inkslngr,<br><br>I'm a big fan of practically all 3M products. Their adhesives are top quality. If you want good tapes, their Scotch brand duct tapes and electrical tapes will do it.<br><br>Doug specifies that he uses the 3M/Scotch brand "Super 33+" electrical tape. I have some, and it's good stuff.<br><br>While 3M's site merely says they have "introduced new versions of Scotch brand Super 33+, Super 88 and 35 vinyl electrical tapes, which perform better in extreme temperatures", another company named Beck Electric Supply has some somewhat more thorough info regarding the various 3M/Scotch tapes online at
http://www.beckelectric.com/tapes.html<br><br>According to
their descriptions, the Super 33+ is for temperature extremes, while the Super 35 seems to mainly be for color coding, and the Super 88 is heavy duty thick stuff, but not as heavy duty as their thickest 22 tape. They don't mention the 700 "Commercial Grade" stuff, but the wording on the packaging for that type says it is "Suitable for use from -10°C(14°F) to 90°C(194°)". That's pretty good, even if it doesn't quite match the Super 33+ specs. Since Super 35 comes in colors, it might be good for marking trails or other signal needs in a survival situation. Since I doubt this stuff is particularly biodegradable, I would suggest keeping it in/on your PSK for use only in true emergencies, and keeping a roll of surveyors' flagging tape or ribbon in your ruck for any more casual use.<br><br>So:<br>For colors: Super 35<br>For heavy duty thick stuff: Super 88, or better still, 22<br>For temperature extremes: 700 Commercial Grade, or better still, Super 33+<br><br>Of course, I only know about 3M/Scotch products, and there are many other companies making electrical tape.