Nextera Insulations offers high-quality Stainless Steel Expansion Springs (also referred to as Breather Springs) for securing insulation on pipe, tanks, vessels, and any equipment subjugated to regular frequent thermal expansion or contraction.

These springs pair up very well with metal strapping up to (and including) 19 mm (¾” width). The use of expansion springs helps to maintain the integrity of the insulation in a variety of industries including oil & gas, power generation, marine, and HVAC.

Product Description

Expansion springs are designed to achieve and maintain a clamping force at the insulated surface in spite of substrate expansion and contraction levels as a result of changes in temperature.

The springs are manufactured from the highest quality stainless steel grades (SS 304 and SS 316). The expansion springs provide outstanding corrosion resistance, high tensile strength, and long-lasting elasticity as necessary for several indoor and outdoor insulation applications.

Design & Manufacturing

Material Grades

• SS 304 – Standard high-tensile stainless steel with good corrosion resistance.
• SS 316 – Marine grade stainless steel with the best resistance to chlorides and harsh environments.

Compatibility

• Compatible with ALL common strapping widths up to 19 mm (¾ inch).

Installation Method

• Connected to stainless steel wing seals
• Strapping passes through the spring ends, is tensioned around the insulation, and secured to maintain constant pressure

Spring Lengths

• Multiple size options to match insulation system requirements

Key Features

• Maintains insulation security under thermal expansion and contraction
• Corrosion-resistant stainless steel for extended service life
• Evenly distributes stress to prevent insulation damage
• High tensile strength for demanding industrial environments
• Easy installation and removal for maintenance
• Available in multiple lengths and grades to suit project needs

Typical Applications

• Insulation fastening for hot and cold pipelines
• Securing insulation on tanks and vessels
• Marine and offshore insulation systems
• HVAC duct insulation with temperature variation
• Power plant and refinery equipment insulation

Installation Guidelines

• Recommended pre-stretch: ½ inch at installation for optimal tension
• Allows an additional 2 inches expansion capacity during service
• Maximum stretch of a 4-inch spring: 2½ inches beyond original length
• Distribute springs evenly around the circumference to maintain balance and avoid localized stress

Why Choose Nextera Expansion Springs?

• Extensive experience supplying fastening hardware for industrial insulation
• Availability in UAE stock for quick delivery
• Custom sizing and material grades available on request
• Technical guidance for correct spring selection and installation
• Products manufactured to meet stringent and ASTM standards

Frequently Asked Questions 

1. What are stainless steel expansion springs used for?

Stainless steel expansion springs, also known as breather springs, are used to secure insulation on pipes, tanks, vessels, and equipment exposed to regular thermal expansion and contraction. They maintain clamping force, prevent insulation damage, and ensure long-term system integrity in industries such as oil & gas, marine, power generation, and HVAC.

2. What is the difference between 304 and 316 stainless steel expansion springs?

• SS 304: Standard high-tensile stainless steel with excellent strength and corrosion resistance for general industrial applications.
• SS 316: Marine-grade stainless steel with added molybdenum, providing superior resistance to chlorides, seawater, and harsh chemical environments — making it ideal for coastal and offshore installations.

3. What strapping sizes are compatible with expansion springs?

Nextera expansion springs are compatible with all stainless steel strapping widths up to 19 mm (¾ inch). They are typically installed using wing seals, ensuring easy fastening and consistent clamping pressure.

4. How much expansion capacity do the springs provide?

Each expansion spring is designed to pre-stretch by ½ inch at installation and allows up to 2 inches of expansion during service. A standard 4-inch spring can stretch an additional 2½ inches beyond its original length, ensuring reliable insulation security during temperature fluctuations.

5. Why choose Nextera stainless steel expansion springs?

Nextera offers high-quality, ASTM-compliant stainless steel springs designed for durability, easy installation, and resistance to corrosion. With availability in UAE stock, custom sizing options, and technical guidance, Nextera ensures your insulation fastening system performs safely and reliably under extreme conditions.

Get in Touch

For reliable fastening solutions that maintain insulation integrity under thermal movement, choose Nextera Stainless Steel Expansion Springs.

Call: +971 4 2633071
Email: sales@nexterainsulations.com
Visit: www.nexterainsulations.com