides the most optimum setting for the fully compressed seal element during assembly – no over fill and no under fill.
Visual Detection		Can be visually inspected to verify proper assembly.
Point Loading of Seal		Permits reduced flange thickness, smaller bolts and bolt circle. The force required to load the Gask-O-Seal metal to metal can be predetermined with closely controlled crown height.
Alternative Load Path		No retorquing required due to metal to metal contact. The load path established through the metal retainer assures positive closure and optimum bolt loading.
Limited Area of Attack		Limited area of seal exposure to fluid attack protects the elastomer and provides longer life. A mere 2% or less exposure of seal surface to the media.
Low Permeability		Yields extremely low permeability rate in vacuum and other gaseous applications with controlled percent squeeze and volume/ void ratio.

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