The really thick duct tape that only comes in the 3" width.
thick glues on it, fabric reinforcements and thicks base.
the thinner 2" width duct tape has much less glue and substance
over time either of these will get hard and crusty, unless it is some premium brand (and i tried them to and they suck).
the only thing that duct tape should not be used for is Ducts :-) honestly , in about 7 years it will be all crusty and the glue no longer stickey. most useless stuff , for anything other than short term fixes.
Vinyl Electrical tape has a very light glue, a good stretch, and is good for making multi wraps, stretched out before application it can do some squeezing of a diameter. but with limited glue and the glue is effected by heat easily (as many of them are) . finish a tight wrap with a final unstretched wrap and lay, and it will hold minor stuff.
the only thing that electrical tape should not be used for is electical, Again i am not kidding. it is completly unsafe as is can slide back, or move , and also unravel, exposing again what you wraped it with.
only heat shrink and things like proper connectors and the screw on caps really work for electrical connections.
Gaffers, a completly different and often more expencive form of duct tape. it has more flex, more fabric type reinforcement but less glue.
the glue is still effected by heat. It is often used for temporary wire laying (ducting) and securing because the glue releaces when your done. With caveats, the glue comes off if it gets walked on, heated a lot, or stays on the item for long.
gaffers IS indeed good for gaffers :-) , as long as it is for short term use.
i find that gaffers tapes will tend to last longer in time, and in weather condititions, the glue can slip some in heat conditition, because there is less glue it is not as bad in that respect.
Gaffers also works better for ducting and electrical, because it is more flexable and thinner. Gaffers and similar tapes of that type, will be used to "wrap" handles and tennis rackets and baseball bats. not the long term , but easily replaced because it comes of again (mostly).
Used as a multi wrap it would put a crush on a diameter, sufficentally.
Dont get Sold cheap duct tape when buying gaffers, gaffers is gaffers , and duct is duct, but some BSers like to sell cheap duct as gaffers, gaffers isnt cheap.
Then i could tell you about some of the clear and semi clears, but that is about it for consumer , found anywhere stuff, that would use the words "bond".
for 2 sided stick, there is a new dark foam tape that replaces the (complete garbage) white foam tape that existed, Called "mounting tape" it is 3m or scotch and it last long times and actually does hold things. it has a good flex. it can be used as a soft wrap tape with a good flex and stick , if you have a way to deal with the sticky being on both sides.
when i say time, i mean years, and when it comes to time and really using tape for anything, it all sucks, Nuts and bolts, hose clamps, screws, Super77 , and auto trim adhesives, and mabey liquid nails might really hold something. a good silicon will last time but no holding properties.
Side notes : aparentally good HVAC ducters have a premium tape for doing ducts, that is NOTHING like the junk duct that we have access to.
oh hey what was the question :-) some of this is going to be important some day, even if it might not be what you needed.
Edited by Psycogeek - 9/21/11 at 3:41am