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