Electronic – Small enclosure. Waterproof cable entry

enclosurewaterproof

Have a 5mm diameter cable entering a small enclosure. What's the best way to seal it? I was thinking neutral cure silicone. Are there better solutions? I know cable glands are a popular way of achieving it, but they're quite bulky and would prefer to try something else even if it requires a bit more labour.

Best Answer

A flexible epoxy that you've verified to be compatible with the box material and cable jacket could work; I've used that with pretty good results in the past. A rubber or silicone grommet with a tight fit and maybe a bit of grease could work for a round cable. There are also heat-shrink and break-through cord grips that are somewhat less bulky than the normal compression type ones.