Pipe Insulation

At Johns Manville, we're committed to delivering the industry’s most consistent line of pipe insulation. Our JM Micro-Lok® HP pipe insulation demonstrates how details can make all the difference during manufacturing and after the product is installed. Our automated manufacturing process yields uniformity in the fiber glass core that allows for quick, accurate cuts to accommodate fittings and pipe supports.

 

This makes fabrication easier and contributes to contractor productivity during installation. JM developed a proprietary auto-jacketer that ensures consistency during production for a tighter jacket with a cleaner finished appearance. It also results in superior jacket adhesion and self-sealing lap alignment. In a changing industry, we retain our unwavering focus on details and performance to help contractors be more productive on the job and occupants more comfortable in their environment.

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Pre-formed fiberglass pipe insulation with an ASJ jacket. In-line manufacturing process (service temp: 850°F)

Johns Manville Micro-Lok® HP fiberglass pipe insulation is manufactured using the latest technology and our unique in-line manufacturing process. This process results in a uniform fiberglass core that delivers consistent performance during fabrication and installation. In addition, our proprietary auto-jacketer ensures consistency during production and installation resulting in a tighter jacket with a cleaner finished appearance. Micro-Lok HP delivers thermal performance you can count on, while meeting all industry performance requirements. This assures the building owner, mechanical engineer and contractor that Micro-Lok HP will deliver the performance you’ve come to expect from JM products throughout the life of the mechanical system.

Service Temp (Nominal): 850° F
Thermal Conductivity (k): 75° F (24° C); 0.23
Recycle Content:
 33% (post consumer)
Greenguard: Gold

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Available Documents

Pre-formed fiberglass pipe insulation without a jacket. In-line manufacturing process (service temp: 850°F)

Johns Manville Micro-Lok® HP plain fiberglass pipe insulation is manufactured using the latest technology and our unique in-line manufacturing process and is available without a vapor retarder. Our in-line manufacturing process results in a uniform fiberglass core that delivers consistent performance during fabrication and installation. Micro-Lok HP delivers thermal performance you can count on, while meeting all industry performance requirements. This assures the building owner, mechanical engineer and contractor that Micro-Lok HP will deliver the performance you’ve come to expect from JM products throughout the life of the mechanical system.

Service Temp (Nominal): 850° F
Thermal Conductivity (k): 75° F (24° C); 0.23
Recycle Content: 41% (post consumer)

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Available Documents

Pre-formed fiberglass pipe insulation with a polycoated jacket. In-line manufacturing process (service temp: 850°F)

Micro-Lok®​​​​​​​ HP Ultra is a specialized, premium performance fiberglass pipe insulation. As part of the Micro-Lok HP product line, Ultra has the most consistent fiberglass core available in the market. We have coupled this with a factory-applied, polypropylene-coated, ASJ vapor retarder jacket with 100 Psi puncture-resistance. This design allows the product to be used in an environment of intermittent or temporary exposure to transient moisture or conditions that are similar to those in an open construction site. The SSL closure system has been designed to adhere securely to the polypropylene-coated jacket. It can be applied at ambient temperatures starting at 20°F and above, and will remain intact even in high temperatures and humidity. This assures the building owner, mechanical engineer and contractor that Micro-Lok HP Ultra will deliver the performance you’ve come to expect from JM products throughout the life of the mechanical system.

Service Temp (Nominal): 850°F
Thermal Conductivity 75°F (24°C): 0.23
Recycled Content: 33% (post-consumer)
Greenguard: Gold

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Available Documents

Pre-formed fiberglass pipe insulation with an ASJ jacket (service temp: 850°F)

Johns Manville Micro-Lok® has been a trusted mechanical insulation solution for mechanical engineers, contractors and building owners for more than 40 years. Our flame-attenuated fiberization process gives Micro-Lok excellent thermal properties and a core that provides ease of fabrication for the contractor.

Service Temp (Nominal): 850° F
Thermal Conductivity (k): 75° F (24° C); 0.23
Greenguard: Gold (ASJ)

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Available Documents