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"K-FLEX is a multinational manufacturing company specialized in the production of thermal and acoustic flexible elastomeric insulation materials.

The company has production facilities and a network of subsidiaries around the globe in order to provide its products and services to customers wherever they are in the world.

Its diversified product portfolio provides innovative and sustainable solutions for many industries including residential and commercial construction, transportation, petrochemical and renewable energy.

For over 30 years, K-FLEX products have been recognized for their high standards of INNOVATION, QUALITY and PERFORMANCE that play an essential role in energy consumption control and the reduction of greenhouse gas emissions.

K-FLEX's global production infrastructure and its wide network of distribution partners grant close proximity to all customers to take advantage of customized insulation solutions."

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K-FLEX USA K-FLEX

K-FLEX® K 41-N is a unique formulation provides excellent compression set resistance for sustained performance in demanding applications.

K-FLEX® K 41-N

K-FLEX® INSUL-SHEET® is an NBR/PVC based closed cell, flexible elastomeric foam insulation. It is environmentally-friendly as it is free of CFCs, HFCs, HCFCs, PBDEs, formaldehyde and fibers. An EPA registered antimicrobial agent is incorporated into the product providing additional protection against mold, fungal and bacterial growth.

K-FLEX® INSUL-SHEET®

K-FLEX® Duct® Liner Gray is an NBR/PVC-based closed cell, flexible elastomeric foam thermal and acoustic insulation. It is environmentally friendly as it is free of CFCs, HFCs, HCFCs, PBDEs, formaldehyde and fibers. An EPA registered antimicrobial agent is incorporated into the product providing additional protection against mold, fungal and bacterial growth.

K-FLEX® DUCT® LINER GRAY

K-FLEX® K 42-N is an open cell Flexible Elastomeric Foam designed for sound absorption. It combines excellent acoustic performances and insulation characteristics.

K-FLEX® K 42-N

K-FLEX® INSUL-TUBE® is an NBR/PVC based closed cell, flexible elastomeric foam insulation. It is environmentally friendly as it is free of CFCs, HFCs, HCFCs, PBDEs, formaldehyde and fibers. An EPA-registered antimicrobial agent is incorporated into the product providing additional protection against mold, fungal and bacterial growth. It is UL GREENGUARD® Gold Certified for low VOC emissions. The product’s key physical properties are approved by Factory Mutual.

K-FLEX® INSUL-TUBE®

K-FLEX® ECO® is a halogen-free, NBR-based closed cell, flexible elastomeric foam insulation. It is environmentally-friendly as it is free of CFCs, HFCs, HCFCs, PBDEs, formaldehyde and fibers. An EPA-registered antimicrobial agent is incorporated into the product providing additional protection against mold, fungal and bacterial growth. K-FLEX® ECO® does not contain carbon black or PVC in accordance with United States Navy Environmental Department standards.

K-FLEX® ECO®

K-FLEX® K-FONIK GK ST is a smooth elastomeric sound insulation panel in various thicknesses, coupled with a high density elastomeric sheet. The product is lead-free and therefore does not represent a health risk. K-FONIK GK ST combines the features of K-FONIK GK with a layer of our elastomeric sheet. Flexible It is a elastomeric foam with high-density elastomeric material.

K-FLEX® K-FONIK GK ST

K-FLEX® K 40-E is designed for use in the Automotive industry. K-TEK K 40-E delivers uniform compression deflection performance and provides long-term resistance to ozone, weathering and heat.

K-FLEX® K 40-E

K-FLEX® PE is a polyethylene based closed cell, flexible foam insulation meeting the requirements of ASTM C1427. It is environmentally-friendly as it is free of CFCs, HFCs, HCFCs, PBDEs, formaldehyde and fibers. K-FLEX® PE contains no halogens. The product is made in K-FLEX® USA’s ISO 90001:2008-certified manufacturing facility in North Carolina. K-FLEX® PE has excellent thermal, physical, and chemical resistance properties as exhibited by its low thermal conductivity and low water absorption and water vapor permeability values.

K-FLEX® PE

K-FLEX USA

"K-FLEX is a multinational manufacturing company specialized in the production of thermal and acoustic flexible elastomeric insulation materials.

The company has production facilities and a network o

K-FLEX USA - Thermal - Acoustic - Elastomeric - Insulation

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K-FLEX K 40-E Technical Data Sheet

K-FLEX K 40-E Technical Data Sheet - K-FLEX USA

K-FLEX K 40-E Safety Data Sheet

K-FLEX K 40-E Safety Data Sheet - K-FLEX USA

K-FLEX K 40-E - K-FLEX USA - Mixtures & Blends - Foam - Knowde

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	Value	Units	Test Method / Conditions
Appearance Change (Accelerated Aging)	None	—	ASTM D1056
Cell Structure	Crushed	—	—
Compression Deflection Change (Accelerated Aging)	±30	%	ASTM D1056
Compression Resistance (25%)	max. 1	PSI	ASTM D1056
Compression Resistance (50%)	max. 1.5	PSI	ASTM D1056
Compression Set (50%)	max. 5	%	ASTM D1056
Density	2022-04-07	lb/ft3	ASTM D1056
Elongation	min. 100	%	ASTM D412 (DIE A)
Flammability	Pass	—	UL 94: HF-1, V-0, 5VA FMVSS-302 FAR 25.853
Flexibility (Accelerated Aging)	Pass	—	ASTM D1056
Ozone Resistance	Pass	—	SO 1431
Polymer	EPDM	—	—
Service Temperature	-65 - 300	°F	ASTM D1056
Tear Strength	min. 5	Lb/In	ASTM D624 (DIE C)
Tensile	min. 20	Psi	ASTM D412 (DIE A)

	THICKNESS				WIDTH		ROLL LENGTH
Size	Min (mm)	Max (mm)	Min (in)	Max (in)	Min (in)	Max (in)	Min (ft)	Max (ft)
3/4"	19.1	23	0.752	0.906	54	56	50	51
1"	25.4	30.1	1	1.185	54	56	50	51
1-1/8"	28.5	33.7	1.125	1.325	54	56	50	51

K-FLEX® K 40-E

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