Pipe Plug, Wing Nut 2 Seals, 141-2 Series
Double Seal Wing Nut Pipe Plugs features include:
- Lightweight aluminum pipe plugs, up to 70% lighter than similar steel plugs.
- By Pass fill or vent threaded with removable cap.
- Durable cast aluminum body
- Plated steel wing nut or tee handle seal expansion
- Natural Rubber Seal is most effective at mid-range of expansion
- Most Effective at Mid-Range of Expansion
- Other configurations available for most sizes, pressure, chemical, and temperature requirements
141-Series Mechanical Hand Tightening Test Plugs Operation & Maintenance Instructions
Mechanical Pipe Plugs Without Integral Restraint Generic Operating Instructions

| Image | Dia. Max | Dia. Min | By-Pass | Pipeline Max PSI | Shipping Wt. | Item Number | Price | Qty | Action |
|---|---|---|---|---|---|---|---|---|---|
|
16.7" (425mm) | 15.6" (390mm) | 1.0 BSPP | Not Rated | 14 Lb (6.35 Kg) | 141-2160- |
$741.69
|
||
|
15.7" (400mm) | 14.4" (365mm) | 1.0 BSPP | Not Rated | 32 Lb (14.51 Kg) | 141-2150- |
$509.65
|
||
|
14.7" (375mm) | 13.4" (340mm) | 1.0 BSPP | Note Rated | 11.5 Lb (5.22 Kg) | 141-2140- |
$526.15
|
||
|
12.3" (314mm) | 11.7" (296mm) | 1.0 BSPP | Not Rated | 8 Lb (3.63 Kg) | 141-2120- |
$300.00
|
||
|
12" (305mm) | 10.8" (275mm) | 1.0 BSPP | Not Rated | 8 Lb (3.63 Kg) | 141-2110- |
$274.91
|
||
|
10.2" (260mm) | 9.6" (244mm) | 1.0 BSPP | Not Rated | 5 Lb (2.27 Kg) | 141-2100- |
$148.94
|
||
|
9.3" (235mm) | 8.5" (216mm) | 1.0 BSPP | Not Rated | 4.5 Lb (2.04 Kg) | 141-2090- |
$262.38
|
||
|
8.3" (211mm) | 7.5" (191mm) | 1.0 BSPP | Not Rated | 3.5 Lb (1.59 Kg) | 141-2080- |
$191.10
|
||
|
7.7" (195mm) | 6.7" (170mm) | 1.0 BSPP | Not Rated | 3.5 Lb (1.59 Kg) | 141-2070- |
$190.00
|
||
|
6.4" (163mm) | 5.7" (146mm) | 0.5 BSPP | Not Rated | 1.5 Lb (0.68 Kg) | 141-2060- |
$84.70
|
||
|
5.8" (148mm) | 5.4" (138mm) | 0.5 BSPP | Not Rated | 2 Lb (0.91 Kg) | 141-2055- |
$54.87
|
||
|
5.4" (138mm) | 4.8" (121mm) | 0.5 BSPP | Not Rated | 2 Lb (0.91 Kg) | 141-2050- |
$52.56
|
||
|
4.7" (120mm) | 4.3" (110mm) | 0.5 BSPP | Not Rated | 1 Lb (0.45 Kg) | 141-2045- |
$59.14
|
||
|
4.3" (110mm) | 3.7" (94mm) | 0.5 BSPP | Not Rated | 1 Lb (0.45 Kg) | 141-2040- |
$55.56
|
||
|
3.7" (95mm) | 3.4" (85mm) | 0.5 BSPP | Not Rated | 1 Lb (0.45 Kg) | 141-2035- |
$43.44
|
||
|
3.5" (85mm) | 2.9" (75mm) | 0.5 BSPP | Not Rated | 1 Lb (0.45 Kg) | 141-2030- |
$37.07
|
||
|
2.9" (75mm) | 2.4" (61mm) | 0.5 BSPP | Not Rated | 1 Lb (0.45 Kg) | 141-2025- |
$43.56
|
||
|
2.4" (60mm) | 1.9" (49mm) | 0.5 BSPP | Not Rated | 1 Lb (0.45 Kg) | 141-2020- |
$32.37
|
||
|
1.889" (48mm) | 1.456" (37mm) | 0.5 BSPP | Not Rated | 1 Lb (0.45 Kg) | 141-2015- |
$46.25
|
The Pipe Plug, Wing Nut double Seals, 141-2 Series, is designed for reliable low-pressure sealing in pipelines, drain systems, and maintenance applications. Its dual seal design improves contact within the pipe, while its lightweight aluminum construction makes handling and installation easier in the field. These plugs are available with bypass options for filling, venting, or testing needs.
