Skip to main content

Pipe Plugs

Ensure safe and reliable pipe isolation, testing, and flow control with our comprehensive range of pipe plugs. From single-size and multi-size plugs to bypass and specialty configurations, we provide dependable solutions designed to meet the demands of municipal, utility, industrial, and construction applications.

Single Size Plugs

Single-size pipe plugs are engineered to provide a secure, reliable seal within a specific pipe diameter, making them ideal for maintenance, line isolation, testing, and temporary flow stoppage applications. Their purpose-built design allows for maximum contact and sealing pressure within the host pipe, delivering dependable performance in municipal, industrial, commercial, and utility environments. Available in both pneumatic and mechanical configurations, single-size plugs are a trusted solution when precise pipe sizing and sealing integrity are critical.


Constructed from durable rubber compounds and reinforced materials, single-size plugs are designed to withstand demanding jobsite conditions while maintaining long-term reliability. Many models include lifting eyes, chains, bypass capabilities, and corrosion-resistant hardware to support a variety of testing, bypass, and flow-control applications. Their simplicity, durability, and proven performance make them one of the most widely used products in pipeline maintenance and testing operations.

Key Features

Designed for a specific pipe diameter for optimal sealing performance.
Ideal for maintenance, line blocking, and pressure testing.
Available in pneumatic and mechanical designs.
Durable rubber construction with excellent sealing characteristics.
Optional bypass and lifting configurations available.

Multi Size Plugs

Multi-size plugs provide exceptional versatility by allowing a single plug to seal multiple pipe diameters. Designed to reduce equipment inventory while increasing jobsite flexibility, these plugs are widely used by municipalities, contractors, utilities, and rental companies that work across a broad range of pipe sizes. Their wide expansion capability makes them ideal for emergency situations, routine maintenance, line blocking, and leak testing applications.


Built with reinforced rubber construction and engineered expansion controls, multi-size plugs deliver dependable sealing performance without sacrificing durability. Many designs incorporate advanced reinforcement systems, large expansion ranges, and optional flow-through or bypass capabilities, allowing a single product to handle multiple applications while reducing equipment costs and simplifying field operations.

Key Features

Covers multiple pipe sizes with one plug.
Reduces inventory requirements and equipment costs.
Reinforced construction for maximum durability.
Suitable for testing, maintenance, and flow isolation.
Available in standard, flow-through, and bypass styles.

High Pressure Plugs

High-pressure plugs are specifically engineered for demanding hydrostatic and pressure-testing applications where conventional plugs cannot safely withstand elevated test pressures. Commonly used in water mains, force mains, industrial process lines, and critical infrastructure systems, these plugs create a reliable, leak-free seal while allowing operators to conduct accurate system testing with confidence.


Featuring reinforced rubber construction, heavy-duty metal components, integrated bypass ports, and over-inflation protection systems, high-pressure plugs are designed for maximum performance under extreme conditions. Their robust construction allows them to withstand substantial testing pressures while providing safe operation and precise control during filling, venting, and monitoring procedures.

Key Features

Designed for high-pressure hydrostatic testing.
Capable of handling pressures up to 150 PSI and higher depending on model.
Reinforced rubber and steel construction.
Integrated bypass ports for filling and monitoring.
Built-in safety features help prevent over-inflation.

Bypass Plugs

Bypass plugs are designed to isolate a pipeline section while still allowing controlled flow through the center of the plug. These versatile products are commonly used in sewer bypass operations, flow diversion projects, line rehabilitation, infrastructure maintenance, and pressure testing applications where continuous flow must be maintained while work is being completed.


Available with threaded, flanged, and large-diameter bypass configurations, bypass plugs offer the flexibility needed for a wide variety of municipal and industrial applications. Whether supporting gravity flow, bypass pumping, or testing procedures, they provide a dependable seal while maintaining uninterrupted flow through the pipeline, helping reduce downtime and improve project efficiency.

Key Features

Allows flow through the center of the plug.
Ideal for bypass pumping and gravity flow diversion.
Supports testing and rehabilitation projects.
Available with multiple bypass configurations.
Suitable for municipal and industrial applications.

Air-Loc Plugs

Air-Loc® plugs are purpose-built sewer air-testing plugs designed to create isolated test sections within a pipeline for line acceptance and leak location testing. These plugs are commonly used by municipalities, engineers, and contractors to verify the integrity of newly installed or rehabilitated sewer systems and to identify infiltration, leakage, or installation deficiencies before a project is commissioned.


Designed for compatibility with Air-Loc® pressure testing systems, these plugs incorporate multiple test ports, color-coded connections, and read-back capabilities that simplify testing procedures and improve accuracy. Their rugged construction and broad size ranges make them an essential tool for sewer acceptance testing and quality assurance programs.

Key Features

Designed specifically for sewer air testing.
Creates isolated sections for leak detection and acceptance testing.
Color-coded ports simplify setup and operation.
Compatible with Air-Loc® testing equipment.
Available in single-size and multi-size configurations.

Deflection Gauges

Mandrels, also known as deflection gauges, are quality-control tools used to verify that flexible pipe has been installed within allowable deflection tolerances. Commonly specified on municipal sewer and stormwater projects, mandrels help confirm that proper bedding, backfill, and installation procedures have been followed before a pipeline is accepted for service.


Available in both steel and lightweight aluminum designs, mandrels are manufactured to meet ASTM and project-specific requirements for pipe deflection testing. Their open-frame construction allows debris to pass through during inspection while providing accurate measurement of pipe roundness and structural integrity. By identifying excessive deformation before commissioning, mandrels help ensure long-term system performance and compliance.

Key Features

Verifies pipe deflection and roundness.
Helps ensure compliance with ASTM standards.
Available in steel and aluminum configurations.
Open-frame design allows debris pass-through.
Essential for sewer and utility quality-control programs.

Click HERE to view our Rental Catalogue!