Johns Manville has long been recognized as the leading supplier of glass microfibers for the manufacturers of specialty glass papers and AGM battery separators. JM offers a wide range of fiber diameters (0.2 microns to 5.50 microns) to meet most customer requirements.

Micro-Strand™ is the most widely used fine diameter glass in the world. Our microglass fibers have repeatedly been shown to provide customers with fine diameters combined with strength, consistency, and purity in their applications. ASHRAE, HEPA, and ULPA filters are manufactured from Micro-Strand glass fiber due to its fine diameter fibers and outstanding fiber density. For battery applications, Micro-Strand offers extraordinary chemical resistance with excellent electrolyte suspension.

No other micro fiberglass has been more thoroughly tested for both performance and safety. This is important as the many ranges of end use applications which include FDA, pharmaceutical and electronic cleanrooms, and in automotive applications to improve air, oil, and hydraulic filtration.

If you are looking for examples of Johns Manville's technical capabilities, look no further than our Q-Fiber. First developed for use in manufacturing the tile sheathing for the U.S. Space Shuttle, Q-Fiber has extremely high thermal capabilities combined with ultra-light weight making it ideal for extreme conditions.