Körapur® 925 Marine

Identification

Chemical Family

Polyurethanes (PU)

GBU

EA

RTU Product Type

1K (1 component) Sealant,

1K (1 component) Adhesive,

Reactive Sealant,

Reactive Adhesive

Categories

Markets → Automotive & Transportation → Applications → Transportation → Marine

Technologies → Adhesives & Sealants → Product Families → Bonding Technology → 1K Liquid Reactive Adhesives

Technologies → Adhesives & Sealants → Product Families → Sealing Technology → Reactive Sealants

Application Information

Cure Method

Moisture Cure

Applications

Application Area

Marine Applications,

Decking,

Hulls

Application Method

Cartridge Dispenser,

Sachet Dispenser

Compatible Substrates & Surfaces

Metal,

Plastics,

Wood,

Composites,

Steel,

Galvanized Steel,

Coated Surfaces,

Painted Surfaces,

Aluminum Alloys,

Alloy Steel

Applications & Uses

Processing

Processing	Consistency	Non-sagging
		Pasty
	Surface requirements	Dry
		Clean
		free of grease
		free of dust
	Surface Cleaning	Körasolv PU
		Körasolv WL
	Adhesion Promoter (absorbing surface)	Körabond HG 92
	Adhesion Promoter (non absorbing surface)	Körabond HG 81
	Product Overpaintability	after skin formation (depending on paint)
Cleaning	Cleaner for Tools	Körasolv PU
Hints	Resistance against UV Radiation	Not suitable for glass bonding with permanent UV radiation to the bonding area.
	Stress Cracking	Preliminary tests must be carried out on plastics with a tendency to stress cracking. (PMMA, ABS, PC or PS)
	Compatibility with Polystyrene Foams	Not suitable for bonding polystyrene foams.
	Avoid Contact with Isocyanate Reactive Substances	Avoid direct contact with isocyanate reactive substances, especially alcohol such as spirit, dilutions, cleaning compounds and fission products of silane-modified polymers or silicones until the adhesive has attained full cure. This will prevent the adhesive from curing properly.

• Preparation: For some substrates the use of mechanical pretreatment and/or cleaner or primer is necessary to achieve good adhesion.
• Processing: Low temperatures can cause a temporary increase in viscosity resulting in reduced extrusion and slower curing rates.
• Cleaning: Clean tools immediately after use. Once cured, the material can only be removed mechanically.
• Dimensioning: The required thickness of the adhesive layer depends on the expected maximum strength and joint movement. We recommend a minimum layer thickness of 2 mm.

Features

Ready-to-Use Product Features

Cold Resistance,

Excellent Elasticity,

Excellent Humidity Resistance,

Excellent Moisture Resistance,

Excellent Strength,

Good Sagging Resistance,

Good Weather Stability,

Heat Resistance,

High Elongation,

Paintable,

Good Cold Resistance,

Weather Resistance

Features & Benefits

Product Features

• Excellent moisture resistance
• Excellent weather resistance
• High cold resistance
• High heat resistance

Packaging & Availability

Regional Availability

• North America

Physical Properties

Physical Form

Paste

Properties

Density:

1400 kg/m³

Specific Gravity:

1.4

Strain at Break:

650 %

Tear Strength:

11 kN/m

Tensile Strength:

3 MPa

Cured Properties

	Value	Units	Test Method / Conditions
Change in Volume	-3.0	%	DIN EN ISO 10563
Curing to Depth	3.0	mm/d	within first 24 h; Climate according to DIN 50014
Elongation at Break	650.0	%	DIN EN ISO 527
Hardness (after 28d, thickness of specimen = 6 mm)	50.0	-	DIN ISO 7619-1, Shore A
Skin Formation Time	45.0	min	Kö-test method 100109, Climate according to DIN 50014
Tear Strength	11.0	N/mm	ISO 34-1
Tensile Strength	3.0	MPa	DIN EN ISO 527

Recommended Operating Conditions

	Value	Units	Test Method / Conditions
Service Temperature	- 40 - 90	°C	-
Short-Term Temperature Resistance (60 min)	120.0	°C	-

Physical Properties

	Value	Units	Test Method / Conditions
Density	1.4	g/cm³	-

Processing Parameters

	Value	Units	Test Method / Conditions
Processing Temperature	15 - 35	°C	-
Recommended Minimum Layer Thickness	2.0	mm	-
Required Squeezing Pressure	2 - 5	bar	-

Typical Properties

	Value	Units	Test Method / Conditions
Storage Temperature	5 - 25	°C	-

Regulatory & Compliance

Certifications & Compliance

International Maritime Organization (IMO) Compliant

Storage & Handling

Storage Condition

Storage Temperature: 5°C to 25°C, Körapur® 925 Marine should be used within the shelf life specified on the packaging. The storage stability applies to material stored under appropriate conditions only (original unopened containers, recommended storage temperature).

Technical Details & Test Data

Processing Information

Suitable Substrates	Various galvanized steels
	Various aluminium alloys
	Various steel alloys
	Duroplastics
	Wood
	Coated surfaces
Consistency	Pasty
	Non-sagging
Surface Requirements	Dry
	Clean
	Free of grease
Surface Cleaning	Körasolv PU
	Körasolv® WL
Adhesion Promoter (absorbing surface)	Körabond® HG 92
Adhesion Promoter (non absorbing surface)	Körabond® HG 81
Application Equipment	Cartridge dispenser Sachet dispenser
	Dispensing system
Product Overpaintability	After skin formation (depending on paint)