Tube Plugs for
Heat Exchangers & Boilers

What Are Tube Plugs Used For?

Tube plugs are used to seal off damaged, leaking, or failed tubes in heat exchangers, boilers, condensers, and shell-and-tube systems. Instead of taking an entire unit offline for repairs or replacement, maintenance teams can plug individual tubes and return equipment to service quickly — reducing downtime and maximizing uptime.

Common applications include petrochemical refineries, power generation facilities, HVAC systems, offshore platforms, and industrial manufacturing plants.

Types of Tube Plugs

USA Industries offers a full range of tube plug types engineered for different pressure ratings, tube materials, and installation requirements:

• Snap It® Engineered Tube Plugs — Patented snap-fit design for fast, reliable installation without special tooling. Ideal for high-volume turnarounds.
• Metal Tapered Tube Plugs — Standard mechanical plug for most heat exchanger applications. Available in carbon steel, stainless steel, and exotic alloys.
• Threaded Metal Tapered Tube Plugs — For applications requiring additional pull-out resistance.
• Low & High Pressure Expandable Rubber Plugs — Reusable plugs for temporary sealing and testing applications.
• Two-Piece Metal Tube Plugs — For extra-thick tube walls and high-pressure environments.
• Cork Tube Plugs (Stoppers) — Low-cost solution for temporary or light-duty plugging applications.
• Rubber Tube Plugs (Stoppers) — Low-cost solution for temporary or light-duty plugging applications.
• Phenolic Tube Plugs (Stoppers) — Low-cost solution for temporary or light-duty plugging applications.
• Header Plugs / Shoulder Plugs — Designed for header box and manifold applications.

Tube Plug Material Options

We supply tube plugs in a wide range of materials to match your tube metallurgy and process conditions:

• Carbon Steel (CS)
• 304 & 316 Stainless Steel (SS)
• Duplex & Super Duplex Stainless Steel
• Brass & Copper Alloys
• Titanium
• Monel, Inconel, Hastelloy
• Custom alloys available on request

How to Select the Right Tube Plug

Selecting the correct tube plug requires matching the plug OD to your tube ID, and confirming the plug material is compatible with your process fluid and temperature range. Key selection criteria include:

• Tube inner diameter (I.D.) and wall thickness
• Operating pressure and temperature rating
• Tube material and process fluid compatibility
• Whether installation is permanent or temporary
• Accessibility — can you reach both ends of the tube?

Use our Tube Size Chart or call our technical team to confirm the right plug for your application.

Why Choose USA Industries Tube Plugs?

USA Industries has been manufacturing precision tube plugs for over 40 years. Our products are trusted by maintenance engineers, plant operators, and EPC contractors at major refineries and industrial facilities across North America and worldwide. We offer:

• One of the largest in-stock tube plug inventories in the industry
• Fast shipping from our closest service center location
• ISO 9001:2015 certified manufacturing
• Custom sizes and materials available
• Technical support from experienced engineers