Apple Rubber Products offers custom designed, EMI-Shielded O-rings and seals for a variety of electronic applications, providing superior sealing and EMI suppression in one. These seals provide an alternative to metallic coating of parts and other methods utilized for EMI shielding, while delivering a reliable sealing solution.
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Welcome to the latest issue of Apple Rubber News, our e-newsletter designed to keep you informed on news, products and events from a leading designer and manufacturer of seals and sealing devices.
OUR RULES OF THUMB GIVE YOU A HAND WITH SEALING PRINCIPLES 
Apple Rubber's Rules of Thumb put information on sealing at your fingertips. The "rules" include basic information anyone working with seals should know and understand.
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SPECIAL ELASTOMER APPLICATIONS
Different elastomers will perform better in a given application depending on operating conditions of the systems, from friction to abrasion to steam. In Part 2 we look at additional sealing environmental factors to keep in mind when choosing an elastomer for your application.
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UNDERSTANDING TOLERANCE STACK-UP
In a sealing application, the tolerances of all the parts in contact with the O-ring must be considered in order to create an effective seal. The combination of these tolerances is the tolerance stack-up.
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