Körapur® 925 Marine

1 of 48 products in this brand

Körapur® 925 Marine is a marine-grade, high-strength, non-sag, one-component elastic adhesive and sealant based on silane-modified polymer chemistry. It is an elastic, one-part system of polyurethane adhesive and sealant that utilizes moisture curing. It exhibits high cold resistance, high heat resistance, excellent moisture resistance, and excellent weather resistance.

Chemical FamilyPolyurethanes (PU)

Product Type1K (1 component) Adhesive, 1K (1 component) Sealant, Reactive Adhesive, Reactive Sealant

Application AreaDecking, Hulls, Marine Applications

Application MethodCartridge Dispenser, Sachet Dispenser

Compatible Substrates & SurfacesAluminum Alloys, Composites, Metal, Painted Surfaces, Steel, Wood

FeaturesExcellent Elasticity, Excellent Humidity Resistance, Excellent Moisture Resistance, Excellent Strength, Good Cold Resistance, Good Sagging Resistance, Good Weather Stability, Heat Resistance, High Elongation, Paintable

Technical Data Sheet

Enhanced TDS

Identification & Functionality

Chemical Family

Features & Benefits

Applications & Uses

Cure Method
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
Physical Properties
ValueUnitsTest Method / Conditions
Density1.4g/cm³
Cured Properties
ValueUnitsTest Method / Conditions
Skin Formation Time45.0minKö-test method 100109, Climate according to DIN 50014
Curing to Depth3.0mm/dwithin 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)50.0DIN ISO 7619-1, Shore A
Tensile Strength3.0MPaDIN EN ISO 527
Elongation at Break650.0%DIN EN ISO 527
Tear Strength11.0N/mmISO 34-1
Processing Parameters
ValueUnitsTest Method / Conditions
Processing Temperature15 - 35°C
Required Squeezing Pressure2 - 5bar
Recommended Minimum Layer Thickness2.0mm
Recommended Operating Conditions
ValueUnitsTest Method / Conditions
Service Temperature- 40 - 90°C
Short-Term Temperature Resistance (60 min)120.0°C

Regulatory & Compliance

Packaging & Availability

Regional Availability
  • North America

Storage & Handling

Storage Condition

Storage Temperature: 5°C to 25°C