Drawing

3M™ Scotchrap™ Tapes 50, 51 & Pipe Primer, 3M™ Scotchfil™ Electrical Insulation Putty
3 of 4
Typical Properties,
continued
Not for specifications. Values are typical, not to be considered minimum or maximum.
Properties measured at room temperature 73°F (23°C) unless otherwise stated.
3M™ Scotchrap™ Tapes 50 and 51, All-Weather Corrosion Protection Tapes,
continued
Property
(Test Method ASTM D-1000 unless otherwise
stated)
50 Tape
US units (metric)
51 Tape
US units (metric)
Water Vapor Transmission Rate
(ASTM D-3833)
g/100 in
2
(645 cm
2
) /24 hrs
1.0 1.0
Moisture Absorption (ASTM D-570)
.30% .35%
Resistance to Weathering (3M)
Weatherometer 100 Hrs. 100 Hrs.
Dielectric Break Down Voltage
12,000 volts 20,000 volts
Normal Application
Temperature Range +10°F to 150°F
(-12°C to 65.6°C)
+10°F to 150°F
(-12°C to 65.6°C)
Normal Service
Temperature Range -55°F to 175°F
(-48°C to 80°C)
-55°F to 175°F
(-48°C to 80°C)
Note: For 3M™ Scotchrap™ Tapes 50 and 51 to work properly, all metal surfaces must be coated with
3M™ Scotchrap™ Pipe Primer before wrapping with the tape.
Tape Width # Rolls per Square
1” 12
2” 6
4” 3
6” 2
12” 1
All widths are in 100 ft. rolls. 1 square = 100 sq. ft. (i.e., a roll 1 ft. wide x 100 ft. long)
To convert to rolls, multiply the number of squares by the number of roll/square from the above tables
3M™ Scotchrap™ Tapes 50 and 51, All-Weather Corrosion Protection Tape – Pipe Coverage Table
Paper Size Squares of Tape for 100 Linear Ft. Pipe
Nominal I.D.
(
Inches
)
O.D.
(
Inches
)
Su
gg
ested Ta
p
e Width Minimum Overla
p
1/2” Hal
f
-La
pp
ed
1/2 0.84 1 0.44 0.44
3/4 1.05 2 0.37 0.55
1 1.32 2 0.46 0.69
1-1/4 1.66 2 0.58 0.87
1-1/2 1.90 2 0.66 0.99
2 2.38 2 0.83 1.25
2-1/2 2.88 2 1.00 1.51
3 3.50 4 1.05 1.83
3-1/2 4.00 4 1.20 2.09
4 4.50 4 1.35 2.36
5 5.57 4 1.59 2.92
6 6.63 6 1.89 3.47
7 7.63 6 2.18 3.99
8 8.63 6 2.46 4.52
10 10.75 6 3.07 5.63
12 12.75 6 3.64 6.67
14 14.00 6 4.00 7.33