Pipe Plug, Rigid Core, Bypass 126 Series
For most size, pressure, chemical, and temperature requirements
126-Series Features:
- Safety and environmental risks reduced with these heavy duty bore hole pipe plugs
- May be customized for most size, pressure, temperature, and chemical requirements
- Polyurethane Inflatable Seal
- Other materials available for chemical and temperature requirements
- These synthetic materials do not age like natural rubber plugs
- Higher pressure and more robust than typical inflatable plugsPorts optional on both ends allows connecting two or more series connection
- Bypass Through the center allows pressurizing or monitoring pipeline
- Much Longer pipe contact length than most other plugs
- Alternative uses for the 126 series includes expanding elastic materials for thermal forming process, shrink fit assembly and even vulcanizing
- Anchor points both ends

| Image | Dia. Max | Dia. Deflated | By-Pass | Infl. Press. Required | Pipeline Pressure Max Head | Port, Inflation | Length Deflated | Shipping Wt. | Item Number | Price | Qty | Action |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
12" (305mm) | 11" (279mm) | 2 F | 200 psi (13.8 bar) | 100 psi (6.89 bar) Air, 150 psi (10.34 bar) Water | 1/4" NPT One End | 22" (559mm) | 110 Lbs | 126-112- |
$3,040.00
|
||
|
10" (254mm) | 9" (229mm) | 2 F | 200 psi (13.8 bar) | 100 psi (6.89 bar) Air, 150 psi (10.34 bar) Water | 1/4" NPT One End | 18" (457mm) | 38 Lb (17.24 Kg) | 126-110- |
$2,300.00
|
||
|
8" (203mm) | 7" (178mm) | 2 F | 200 psi (13.8 bar) | 100 psi (6.89 bar) Air, 150 psi (10.34 bar) Water | 1/4" NPT One End | 16" (406mm) | 26 Lb (11.79 Kg) | 126-108- |
$2,080.00
|
||
|
6" (152mm) | 5.5" (140mm) | 1 F | 200 psi (13.8 bar) | 100 psi (6.89 bar) Air, 150 psi (10.34 bar) Water | 1/4" NPT One End | 12" (305mm) | 14 Lb (6.35 Kg) | 126-106- |
$1,590.00
|
||
|
4" (102mm) | 3.5" (89mm) | 1/2 F | 200 psi (13.8 bar) | 100 psi (6.89 bar) Air, 150 psi (10.34 bar) Water | 1/4" NPT One End | 12" (305mm) | 6 Lb (2.72 Kg) | 126-104- |
$954.00
|
||
|
3" (76mm) | 2.5" (64mm) | 1/4 F | 200 psi (13.8 bar) | 100 psi (6.89 bar) Air, 150 psi (10.34 bar) Water | 1/4" NPT One End | 10" (254mm) | 4 Lb (1.81 Kg) | 126-103- |
$899.00
|
||
|
2.382" (60.5mm) | 1.875" (48mm) | 1/8 F | 200 psi (13.8 bar) | 100 psi (6.89 bar) Air, 150 psi (10.34 bar) Water | 1/4" NPTOne End | 8" (203mm) | 3 Lb (1.36 Kg) | 126-102- |
$839.00
|
The Rigid Core Bypass Pipe Plug 126 Series is a robust solution designed for the most demanding pipeline and bore hole applications. This plug, with its hard core and long-lasting polyurethane inflatable seal, is perfect for isolating pipe sections, performing high-pressure testing, and monitoring fluids in extreme conditions.
Designed for strength, precision, and adaptability, is trusted in industries requiring safe and effective pipeline control, such as oil and gas, mining, infrastructure maintenance, and manufacturing.
How Does a Rigid Core Bypass Plug Work?
A rigid core bypass plug combines the flexibility of inflated sealing with the durability of a solid interior construction. Unlike traditional inflatable plugs, which rely entirely on air pressure to mold and seal, the rigid core adds stability—especially in deep bore holes or high-pressure situations.
The inbuilt bypass channel runs through the middle of the plug, allowing users to pressurize, vent, or monitor pipeline conditions without having to remove the plug. This makes it ideal for tasks requiring continuous access or flow while isolated.
Real-World Applications of the Rigid Core Inflatable Pipe Plug
Rigid Core Bypass Pipe Plug 126 Series is designed for use in a wide range of demanding applications. Its robust construction and bypass functionality make it ideal for locations where sealing and access are essential.
- Borehole Pressure Testing and Sealing: Creates reliable, long-lasting seals in deep boreholes for geotechnical and environmental testing.
- Pipeline Repair, Isolation, and Monitoring: Used to isolate sections of pipe for maintenance or repairs while still allowing pressure monitoring and fluid bypass.
- Oil, gas, and mining operations: Ideal for downhole applications and well interventions which require durability and pressure tolerance.
- Manufacturing and Process Applications: Useful in thermal forming, shrink-fit assemblies, and vulcanizing processes where expanding materials must be controlled under pressure.
- Custom Industrial, Municipal, and Offshore Applications: Adaptable to specific sealing, testing, or flow-through requirements across a wide range of industries.
Whether installed above or below ground, the borehole plug 126 Series provides reliable performance in conditions where other plugs may fail.
Why Choose Petersen Products for Rigid Core Inflatable Pipe Plugs?
With over a century of experience in industrial sealing solutions, Petersen Products is a well-known name in pipe plug innovation. Our Rigid Core Bypass Plugs 126 Series reflect our dedication to engineering quality, providing reliable performance in some of the most challenging environments.
We specialize in custom plug designs to fulfil specific size, pressure, and chemical requirements, and we back them up with rapid technical assistance that understands fieldwork expectations. Professionals in energy, infrastructure, manufacturing, and heavy industry rely on Petersen for long-lasting, purpose-built solutions that perform under pressure.
Buy Rigid Core Bypass Pipe Plugs from Petersen Products
Petersen Products offers high-quality Rigid Core Bypass Pipe Plugs 126 Series that are ideal for demanding applications. With over a century of engineering experience, we offer specialized solutions for pipeline testing, borehole sealing, and other applications. Our plugs are designed to be long-lasting, reliable, and easy to integrate into your workflow.
Choose Petersen for designed accuracy and trustworthy service. Please contact us at 262-692-3100 or sales@petersenproducts.com for quote or advice.
FAQs
What is the difference between the Rigid Core Bypass Plug 126 Series and standard inflatable plugs?
The Rigid Core Bypass Plug has a rigid core, which improves stability and strength, making it ideal for high-pressure, isolated, or demanding locations. Unlike most inflatable pipe plugs the rigid core offers greater durability and performance under extreme conditions.
What are the primary applications for the Rigid Core Bypass Plug 126 Series?
The Borehole Pipe Plug 126 Series is ideal for borehole pressure testing, pipeline isolation and repair, fluid monitoring, oil and gas well intervention, and even manufacturing operations such as heat forming and vulcanizing. Its adaptability makes it appropriate for both standard and specialized industrial applications.
How does the bypass channel function in the Rigid Core Bypass plug 126 Series?
The bypass channel goes through the middle of the plug, allowing users to pressurize, vent, and monitor the pipeline while the plug is still in place. This functionality is critical for ensuring continuous flow or monitoring pipeline conditions while isolated.
Can the Rigid Core Plug 126 Series be customized for a specific application?
Yes, we offer customization options for the Rigid Core Plug 126 Series, such as size, pressure rating, chemical, and temperature requirements. Contact us to discuss your specific situation and we will tailor a solution to match.









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