FERMAPOR K31 - Polyurethane Foam Gasket Systems

Two-Component, Room Temperature Cross-linking Polyurethane Foam Gaskets for Sealing in the FIPFG Process

Tailor-Made Chemistry for Growing Requirements

FERMAPOR K31 is the two-component polyurethane system to produce soft elastic foam gaskets, which are foamed directly onto the part using FIPFG technology (Formed-In-Place-Foam-Gasket). The foam is then directly applied onto the part using mixing and dispensing systems and FIPFG sealing technology.

Chemical Constituents

The foam gasket system consists of a polyurethane basic resin (A-component) and an MDI isocyanate hardener (B-component), which are mixed with each other in a predetermined mixing ratio. When foaming up on the part, a soft foam gasket is formed after a few minutes.

After reaction between the material components, the foam gasket is tack-free and ready to be installed into mating components. According to experience, the sealing function achieves a compression of approx. 30 – 60% of the cured foam gasket. The flow behavior, reactivity, degree of hardness, and color of the material formulations can be adjusted as required.

Henkel draws on more than 1,000 application specific formulations of the FERMAPOR K31 product family.

Broad Range of Properties

Mixed-cell FERMAPOR K31 polyurethane foam seals have a broad profile of properties, combining the positive sealing qualities of closed-cell systems, e.g., low water absorption with low construction forces of open-cell systems. Polyurethane foam seals are mainly used in a temperature range from -40 °C to about +80 °C.

Numerous Product Properties in the FERMAPOR K31 Family

Depending on customer requirements, FERMAPOR K31 can be customized according to various specifications. For this, many different FERMAPOR K31 recipes are available.

Physical and Chemical Properties
Property	FERMAPOR K31
Appearance	Black or grey, other colors on request
Hardness	From 15 Shore 00 to 40 Shore A achievable
Compression load deflection	5 kPa to 200 kPa (at 25 % compression)
Density	From 0.1 g/cm³ to 0.6 g/cm³
Temperature resistance	From – 40 °C to + 80 °C (temporary up to + 160 °C)
Tensile strength	Up to 2 MPa [N/cm²]
Elongation at break	Up to 400 %
Resetting ability	Greater than 97 % (depending on test conditions)
Water absorption	From 3,5 %, hydrophobic versions available, depending on test conditions
Flame retardancy	Up to UL-94 HF-1 possible
	E.g. sliding properties, low fogging, suitable for food packaging, protection class up to IP68 or NEMA 12 (achievable with suitable component design)

FERMAPOR K31 FAST-CURE

FERMAPOR K31 LOW-EMISSION

FERMAPOR K31 ANTIMICROBIAL

FERMAPOR K31 FLAME PROTECTION

FERMAPOR K31 FOR FOOD CONTACT

Technology

Reliability Through FIPFG Dispensing Technology

The FERMAPOR K31 sealing foams can be efficiently and accurately applied on to parts from the most varied industry sectors using the FIPFG (Formed-In-Place Foam Gasket) technology. Depending on the viscosity needed, these sealing foams are either freely applied as a liquid material into a groove or as a highly viscous material to a 2D or 3D part surface.

Only with the exact interplay of the most variable set-up parameters of the mixing and dosing machine and the selected FERMAPOR K31 foam seal enables a secure seal of diverse industrial components against moisture, dust and other environmental influences.

FERMAPOR K31 – the Reaction Process

FERMAPOR K31 sealing foams consist of a liquid to pasty A-component (polyol) and a hardener, the B-component (MDI isocyanate). The chemical reaction of FERMAPOR K31 sealing foams is initiated by mixing the A- and B-components. The applied compound foams up to a uniform gasket under room temperature conditions.

FERMAPOR K31 – the Foaming Process
Pot life	The time span from the mixing of the A- and B-components to the beginning of the foaming time (approx. 15 – 60 seconds). It is also referred to a processability time or service life.
Foaming-up time	The time span in which the FERMAPOR K31 foam system expands to form a seal body (after approx. 30 – 180 seconds).
Tack-free time:	The time from which the sealant surface of FERMAPOR K31 foam systems can be touched without causing damage (after approx. 2 – 20 minutes).
Assembly time:	The chemical reaction has progressed so far that the FERMAPOR K31 foam systems can bear loads, or the foamed components can be assembled (after approx. 20 minutes – 12 hours).

Application Diversity

THE FERMAPOR K31 RANGE SELECTION

The FERMAPOR K31 portfolio offers effective seal protection for a wide range of applications and requirements. In the table below, you will find a selection of foam sealing systems for various industries - from lighting, switch cabinets, and the automotive industry to filters, packaging, and household appliances.

