Adhesive Teflon tape (actually, UHMW tape — Ultra High Molecular Weight polyethylene) provides insulation to prevent damage due to contact of dissimilar metals. It is typically used by Sea-Bird on the inside of hose clamps used for mounting instruments, where U-bolts hold a Carousel Water Sampler frame to an extension stand, etc. The tape can be ordered from Sea-Bird; part number 30409 is 1 inch wide x 0.1 inch thick x 1 foot long (2.5 cm x 0.25 cm x 0.3 m). It can also be purchased from the manufacturer, Crown Plastics (see www.crownplastics.com for local distributors).
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