sump pump switch waterproofing?

[fuzzysig]

zoeller sump pump is great but notorious for switch burning out.

its sealed but dsign [censored] or purposely made to fail it seems, since the design hasn't changed for years and switches burn every few years

its a sealed enclosure with an arm switch
seals leak water gets in switch burns>> crawl space full of water


I was thinking besides sealing with silicone around the seals and wires.

should I cover it with dielectric grease inside? so if the water gets in it will not short out the switch or at least not right away.

or is there another grease I can use to seal contacts

or should I use liquid tape instead and just seal them instead of using grease

 

[Warstud]

After my first one corroded . I used dielectric grease on the wires and sealed it with silicone.