FERMAPOR K31 A-Component	Application area	Viscosity mPas	Hardness Shore 00	Density g/cm3	Other properties
A-9675-5-VP	Lighting	1,300 - 1,900	20 - 50	0,13 - 0,24	UL-50 listed, suitable for moisture-proof luminaires, soft
A-9675-2-VP	Lighting	1,000 - 2,500	35 - 75	0,25 - 0,50	UL-50 listed, suitable for moisture-proof luminaires
A-3505-1	Lighting	2,000 - 3,800	30 - 40	0,22 - 0,28	Product for moisture-proof luminaires, especially self-levelling
A-4525-1-B-UL	Enclosures	25,000 - 33,000	40 - 50	018 - 0,24	UL-50 listed and good adhesion on lacquer
A-9021-2-VP1	Enclosures	37,000 - 52,000	37 - 52	0,25 - 0,35	UL-94 HBF and UL-50 listed
A-45C2-1-UL-FR	Enclosures	120,000 - 150,000	43 - 53	0,23 - 0,29	UL-94 HF-1 and UL-50 listed
A-6045-3-B-UL	Enclosures	60,000 - 70,000	50 - 65	0,29 - 0,35	UL-50 listed, hydrophobic, very good resetting ability (DVR), good adhesion on lacquer
A-4545-1	Enclosures	45,000 - 55,000	40 - 50	0,27 - 0,36	High mechanic strength, low friction, optimized against shear stress
A-4530-3-B	Enclosures	33,000 - 40,000	32 - 42	0,19 - 0,23	UL-50 listed, very good resetting ability (DVR), good adhesion on powder coating, fast assembly
A-6060-1-B	Enclosures	55,000 - 65,000	50 - 60	0,23 - 0,29	UL-50 listed, hydrophobic, very good resetting ability (DVR), good adhesion on powder coating, fast assembly
A-9025-2-VP2	Enclosures	35,000 - 50,000	28 - 42	0,15 - 0,30	Extremely soft, UL-50 listed, good adhesion on lacquer
A-6045-2-B-MX	Filters	50,000 - 65,000	50 - 60	0,24 - 0,30	Microbial inert adjustable, suitable for ventilation systems
A-5065-1-G-MX	Filters	60,000 - 70,000	45 - 55	0,21 - 0,29	Microbial inert adjustable
A-9308-5-VP5-F	Filters	130,000 - 200,000	38 - 62	0,18 - 0,27	For 3D applications, microbial inert adjustable, suitable for ventilation systems
A.3030-1-MX	Filters	28,000 - 38,000	20 - 30	0,17 - 0,23	Extremely soft, microbial inert adjustable, suitable for ventilation systems
A-9808	Filters	1,000 - 2,000	35-65	0,17 - 0,35	For very small groove applications (2 mm)
A-6501-3	Automotive	900 - 1,500	56 - 66	0,34 - 0,40	High tightness, hydrophobic, very good resetting ability (DVR)
A-3565-2	Automotive	60,000 - 75,000	30 - 45	0,13 - 0,16	Extremely soft, low assembly forces
A-9308-5-VP5	Automotive	120,000 - 160,000	35 - 55	0,18 - 0,40	Very high mechanic strength, hydrophobic, for 3D applications
A-7060-5-B	Automotive	55,000 - 70,000	55 - 65	0,30 - 0,36	Sealing of E-Mobility batteries, fast assembly
A-5555-1	Automotive	50,000 - 65,000	50 - 60	0,24 - 0,30	High tightness, hydrophobic, very good resetting ability (DVR)
A-9199-29-VP3	Automotive	45,000 - 60,000	20 - 45	0,17 - 0,30	High tightness, low assembly forces and high mechanic strength
A-9308-5-VP4	Automotive	90,000 - 150,000	25 - 50	0,15 - 0,27	Very high mechanic strength, for 3D applications
A-9675-11	Automotive	1,000 - 1,500	28 - 48	0,16 - 0,22	Hydrophobic, suitable for 2D groove applications, low dens
A-45C0-1-G-LE	Automotive	90,000 - 130,000	40-50	0,18 - 0,24	Low emissions, meets Daimler DBL5452 and BMW TL 8 350 151_6 design 11
A-6501-4-N	Packaging	1,000 - 1,700	62 - 72	0,40 - 0,48	Very elastic, for high tightness requirements, good resetting ability (DVR)
A-9843-8-VP3H	Packaging	9,000 - 16,000	60 - 75	0,31 - 0,37	Good price-performance ratio, good resetting ability (DVR)
A-9762-1	Packaging	6,000 - 9,000	65 - 75	0,33 - 0,40	Approval for food packaging (EU)
A-6505-1-N-FD	Packaging	5,000 - 7,500	73 - 83	0,24 - 0,30	Approval for food packaging (EU and FDA)
A-9370-VP5	Appliances	58,000 - 80,000	10 - 30	0,18 - 0,26	Hyper soft for ceramic stovetops

Good Reasons

10 Good Reasons for FERMAPOR K31 Polyurethane Foam Seal Systems

… is ideally suited for sealing industrial components in practically all shapes and geometries.
… often achieves particularly good adhesion onto the component through the chemical reaction of the two material components on the substrate.
… has excellent long-term behavior and shows almost 100% resetting ability even after years of continuous use.
… is tack-free at room temperature in 2 – 20 minutes. A furnace can significantly shorten the reaction time, but it is not always necessary.
… offers special quick-reacting fast-cure recipes that are tack-free within 120 seconds for higher production cycle times.
… easily compensates for large component tolerances.
… forms a cross-linked structure after the reaction, which is extremely resistant to influences
such as moisture, dust, and temperature.
… produces foam gaskets with extreme softness.
… is processed with mixing and dosing systems for two components and can be easily and quickly changed over to other components, that need to be sealed at any time.
… can be processed profitably even in small production runs.

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FERMAPOR K31 - Polyurethane Foam Gasket Systems

Tailor-Made Chemistry for Growing Requirements

Chemical Constituents

Broad Range of Properties

Numerous Product Properties in the FERMAPOR K31 Family

Physical and Chemical Properties

Technology

Reliability Through FIPFG Dispensing Technology

FERMAPOR K31 – the Reaction Process

FERMAPOR K31 – the Foaming Process

Application Diversity

THE FERMAPOR K31 RANGE SELECTION

Good Reasons

10 Good Reasons for FERMAPOR K31 Polyurethane Foam Seal Systems

Contact Us

Please fill out the form below and we'll respond shortly