Unifrax

Unifrax is a U.S.-based industrial materials brand specializing in high-temperature insulation, specialty fibers, and engineered thermal management products. The company traces its roots to the late 19th century and grew through a series of acquisitions and product innovations in ceramic fiber, fiberglass, and microporous insulation. Its products are used in industrial furnaces, automotive emission control, fire protection, aerospace, and energy storage applications. Unifrax operates manufacturing facilities in North America, Europe, and Asia, serving OEMs and industrial customers worldwide. In 2022, Unifrax merged with Lydall to form Alkegen, a combined specialty materials platform owned by Clearlake Capital Group. The Unifrax brand continues to be used for its heritage insulation and fiber product lines within the Alkegen portfolio. The company is known for brands such as Fiberfrax ceramic fiber, Insulfrax, Isofrax, and Flexfrax, as well as its low-biopersistence fiber technologies. Unifrax's market positioning emphasizes high-performance, energy-efficient, and safety-critical materials for extreme environments.

Unifrax has a long history in the specialty insulation industry, with origins dating back to the late 19th century. The company was originally known as The Carborundum Company's fiber division and later became a standalone entity. Through the 20th century, Unifrax developed and commercialized ceramic fiber products under the Fiberfrax brand, which became widely used in industrial furnace linings and high-temperature applications. The company expanded its product portfolio to include fiberglass, microporous insulation, and specialty fibers for automotive and aerospace markets. In the 2000s and 2010s, Unifrax grew through acquisitions, including the purchase of the automotive catalyst substrate business from Corning and the acquisition of Lydall's thermal/acoustical segment. In 2022, Unifrax and Lydall merged to form Alkegen, a new company focused on specialty materials for sustainability and advanced applications. The Unifrax brand remains a key part of Alkegen's product portfolio, particularly for high-temperature insulation and fiber products.

• 2022

  Unifrax merged with Lydall to form Alkegen.

• 1891

  Company origins trace back to the late 19th century as part of The Carborundum Company.

High-performance, safety-critical insulation and fiber materials for extreme environments.

• Fiberfrax ceramic fiber

  High-temperature ceramic fiber insulation for industrial applications.

• Insulfrax fiber

  Specialty fiber for thermal and acoustic insulation.

• Isofrax fiber

  Low-biopersistence ceramic fiber for high-temperature insulation.

• Flexfrax fiber

  Flexible fiber products for thermal management.

1. 1Unifrax official websiteunifrax.com
2. 2Alkegen websitealkegen.com
3. 3Clearlake Capital持有的Unifrax公司将收购中国境内东响玻璃制品公司prnasia.com
4. 4Unifrax Announces Pricing of Notes Offeringprnewswire.com
5. 5Unifrax completes Lydall acquisitioninnovationintextiles.com