Although usually sold for automobile bulb sockets (for which it works great), this product is actually silicon grease.  "Dielectric" means that the silicon grease is an electronic insulator.Although ordinary automotive grease is very damaging to rubber products, silicon grease is great for ANY rubber products, and for use on ANY electronic connection (other than high-voltage switches).  Not only does silicon grease prevent corrosion at electrical contacts, it also improves existing contacts.THE DREADED BLUE SCREEN OF DEATHAfter about 5 years of flawless operation, my wife got a "blue screen of death" on her computer, mentioning a parity-check error.  Attempts to restart the computer just brought up the same "blue screen of death"---I could not even get to the minimal Windows configuration for trouble-shooting.  I removed the memory boards, cleaned the contacts with isopropyl alcohol, applied a thin layer of silicon grease to the contacts on the memory boards, and reinstalled the memory. Since then (5 years ago as of 2014), the computer has worked perfectly.As of February 2011 my (ca 10-year-old) computer had been getting progressively flakier for about 5 years---if I opened and closed several demanding applications and/or surfed the web extensively---a lockup or crash was likely---so I routinely rebooted several times a day to avoid the lockups/crashes.  Occasionally, even freshly booted up, I could not access certain files or folders (the weird solution was to move the file or folder to some other location---then it could be opened, and moved back if desired). Running registry repair programs and other diagnostics did not help.  Completely reformatting the harddrive and reinstalling Windows and all my programs from scratch did not help.  A new harddrive did not help. Cleaning usually improved stability, but only for a few weeks.  About once a month, the computer crashed with a parity-check error message---which began me thinking that I might have a similar problem with the memory board contacts.  So during a semiannual cleaning of the inside of the computer I applied a very thin layer of silicon grease to the contacts.  Until I replaced the computer three years later, it had been working like new.  REALLY!OBJECTIONS BY "EXPERTS"A number of self-appointed computer "experts" have written-in to violently object to the use of silicon grease on computer memory boards---without actually paying any attention to my explanations of why it does work.  Yes, most of the time a simple cleaning (including blowing out the dust with canned air, pulling the boards, wiping the contacts with a clean cotton cloth and reinserting them) will solve most memory-related computer problems. But---thanks to the Feds---modern "canned air" is actually liquid CO2. Be VERY careful to keep the can fully upright so you are spraying only "air".  If you tilt the can (even slightly when full) you'll get liquid CO2 which can crack (and destroy) computer components (and killed my old computer).  If cleaning doesn't work, and your computer is over 3 years old, the expense of ANY repair is likely to exceed the value of your computer.  In that case, it would seem foolish (to me at least) not to try the silicon grease.EXAMPLES OF AUTOMOTIVE ELECTRIC USESDoes your car refuse too start when it's been raining for days?  You could replace the entire ignition harness (for perhaps $100 plus labor)---or just coat the wires with silicon grease, being particular generous at the spark plug and distributor connections.  No need to wipe off excess.  Also pull off the spark plug wires (one at a time so you don't confuse them) and put a dollop of grease on the contacts.Replacing your car battery?  This stuff is far better than the petroleum jelly your father used to protect the contacts from corrosion.Replacing turn-signal or other light bulbs?  Generously coat the contacts with silicon grease---this is actually the primary application of automotive dielectric grease.EXAMPLES OF PLUMBING USESIs your bathroom faucet leaking?  Disassemble it, clean it, and rub silicon grease into all of the rubber seals.  Let it set, wipe off excess, reassemble.  Does your toilet run on and on after you flush it?  Same solution.EXAMPLES OF USES AS A LUBRICANTIs the A/C plug for your juicer hard to push into the socket?  Add a generous coating of silicon grease and stick it in and out of the socket several times to lubricate the socket.  Petroleum-based grease or oil may conduct electricity and burn---making the connection worse.  Silicon grease will not conduct electricity nor burn.Is the door lock of your car stiff?  Same solution, slather silicon grease on the key, and lock/unlock the door several times.IMPROVING ELECTRICAL CONNECTIONSDoes the right or left channel of your headphones drop out or sputter?  Silicon grease will improve the connection.Do you have to shake your TV remote to make it work? Silicon grease will improve the batteries connections.Have you noticed?  40 years ago leaking batteries destroyed uncountable flashlights and transistor radios.  Everyone knew that you had to remove batteries when not in use.  But then batteries improved in the 1980s and 1990s and almost never leaked.  But once again, (Chinese manufactured) batteries are leaking and damaging equipment.  Silicon grease will at least protect your contacts from minor leaks, and will improve already damaged contacts.RECONDITIONING RUBBER PRODUCTSDoes wind noise at high speed because of a poor door seal drive you crazy?  Coat the seal with silicon grease.  Rub it in, let it set, wipe off excessDo you have a classic car with stiff dried-out rubber seals?  This stuff is first aid.  If they aren't too dead, silicon grease will bring them back to life, and protect them from further deterioration.Sliding windows in your van hard to open/close?  Coat the channels with silicon grease.Within reason, you cannot use too much.  Unlike ordinary oil and grease silicon grease does not attract dirt.CAUTIONSilicon grease is NOT a replacement for petroleum-based grease as a lubricant for continuously moving mechanical parts.  While silicon grease can "recondition" rubber belts and rollers (in computer printers, etc) it can also make them too slippery to do their job (instead useCaiKleenTM RBR Liquid, oiler dispenser concentrate 25 mL). Silicon grease can interfere with repainting cars---so it is best to avoid getting silicon grease on painted surfaces, particularly if you anticipate repainting the surfaces in the near future.  In high-voltage switches, arcing can create silicon carbide which will deteriorate the contacts.To see my"How to Repair electronic devices damaged by bad batteries","How to Improve Rubber Seals or Revitalize Rubber Items", and"How to Improve electrical connections" guides,click on "See all my reviews" above, then click on "So you'd like to know" guides on the left side of the page