An Introduction to the Applications and Benefits of Fasteners

Firwin’s removable insulation blankets are usually fastened with stainless steel lacing wire, which is supplied with the majority of insulation orders. Sometimes, a customer may require an alternative fastening system and occasionally the customer’s application may necessitate a quick or frequent installation, or the removal of the insulation blankets.

To accommodate the individual requirements of each customer, Firwin also provides several types of fasteners. Firwin’s adaptable range of insulation blankets can also be fastened with springs, straps, snaps, and Velcro. These selections allow for alternative fastening systems and more accessible methods of opening and closing insulation blankets.

All fastening methods have benefits and weaknesses making it important to determine which method is correct for the application. When selecting a fastener type for an insulation blanket, the following questions should be asked:

  • How frequently will the insulation blanket be accessed?
  • Are there any environmental features, such as corrosive elements, temperature, or potential water exposure that need to be accounted for?
  • Which installation process will be used?
  • How much give is required from the insulation blankets?
  • Will a professional contractor be used, or will it be self installed?

Choosing the correct fastener for specific application needs can be found by answering those questions.

Applications and Benefits of Each Fastener Type

The following descriptions explain how each fastener type has characteristics suited to particular applications:

Stainless Steel Lacing Wire

Firwin’s most popular insulation blanket fastener is stainless steel lacing wire. Stainless steel lacing wire gives an ultra secure fit and is highly durable.

The advantages provided by stainless steel lacing wire are as follows:

  • It can be tied or bent into any required configuration
  • Stainless steel is highly resistant to corrosion
  • As it is highly durable, there is no need for maintenance or repair


Firwin’s silicone or Teflon straps can be utilized to fasten insulation blankets for quick installation. The advantages of straps include:

  • A snug fit can be achieved due to being able to pull it tightly
  • The straps are low stretch, non abrasive, weather resistant, and strong
  • The straps can be fitted into various locations
  • They are easier and more intuitive to use than lacing wire


Firwin developed a proprietary spring system in-house for attaching insulation blankets. Unconvinced with alternative spring fastener solutions, Firwin worked with a local manufacturer to create a spring fastener that was easy to use and had a long lifespan. Some of the advantages of springs are as follows:

  • Being corrosion resistant, springs are perfect for applications with corrosive environmental elements
  • They can be fastened and removed easily for short term applications or uses that require consistent removal and reinstallation
  • Springs do not degrade and maintain their integrity over time
  • Springs are able to operate at high temperatures


Firwin also provides snap closures to the insulation blankets which are a cost-efficient alternative. The advantages of snaps include:

  • Exceptional shear strength
  • They can be released quickly and simply when pulled at from an angle which makes them ideal for applications that require quick-removal

Where applications require blanket design with complex geometries or an amount of give when fastening the blankets, snaps may not be an appropriate fastening solution.


Velcro provides a perfect solution for fastening blankets simply and quickly. The applications for Velcro vary widely as it can be used as a supporting fastener for others, or on its own.

Velcro is made from various materials, such as polyester, stainless steels, and nylon. The variety of Velcro used depends completely on the application.

The tiny Velcro hooks are prone to damage, therefore it is important to make sure that the Velcro material can cope with the environmental factors of the operation. As an example, the more costly Nomex or stainless-steel Velcro may be required in applications dealing with high temperatures.

The advantages of Velcro as a fastener for insulation blankets include:

  • Simple removal and installation
  • They are ideal for applications with a lower temperature
  • They are affordable (although particular types of Velcro such as stainless steel or Nomex are more expensive)

Fasteners from Firwin

There are a range of different fastening methods available and the most appropriate method for a particular application is dependant on a number of factors such as speed of installation, frequency of removal, temperature, cost, and others.

This information has been sourced, reviewed and adapted from materials provided by Firwin Corporation.

For more information on this source, please visit Firwin Corporation.


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