Join Date: Feb 2013
Location: Brisbane, Australia
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The first deck fittings I used the particular tape I'm using on were done nearly 2 years ago and so far no problems. I was worried that the tape might leave a stain behind but that doesn't seem to be a problem either.
I guess the properties that make the tape good for electrical use in that the tape is likely to be exposed to the weather and must keep water out, also make it good for sealing deck fittings.
Here is a description of the particular type of tape I'm using...
NITTO no. 15 self-fusing butyl tape
Nitto no. 15 is a self-fusing butyl-based tape that does not require a liner, thereby reducing the time required to apply the tape during assembly. The tape has extremely good electrical properties, superior weatherability and resistance to water. Established areas of application include: corrosion protection of wires and cables on through connections and branch couplings, insulation of high-voltage cables, sealing cable heads, repairing cable sheaths, corrosion protection of pipes, pipe connections and installations, as filler material to compensate for unevenness.
-55°C to +105°C
Excellent workability due to linerless system
Exceptional electrical properties
Extremely resistant to moisture, water and chemicals
Superior weatherability and ozone resistance
Self-amalgamates within 12 hours when stretched at 100 - 150%