How the Wing Nut Double Seals Pipe Plug Works?
The Double Seal Wing Nut Pipe Plug expands inside the pipe using a wing nut or tee handle that compresses the natural rubber seals. As the wing nut tightens, the seals expand outward, creating two points of contact inside the pipe. This dual seal arrangement improves stability and sealing performance, especially in mid-range expansion.
Each plug is built with a durable cast aluminum body that reduces overall weight, up to 70% lighter than comparable steel plugs, making its installation easier in overhead, vertical, or confined space work areas. Many models include a bypass fill or vent port with a removable cap, allowing controlled flow, testing, or venting when needed.
Key Benefits of the Double Seal Wing Nut Pipe Plug
- Lightweight aluminum body, up to 70% lighter than similar steel pipe plugs
- Durable cast aluminum construction for long service life
- Plated steel wing nut or tee handle for controlled seal expansion
- Natural rubber seals offer best performance at mid-range expansion
- Features a bypass fill/vent threaded port and removable cap
- Additional configurations available for most size, pressure, chemical, and temperature requirements
Applications of the Wing Nut Double Seals Pipe Plug
The 141-2 Series is commonly used in low-pressure pipeline isolation, testing, cleaning, and maintenance tasks. Its dual-seal design makes it suitable for situations where additional sealing integrity is preferred.
Typical applications include:
- Temporary sealing of pipelines during maintenance or cleaning
- Blocking lines for inspection or repair
- Bypass operations using the threaded vent port
- Low-pressure testing in water, drain, or sewer systems
- Isolating sections of pipe before installing valves or fittings
- Preventing debris or fluids from entering open pipe ends
Request a Quote for Double Seal Wing Nut Pipe Plug
For sizing assistance, configuration options, and pricing for the Pipe Plug, Wing Nut 2 Seals, 141-2 Series, request a quote from Petersen Products. Our team can help you select the right model for your sealing or bypass requirements.
Contact Petersen Products at sales@petersenproducts.com or 262-692-3100
Frequently Asked Questions
1. What makes the 141-2 series different from single seal plugs?
It uses two natural rubber seals instead of one, providing increased sealing contact and improved stability inside the pipe.
2. Is this plug suitable for pressure applications?
These plugs are designed for low-pressure applications. For higher pressures, other Petersen plug series may be more appropriate.
3. Why is the aluminum body beneficial?
The cast aluminum construction makes the plug significantly lighter, up to 70% lighter than comparable steel plugs, making installation easier and reducing operator fatigue.
4. What is the purpose of the bypass port?
The bypass fill or vent port allows operators to introduce flow, relieve pressure, or perform low-pressure testing without removing the plug.
5. Are other configurations available in the Double Seal Wing Nut Pipe Plug?
Yes. Petersen Products offers additional configurations to meet most size, pressure, chemical, and temperature requirements.




















Annular Seals, Inflatable and Mechanical
Custom Manufacturing Solutions
Drain Flushers & Sewer Cleaning Tools
Duct Balloons, Grout Bags, Bladders
Hot Tap Machines & Equipment
Inflation Accessories & Pipeline Fittings
Lifting Bags, Inflatable
Packers Carriers, Relining Inflatable
PeteStop® Inflatable Line Stop Pipe Plugs to block Pressurized Pipelines
PeteStop® Line Stop Systems, Components & Tools
Pipe Plugs - Inflatable All Types
Pipe Plugs - Mechanical All Types
Pipe Plugs, Inflatable Rubber Molded
Pipe Plugs, Mechanical High Pressure
Pipe Plugs, Mechanical Low Pressure
Pipe Plugs, Multi-Flex® Chemical Resistant
Pipeline Test Equipment
Temperature and Pressure Test Plugs
Tools for Contractors
