Körapur® 925 Marine

Identification & Functionality

Chemical Family

Polyurethanes (PU)

Product Type

1K (1 component) Adhesive,

1K (1 component) Sealant,

Reactive Adhesive,

Reactive Sealant

Technologies

Adhesives & Sealants

Product Families

Adhesives & Sealants — Bonding Technology

1K Liquid Reactive Adhesives

Adhesives & Sealants — Sealing Technology

Reactive Sealants

Features & Benefits

Ready-to-Use Product Features

Excellent Elasticity,

Excellent Humidity Resistance,

Excellent Moisture Resistance,

Excellent Strength,

Good Cold Resistance,

Good Sagging Resistance,

Good Weather Stability,

Heat Resistance,

High Elongation,

Paintable

Applications & Uses

Markets

Automotive & Transportation

Applications

Automotive & Transportation — Transportation

Marine

Application Area

Decking,

Hulls,

Marine Applications

Application Method

Cartridge Dispenser,

Sachet Dispenser

Compatible Substrates & Surfaces

Aluminum Alloys,

Composites,

Metal,

Painted Surfaces,

Steel,

Wood

Cure Method

Moisture Cure

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.

Properties

Physical Form

Paste

Physical Properties

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

Cured Properties

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

Processing Parameters

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

Recommended Operating Conditions

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

Regulatory & Compliance

Certifications & Compliance

International Maritime Organization (IMO) Compliant

Packaging & Availability

Regional Availability

• North America

Storage & Handling

Storage Condition

Storage Temperature: 5°C to 25°C