FyreWrap® Passive Fire Protection | Alkegen® (formerly Unifrax®)
FyreWrap® by Alkegen® (formerly Unifrax®) — passive fire protection made from biosoluble Insulfrax® fibre (AES, 1200 °C) for HVAC, marine, cable trays and dryers.
FyreWrap® by Alkegen® (formerly Unifrax®) is a passive fire protection wrap made from biosoluble Insulfrax® fibre (alkaline earth silicate, AES). Five variants cover HVAC air distribution ducts, marine structures, cable trays, dryer exhausts and plenum spaces. The fibre is binder-free and exonerated from carcinogen classification per Note Q of EU Regulation EC/1272/2008 (CLP).
- Variants
- FyreWrap® Elite® 1.5 | FyreWrap® Marine | FyreWrap® DPS | FyreWrap® Cable | FyreWrap® 0.5 Plenum
- Approvals
- UL | FM Global | IMO FTP Code | MED | U.S. Coast Guard
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Fire Protection
1-hour and 2-hour fire ratings. Tested to UL, FM Global and IMO FTP Code standards.
Biosoluble
Insulfrax® AES fibre — exonerated from carcinogen classification per Note Q, EU Regulation EC/1272/2008 (CLP).
Versatile
Five variants for HVAC, marine, cable trays, dryers and plenums — one fibre technology.
PRODUCT TYPE
FyreWrap® fire protection wraps are needled lightweight blankets made from biosoluble Insulfrax® fibre (CaO-MgO-SiO₂, alkaline earth silicate). They provide passive fire protection for HVAC ducts, marine structures, cable trays and dryer exhausts. The wraps are mechanically needled — no binder. No smoke or fumes are generated when exposed to heat. Classification temperature is 1200 °C, maximum continuous use temperature is 1100 °C.
MATERIAL
Insulfrax® alkaline earth silicate fibre (AES) consists of a mix of amorphous fibres based on silicon dioxide (SiO₂ 61–67%), calcium oxide (CaO 27–33%) and magnesium oxide (MgO 2.5–6.5%). The fibre is biosoluble and exonerated from carcinogen classification per Note Q of EU Regulation EC/1272/2008 (CLP). Melting point is 1260 °C (2300 °F).
ALKEGEN® (formerly Unifrax®)
Alkegen® (formerly Unifrax®) is one of the world’s leading manufacturers of high-performance specialty fibres and inorganic materials for industry, automotive and fire protection. The company was rebranded from Unifrax® to Alkegen® on January 24, 2022 and is headquartered in Dallas, Texas. The FyreWrap® product line uses biosoluble Insulfrax® fibre technology, combining passive fire protection with health safety.
Product Variants
FyreWrap® Elite® 1.5
Passive fire protection for HVAC air distribution ducts and commercial kitchen grease ducts. 1-hour and 2-hour fire ratings. 38 mm thick, 96 kg/m³, R-value 7.2. Single layer for air distribution, double layer for grease ducts.
FyreWrap® Marine
Passive fire protection for ships, offshore platforms and FPSOs. Fire divisions A-15 to H-120 per IMO FTP Code. Approved per MED (Marine Equipment Directive) and U.S. Coast Guard.
FyreWrap® DPS
Fire protection for dryer exhausts. 12.7 mm thick, 1-hour fire rating (UL listed). Compact solution for commercial and industrial dryer installations.
FyreWrap® Cable
Fire protection for cable trays and conduits. FM Global approved. Protects critical cabling in buildings and industrial facilities.
FyreWrap® 0.5 Plenum
Insulation for plenum spaces. 12.7 mm thick. Suitable for insulation in drop ceilings and air handling spaces.
TECHNICAL DETAILS
Chemical Analysis (Insulfrax®)
SiO₂: 61.0 – 67.0 % CaO: 27.0 – 33.0 % MgO: 2.5 – 6.5 % Al₂O₃: < 1.0 % Physical Properties
Property Value Colour White Classification temperature 1200 °C Max. continuous use temperature 1100 °C Melting point 1260 °C (2300 °F) FyreWrap® Elite® 1.5 — Key Data
Property Value Thickness 38 mm (1.5 in) Density 96 kg/m³ (6 lb/ft³) Thermal resistance (R-Value) 7.2 Fire rating (1 layer) 1 hour Fire rating (2 layers) 2 hours FyreWrap® DPS — Key Data
Property Value Thickness 12.7 mm (0.5 in) Fire rating 1 hour (UL) CHARACTERISTICS
FyreWrap® fire protection wraps by Alkegen® (formerly Unifrax®) combine passive fire protection with health safety. The wraps are made from biosoluble Insulfrax® fibre (alkaline earth silicate, AES) and are mechanically needled — no binder, no smoke or fumes when exposed to heat. FyreWrap® Elite® 1.5 achieves a 1-hour fire rating as a single layer for HVAC air distribution ducts, and a 2-hour fire rating as a double layer for grease ducts. FyreWrap® Marine meets fire divisions A-15 to H-120 per IMO FTP Code with MED and USCG approval.
APPLICATIONS
- HVAC air distribution and grease ducts
- Shipbuilding, offshore platforms and FPSOs
- Cable trays and conduits
- Dryer exhausts (commercial/industrial)
- Plenum insulation in drop ceilings
- Fire compartmentation in buildings
Frequently Asked Questions (FAQ)
What is FyreWrap® and what is it used for?
FyreWrap® by Alkegen® (formerly Unifrax®) is a passive fire protection wrap made from biosoluble Insulfrax® fibre (alkaline earth silicate, AES). It protects HVAC ducts, marine structures, cable trays and dryer exhausts.
Is FyreWrap® safe for health?
Yes. FyreWrap® is made from biosoluble Insulfrax® fibres that are exonerated from carcinogen classification per Note Q of EU Regulation EC/1272/2008 (CLP). The fibres contain no binder and produce no smoke or fumes.
What fire ratings does FyreWrap® Elite® achieve?
FyreWrap® Elite® 1.5 achieves 1-hour and 2-hour fire resistance ratings. A single layer is sufficient for air distribution ducts, while commercial kitchen grease ducts require a double layer.
What approvals does FyreWrap® Marine have?
FyreWrap® Marine meets fire divisions A-15 to H-120 per IMO FTP Code. Approved per MED (Marine Equipment Directive) and U.S. Coast Guard.
How does FyreWrap® differ from Fiberfrax® Durablanket®?
FyreWrap® is a passive fire protection wrap made from biosoluble Insulfrax® fibre (AES, 1200 °C). Fiberfrax® Durablanket® is a high-temperature insulation blanket made from ceramic fibre (ASW/RCF, 1250 °C). Different fibre technologies for different application areas.
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Since 2001, KS Kneissl & Senn Technologie GmbH
has been producing insulation materials and seals for a wide range of applications up to a temperature range of 1600 °C. A diverse range of machinery (CNC 5-axis milling, plotting, punching, sewing, water jet cutting, vacuum forming, etc.) enables us to shape a wide variety of materials for you. The main materials include: glass fibers, aramid fibers, mineral fibers, biosoluble fibers, ceramic fibers, silicate fibers, vermiculite, calcium silicate, microporous materials, elastomers (rubber, silicone, silicone foam, etc.), etc.
The company has been ISO9001 certified since 2009, currently in accordance with the 2015 revision of the standard.