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ENHANCED SEAL INTERFACE

IP.com Disclosure Number: IPCOM000006673D
Original Publication Date: 1992-Dec-01
Included in the Prior Art Database: 2002-Jan-22

Publishing Venue

Motorola

Related People

Authors:
Timothy Fisher Keith Meny

Abstract

Housing/cover plate seal interfaces that protect del- icate electronics must resist volatile chemicals, abrasion, and even submersion in some cases. These specitica- tions require an extremely robust seal. For many appli- cations, a wet-seal, which is dispensed in such a way that it penetrates all gaps prior to curing, is the best choice. Unfortunately, the most robust wet-seal materials are not always compatible with Design for Manutacturabiity due to their long cure schedules, which can drastically increase process cycle time. However, the cure times of sealants that polymerize upon exposure to the ambient (air, humidity, etc.) can be reduced through proper inter- face design. The seal design must also be compatible with the mechanical fastening technique. Crimping of the housing to the cover plate minimizes the number of parts required while providing a reliable fastening method.