Cilbond® R-7290W

Identification

Carrier

Water

GBU

EA

RTU Product Type

1K (1 component) Adhesive,

Waterborne Adhesive

Categories

Markets → Industrial → Applications → Chemical & Industrial Manufacturing → Equipment & Parts

Technologies → Adhesives & Sealants → Product Families → Bonding Technology → Water-Based Adhesives

Applications

Application Area

Rollers,

Gaskets,

Tank Lining,

Bushings,

Seals,

Couplings,

Pump Linings,

Engine Mounts,

Suspension Mounts,

Hydromounts,

Torque Vectoring Device,

Stabiliser Bars,

Cavity Pump Stators

Application Method

Dip Coating,

Brush,

Spray,

Nozzle

Compatible Substrates & Surfaces

Metal,

Elastomers & Rubbers,

Ethylene Propylene Diene Monomer (EPDM),

Styrene Butadiene Rubber (SBR),

Nitrile Rubber,

Butyl Rubber,

Hydrogenated Acrylonitrile Butadiene Rubber (HNBR),

Carboxylated Nitrile Butadiene Rubber (XNBR)

Segment

Rubber to Metal

Applications & Uses

Usage Information

Agitation: Stir Cilbond R-7290W gently, yet thoroughly before use. Avoid creating froth or foam. After mixing stir occasionally during use, as it is important that the system remains homogenous. For large-scale processes, continuous stirring is recommended.
Brushing: Cilbond R-7290W may be applied by brushing as delivered, but can be diluted with 5-15% deionised water to improve flow and wetting.
Two thin coats are preferred to one thick coat. Avoid over-brushing and ensure brushes are fully wetted with the bonding agent.
Dipping: To dip apply, dilute with deionised water to a minimum viscosity of 18 seconds using a Zahn No.2 cup or 16 seconds using a DIN 4 / Ford 4 Cup. Ensure the bonding agent forms a uniform film, which dries without blisters or trapped air.
Spraying: To spray apply, dilute with deionised water to a minimum viscosity of 18 seconds using a Zahn No.2 cup or 16 seconds using a DIN 4 / Ford 4 Cup. A nozzle size of ca. 1.0 – 1.5 mm is recommended for most applications. Use a fluid pressure of 0.5 - 1.0 bar and an air pressure of typically 1.5 – 3.0 bar, dependent on the fineness of the spray required. HVLP spray systems are recommended. Ensure the bonding agent forms a uniform film, which dries without blisters or trapped air.
Dilution: Cilbond R-7290W should be diluted with de-ionised or distilled water.
Thickness: For best bonding and for maximum environmental resistance, aim for a dry coating thickness of 20 – 30 microns.
Drying: To improve drying and film formation, we recommend that metals are pre-warmed to 40-50°C before coating. If drying at room temperature, allow 30 - 60 minutes between coats, or force-dry at 40 - 60°C to fully coalesce the film. It is important that the films are dried thoroughly and without porosity. It is recommended to avoid environments with a humidity of >>70% RH.
Pre-baking: Once dried, pre-bakes of up to 10 minutes at 155°C are possible, but longer pre-bakes should be avoided.
Storage: Fully dried coated parts may be stored for several weeks, provided they are protected from dust, oil vapours and water.

Features

Ready-to-Use Product Features

Excellent Fuel Resistance,

Heat Resistance,

Oil Resistant,

Water-based,

Transmission Oil Resistance,

Improves Environmental Resistance

Features & Benefits

Benefits

Bonding Capabilities:

Cilbond R-7290W is a one-component bonding system for adhering the following elastomers to metals and polar engineering plastics:

• Natural Rubber (NR)
• Styrene Butadiene Rubber (SBR)
• Butyl Rubber (IIR)
• Ethylene Propylene Diene Terpolymer (EPDM)
• Nitrile Rubber (NBR and XNBR)
• Hydrogenated NBR (HNBR Sulphur or Peroxide cured)

In-service Benefits:

Bonds made with Cilbond R-7290W are expected to survive the following environments:

• Boiling water
• Hot glycol tests at 160oC for up to 250 hours without blisters or loss of adhesion
• Salt-spray tests on parts show ≤4mm edge fail after 250 hours in 5% salt solution at 35oC and under a 30% extension
• Superior resistance to oils, fuels and transmission fluids at up to 160oC
• Dry heat resistance to 170oC for extended periods

​​​​​Processing Benefits:

• Cilbond R-7290W is easy to use and is suited to processes involving spray application.
• Coated parts may be stored for several weeks prior to moulding the elastomer, provided they are protected from contamination.

Packaging & Availability

Regional Availability

• Latin America

Packaging Information

Cilbond R-7290W will be available in 10 and 25 litre containers. 250ml trial samples are available upon request.

Physical Properties

Physical Form

Liquid

Appearance

Grey/Green liquid

Properties

Density:

1070.0 kg/m³

Shelf Life:

6.0 months

Specific Gravity:

1.07

Typical Physical Properties

	Value	Units	Test Method / Conditions
Bonding Temperature Range	130 - 180	°C	-
Minimum Film Forming Temperature	20	°C	-
Non-Volatile Solids	21	Wt(%)	-
Open Time of Protected Dried Coatings	3 weeks	-	-
Specific Gravity	1.07	-	-
Typical Coverage	18	m²/L	-
Viscosity	25	seconds	No. 3 Zahn Cup

Appearance

Grey/Green liquid

Regulatory & Compliance

Certifications & Compliance

ISO 9001

Storage & Handling

Storage Information

• Cilbond R-7290W should be stored in a cool environment, ideally at 10-20°C. It is a water-based product, so avoid freezing and ideally ensure it does not fall below 5°C. If freezing does occur, warm slowly and then stir gently with a low-moderate shear stirrer.
• Avoid transporting or storing at temperatures below 0°C or above 35°C.

Shelf Life

6 months