H.B. Fuller 2240

H.B. Fuller 2240 is a high-viscosity, rubber-toughened ethyl cyanoacrylate adhesive. It provides superior shock and thermal resistance when bonding rubbers, metals, and plastics in harsh environments and displays excellent strength and flexibility on a variety of substrates. H.B. Fuller 2240 is tested to ISO 10993-5 for biocompatibility, making it suitable for use in medical applications.

Product Type1K (1 component) Adhesive

Application AreaMedical Applications, Medical Devices

Compatible Substrates & SurfacesElastomers & Rubbers, Metal, Plastics, Polycarbonate (PC), Polyethylene Terephthalate Glycol (PET-G), Polyvinyl Chloride (PVC)

Chemical FamilyCyanoacrylates

FeaturesFast Setting, High Flexibility, High Impact Performance, High Strength, High Viscosity, Medium Viscosity, Shock Resistant, Thermal Resistance, Vibration Resistance

Technical Data Sheet

Enhanced TDS

Identification & Functionality

Chemical Family

Features & Benefits

Applications & Uses

Cure Method
General Instructions

Surfaces to be bonded should be clean and dry. Dispense a drop or drops to one surface only. Apply only enough to leave a thin film layer after compression. Press parts together and hold firmly for a few seconds. Good contact is essential. An adequate bond develops in less that one minute and maximum strength is attained in 24 hours. Wipe off excess adhesive from the top of the container and recap. products if left uncapped may deteriorate by contamination from moisture in the air. Because products cure by polymerization, whitening may appear on the surface of the container or the bonded materials. This will not affect adhesive performance.


Physical Form
Technical Data
ValueUnitsTest Method / Conditions
Specific Gravity1.06
Cured Properties
ValueUnitsTest Method / Conditions
Service Temperature- 55 - 140°C
Full Cure Time24.0h
Cure AppearanceClear
Uncured Properties
ValueUnitsTest Method / Conditions
Flash Point85.0°C
Set Time (Ethylene Propylene Diene Monomer)7 - 13s
Set Time (Steel)30 - 90s
Set Time (Acrylonitrile Butadiene Styrene)7 - 13s
Rheological Properties
ValueUnitsTest Method / Conditions
Viscosity2000 - 3000cP

Mil-A-46050C, Type II Class III, A-A-3097, Type II Class 3

Technical Details & Test Data

Curing Performance

Ambient surface moisture initiates the curing process. Handling strength is reached in a short time, and will vary based on environmental conditions, bond line gap, and other factors. Product will continue to cure for at least 24 hours before full strength and solvent resistance is developed.

Time Until Full Cure (% of RT strength)

H.B. Fuller 2240 - Time Until Full Cure (% of Rt Strength)

Performance Range by Substrate (N/mm²)

H.B. Fuller 2240 - Performance Range By Substrate (N/Mm²)

Heat Aging (aged at temperature indicated and tested at 22°C)

H.B. Fuller 2240 - Heat Aging (Aged At Temperature Indicated And Tested At 22°C)

Hot Strength (%RT strength, tested at temperature)

H.B. Fuller 2240 - Hot Strength (%Rt Strength, Tested At Temperature)

Performance of Cured Adhesive
Substrate N/mm² PSI
Steel 17.2 to 35.9 2500 to 5200
Rubber* 4.9 to 15.2 710 to 2200
AL 18.0 to 21.5 2610 to 3115
PC** 17.8 to 26.0 2585 to 3770
PVC** 11.4 to 21.4 1655 to 3110
ABS** 15.5 to 17.2 2250 to 2500


*Rubber figures given are typical. Your results may vary by specific rubber type.
**Tested to ASTM 4501
***n/r = not recommended

Solvent Resistance
Solvent Example Resistance

Ethanol, Methanol

+ + +
Ester (aromatic) Ethylacetate + + +
Ketone (aromatic)

Acetone, Benzophenone

– – –
Aliphatic hydrocarbon (alkanes)

Petrol, Heptanes, Hexane

+ + –
Aromatic hydrocarbons

Benzyl, Toluol, Xylol

+ + –
Halogenated hydrocarbons

Methylenchloride, Chloroform, Chlorobenzol

– – –
Weak aqueous

Nitrite, muriatic acid, sulphuric acid, phosphoric acid

+ + + (– – – if concentrated)
Weak aqueous base

sodium hydroxide solution, caustic potash

+ + + (– – – if concentrated)

Packaging & Availability

Packaging Type
Regional Availability
  • Africa
  • Asia Pacific (Excluding Russia)
  • Europe (Excluding Russia)
  • India
  • Latin America
  • Middle East
  • North America
Available Packaging
  • 20g, 50g, 500g bottles

Storage & Handling

Shelf Life
9 Months
Storage Conditions

Containers should be stored in a cool, dry, dark area. Storage temperature 15.5°C - 25°C (60°F - 77°F), without exposure to direct light or heat. Do not refrigerate.