Terminal Corrosion - Sealant required
Terminal Corrosion - Sealant required
(OP)
I was looking for a sealing material that is non-conductive and is both impervious to diesel and salt water. The sealant is to be used on Stainless Steel, Perspex and mild steel.





RE: Terminal Corrosion - Sealant required
For terminal protection we use Nilox dielectric grease. For the enclosures we spray with Nylac.
RE: Terminal Corrosion - Sealant required
Sorry about the vagueness. The terminals (24VDC about 7mm diameter) are mild steel that are mounted on a Perspex block inside a stainless steel enclosure (about 25cm in diameter. However the stainless steel enclosure over time has moisture ingress which causes seawater and diesel to reach the terminals. I was originally thinking of filling the termination chamber with packing grease, but I wasn’t sure of which greases were available that were impervious to fuel attack?
RE: Terminal Corrosion - Sealant required
The primary purposes of the grease are to keep out moisture, and prevent corrosion. Prevention of corrosion keeps the metal-to-metal contact point in a connector conducting electricity. I would try a moderate amount of silicone dielectric grease for coating terminals, like Locktite or Permatex.
Overfilling with grease can cause heat build up in some cases.
RE: Terminal Corrosion - Sealant required
As a Marine Enginer of many years standing I now work for a Company called Metatec based in Portsmouth. This Company supplies many sealants to the Marine trade. The person to contact there is Alex Edge, their technical Manager who is a wiz kid on sealants. Tell him exactly what the application is for and I'm sure he will come up with a solution. His mobile is 07711186057 and Metatec's office No is 0239238 1382 The contact there is Barry White.
Regards
Chris Chapman