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I am thinking buggy springs. Maybe early auto leaf springs?
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When I was young I had a buddy who spread and greased Jeep springs and then wrapped them in tape like a cocoon. He left town so I never heard how long it lasted. I doubt it lasted long.
If it did springs would come with zerk fittings to grease them from the factory."
Some cars DID come from the factory with Zerk fittings for the leaf springs. They had a wrap (not tape - it looked more like shrink-tubing for insulating wires) over the set, and a single fitting to fill the wrap. I believe that someone made a tape-like material for fabricating custom covers, but I've never seen it. I believe that the latest car I saw this on was an AC Cobra, a fairly early one, but I'm pretty sure there were others. Use of single-leaf springs, and fiberglass springs, ended that idea. My Triumph TR-4 had Zerks on the sheaths of the handbrake cables: there's something that would STILL be a good idea, if people only used them once in a while so that they didn't "freeze".
The technical term for the over-wrap on multi-leaf springs is "gaiter." They go WAY back: see
http://tinyurl.com/d2njvsj. Note mention of ability to lube without removing them in article. Indian motorcycles w/ leaf springs used gaiters with an oil reservoir, rather than Zerks.