Sealing Your Input Device:
The Key To Longevity
All materials are permeable to some degree. Sealing, there-fore, as defined by Advanced Input Systems is to prevent the
egress into an enclosure or layers of a
keypad by moisture,liquids, chemicals, or particles.Nothing you can do will prolong the life of your input devicemore than the proper sealing solution by the above definition.Primary considerations are the environment in which the
device will operate and the design of the product itself. Ourcommand of manufacturing, design, material, and technologyproduces input devices for the most difficult sealing applications.
An understanding of materials, environments, and productswill help you make the right selection for your device. Thispublication describes our most common sealing solutions.
Let Advanced Input Systemsrender you a sealing solution
fit for your exact use.
Gasketing
The sealing performance of a gasket material depends
strongly on how it is designed and the environment in whichit operates. Polymeric composites, like those used in gasketingand sealing applications, consist of polymers combined withfillers, fibers, rubber, and other materials manufactured ona calendar under high load. This produces a composite withinterconnected pores. Most commonly, gasket applications
include seals for water, air, gasses, and chemicals.Materials can be formulated in a wide range of firmness and avariety of densities. Different materials are carefully engineeredto create a seal in various fluids, operating temperatures,flange pressures, and mating surfaces. Material uniformity andconsistency of physical properties are crucial when designing totight tolerances.Gasket material is typically supplied in continuous rolls. It isthen easily die-cut, slit, milled, and laminated. The materialcan be furnished in ring and full-face flange gaskets as well
as custom shapes. Gaskets are compatible with a variety ofadhesives, allowing for flexibility in positioning.Environmental considerations vary tremendously betweenapplications. The most common concerns include compressionset resistance, outgassing, chemical and solvent resistance,
