Reed Relays and
Electronics India Limited
Manufacturer of Reed Switches, Reed Sensors and Reed-based products
Reed Relays and Electronics India Limited Incorporated in 1971
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Encapsulation and Potting

When potting or encapsulating reed switch assemblies in custom housings, the choice of materials plays a critical role in ensuring durability and reliability. It’s essential to carefully select potting compounds or sealants based on their hardness, coefficient of expansion, and compatibility with the reed switch’s components.

Epoxy and other sealants used for potting or encapsulation should be chosen with considerations for their mechanical properties and ability to provide adequate protection against environmental factors such as moisture and mechanical shock. For instance, some encapsulation compounds require a curing period of up to 24 hours, during which it’s crucial to shield the delicate glass seals with a resilient, shock-absorbing material like silicone. Additionally, flexible heat shrink tubes can be employed beforehand to further safeguard the glass and seals from potential damage before potting.

When working with two-component potting and encapsulation compounds, precise mixing and dispensing procedures are imperative. It’s recommended to mix smaller batches and apply them within a controlled timeframe of 7-10 minutes to ensure proper curing and optimal performance of the encapsulated reed switch assembly. Better still, would be to use dispensing machinery that mix the right ratio at the time of dispensing instead of mixing the compounds and using single component dispenser as the viscosity would change from the start to the finish.

According to industry best practices and recommendations from materials and electronics manufacturing experts, the selection and application of encapsulation materials directly influence the longevity and operational reliability of reed switch assemblies. By adhering to these guidelines, manufacturers can enhance the resistance of their products to environmental stresses and mechanical impact, thereby extending their lifespan and maintaining consistent performance in diverse applications ranging from automotive sensors to industrial automation systems.

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