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Low Pressure Nylon Expansion
Plugs Sizes 0.5" to 6"
These superior, versatile, expandable plugs are used to
accommodate a wide variety of industrial applications where an
airtight seal is required.
COB Advantages:
 | Quality, Lightweight, Durable Nylon 20% lighter than metal. |
| Tough/shatter-proof and easily cleaned and maintained,
corrosion resistant. |
| Plaster or cement do not adhere to the plug. |
| Friction-reducing acetyl copolymer thrust washer inserted
between plate and wing nut provides for easy expansion. |
| Natural Rubber provides "superior" seal. SS withstand
60-100PSI, VS withstand 24-42 PSI. |
| Larger sizes incorporate strengthening ribs to provide
rigidity in use. |
| Will withstand up to 100 ft. head of water. |
| Silicon, nitrile, and viton seals available |
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Solid Stem
/ SS-0.50" to 1.50" |
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Item Number |
Nominal Size |
Size Unexpanded |
Size Expanded |
Unit Weight (LBS.) |
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SS0.50 |
0.50" |
0.490" |
0.600" |
1/4 |
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SS0.75 |
0.75" |
0.740" |
0.900" |
1/4 |
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SS1.00 |
1.00" |
0.975" |
1.200" |
1/4 |
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SS1.25 |
1.25" |
1.225" |
1.450" |
1/4 |
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SS1.50 |
1.50" |
1.480" |
1.750" |
1/4 |
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***SS series now available with vented stem |
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HOLLOW STEM / VS-0.50" TO 6" |
| Item Number |
Nominal Size |
Size
Unexpanded |
Size Expanded |
Unit Weight
(LBS.) |
| VS0.50 |
0.50" |
0.490" |
0.600" |
1/4 |
| VS0.75 |
0.75" |
0.740" |
0.900" |
1/4 |
| VS1.00 |
1.00" |
0.975" |
1.200" |
1/4 |
| VS1.25 |
1.25" |
1.225" |
1.450" |
1/4 |
| VS1.50 |
1.50" |
1.420" |
1.930" |
1/4 |
| VS2.00 |
2.00" |
1.930" |
2.360" |
1/4 |
| VS2.50 |
2.50" |
2.400" |
2.760" |
1/4 |
| VS3.00 |
3.00" |
2.870" |
3.310" |
1/3 |
| VS4.00 |
4.00" |
3.540" |
4.250" |
1/2 |
| VS5.00 |
5.00" |
4.720" |
5.370" |
1 |
| VS6.00 |
6.00" |
5.500" |
6.290" |
1 |
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Brochure PDF |
Pipe Plug Brochure
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