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When designing an enclosure, sealing is a critical consideration; one that must take into account the environmental factors that the enclosure will be subject to.

While the final choice of a sealing material should be made by a professional (such as our materials experts, who work in tandem with industrial designers and engineers), here are a few material characteristics to take into consideration. This is not a conclusive list, so give us a call if you have questions.

  1. Wide temperature range: Choose a silicone foam such as BISCO Silicone, or a silicone sponge material.
  2. UV/ozone resistance: EDPM, silicone sponge and BISCO Silicone foam are the best options.
  3. C-set resistance: A polyurethane such as PORON (medium or high density) is a good choice, as well as BISCO Silicone.
  4. Solvent and chemical resistance: Choose a PVC material (although it has a narrow temperature range) or vinyl nitrile, which also resists petroleum.
  5. Acid/base resistance: Neoprene will be your best option.
  6. Low outgassing: Choose a silicone foam such as BISCO Silicone, a silicone sponge material, or a polyurethane such as PORON (medium or high density).
  7. Superior flame resistance: Consider a silicone foam such as BISCO Silicone.
  8. Low cost: Polyethylene is low cost, but it has a low c-set, low force relaxation, and low PSA anchorage.

As you can see, choosing the right enclosure sealing material can be quite a challenge. Our materials experts are here to help you every step of the way. Our engineers work in compliance with NEMA and UL certification requirements, EMI and RFI considerations, and environmental safety regulations. Ready to get started on your gaskets or seals?

Contact us to send us your enclosure design specs or to get sealing material information from our engineers.

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