Körapur® 940 Marine

1 of 39 products in this brand
Körapur® 940 Marine is a one-component, moisture-curing adhesive and sealant that is elastic and suitable for use in the marine and boat industry. The product exhibits good adhesion to primed and painted metals, aluminum, wood, duroplastics, GRP, and gel coat. It also offers good resistance to humidity and weathering.

Chemical Family: Polyurethanes (PU)

Product Type: 1K (1 component) Adhesive, 1K (1 component) Sealant, Reactive Adhesive, Reactive Sealant

Application Area: Decking, Hulls, Marine Applications

Application Method: Gun

Compatible Substrates & Surfaces: Aluminum, Metal, Painted Surfaces, Plastics, Wood

Features: Excellent Elasticity, Excellent Humidity Resistance, Excellent Strength, Excellent Substrate Adhesion, Fast Curing, Good Sagging Resistance, Good Weather Stability, High Elongation, Temperature Resistance

Technical Data Sheet
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Enhanced TDS

Identification & Functionality

Features & Benefits

Applications & Uses

Application Area
Application Method
Compatible Substrates & Surfaces
Cure Method

Processing temperature: 5°C to 35°C


  • The surfaces to be bonded must be clean, dry and free from dust and grease. For cleaning we recommend Körasolv PU. In the case of powder coated substrates, Körasolv WL should be used.
  • To increase bond strength of non-porous substrates such as glass, glass-fiber reinforced plastics, gel coat, aluminum, stainless steel, etc. we recommend the use of Körabond HG 81. For porous substrates such as wood, Körabond HG 74 E is recommended. For certain plastics such as ABS or PVC we suggest the use of Körabond HG 77.


The thickness of the layer depends on the expected mechanical movement. Join the material to be bonded within 45 minutes after application. Due to the low initial tack, we re commend mechanical fixing until a complete cure is obtained. The cure time is dependent on temperature, humidity and the dimensions of the joint. The absolut moisture content depends on the air temperature. Therefore, we recommend the use of our hardener Köracur 110. Körapur 940 Marine will cure unaffected by water when using hardener Köracur 110.

Körapur® 940 Marine - Processing


  • Körasolv PU
  • Clean tools immediately after use.
  • Once cured material can only be removed mechanically.


Technical Data
ValueUnitsTest Method / Conditions
Skin Formation Time70 - 90minDIN 50 014, NC 23/50-2
Curing Time (on the first day)3.0mmDIN 50 014, NC 23/50-2
Change in Volume7.0%DIN 52 451
Hardness55.0-DIN 53 505, Shore A
Elongation at Break400.0%DIN 53 504
Tensile Strength4.0N/mm²DIN 53 504
Lap Shear Strength (at a layer thickness of 2 mm)3.0N/mm²DIN 53283
Tear Resistance7.0N/mmDIN 53 515

Regulatory & Compliance

Safety & Health


When using Körapur 940 Marine, avoid direct skin contact of the uncured material. Wear suitable personal protective equipment (chemical resistant gloves/clothing).

Packaging & Availability

Packaging Type
Regional Availability
  • North America
Packaging Information
  • 230 kg Drums
  • 600 ml Sachets (carton a 12 pcs.)
  • 310 ml Cartridges (carton a 12 pcs.)

Storage & Handling

Shelf Life
6 Months, 9 Months (Cartridges), 9 Months (Sachets)
Storage Condition

Do not store at temperatures above 25°C for longer periods of time.