H.B. Fuller logo

U304

1 of 13 products in this brand
U304 is a medium-to-high viscosity, medical-grade UV-curable adhesive designed for bonding a wide variety of plastics in a multitude of configurations. It is strong, flexible and well-suited to bonding dissimilar substrates. U304 is certified to the ISO standard 10993 Part 5 for Cytotoxicity, making it suitable for use in medical devices.

Product Type: 1K (1 component) Adhesive, Contact Adhesive, Radiation Curable Adhesive

Application Area: Airway Mask, Balloon Bonding, Catheters, Hoses, Mechanical Device Assembly, Medical Applications, Medical Devices, Tubes

Compatible Substrates & Surfaces: High Density Polyethylene (HDPE), Low Density Polyethylene (LDPE), Nylon, Plastics, Polyethylene (PE), Polyethylene Terephthalate (PET), Polyethylene Terephthalate Glycol (PET-G), Polypropylene (PP), Thermoplastic Polyurethane Elastomer (TPU)

Features: Excellent Strength, Flexible, Good Impact Strength, High Viscosity, Medium Viscosity, UV Curable

View All Documents

Enhanced TDS

Identification & Functionality

Product Type
1K (1 component) Adhesive,
Contact Adhesive,
Radiation Curable Adhesive
Technologies
Adhesives & Sealants
Product Families
Adhesives & Sealants — Bonding Technology
1K Liquid Reactive Adhesives,
Contact Adhesives

Features & Benefits

Ready-to-Use Product Features
Excellent Strength,
Flexible,
Good Impact Strength,
High Viscosity,
Medium Viscosity,
UV Curable

Applications & Uses

Markets
Healthcare & Pharma
Applications
Healthcare & Pharma — Medical
Medical Devices & Assemblies
Application Area
Airway Mask,
Balloon Bonding,
Catheters,
Hoses,
Mechanical Device Assembly,
Medical Applications,
Medical Devices,
Tubes
Compatible Substrates & Surfaces
High Density Polyethylene (HDPE),
Low Density Polyethylene (LDPE),
Nylon,
Plastics,
Polyethylene (PE),
Polyethylene Terephthalate (PET),
Polyethylene Terephthalate Glycol (PET-G),
Polypropylene (PP),
Thermoplastic Polyurethane Elastomer (TPU)
Cure Method
Radiation Cure
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 expose to UV dose when ready.
  • An adequate bond should develop rapidly, depending on UV dose efficacy, and maximum strength is attained in 24 hours.
  • Wipe off excess adhesive from the top of the container and recap. products, if left uncapped or exposed to sunlight, may deteriorate or cure prematurely.

Properties

Appearance
light straw liquid
Cured Mechanical Properties
ValueUnitsTest Method / Conditions
Hardness70Shore DASTM D2240
Elongation to Break175%ASTM D638
Technical Data
ValueUnitsTest Method / Conditions
Viscosity (20°C to 25°C)850 - 1150cPs
Specific Gravity1.06
Cured Properties
ValueUnitsTest Method / Conditions
Flash Pointmin. 95°C
Set Time and Wavelength (at 395nm, 50mW/cm²)max. 6sec
Full Cure Time24hours
Optimum Wavelength300 - 420nm
Cured AppearanceColorless solid
Curing Performance
  • Photoinitiation initiates the curing process. Handling strength is reached in a short time, and will vary based on UV dose efficacy, 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.

Regulatory & Compliance

Certifications & Compliance
ISO 10993,
ISO 13485

Technical Details & Test Data

Percent Strength Retained at Given Dosage

U304_Technical Details

Performance of Cured Adhesive
Substrate N/mm² PSI
Metal n/r to n/r n/r to n/r
PETG 4.1 to 5.5 600 to 800
Glass 6.2 to 20.7 2500 to 3000
PMMA 17.2 to 7.6 900 to 1100
PC n/r to n/r n/r to n/r

* n/r = not recorded on this substrate

 

Performance Range by Substrate

U304_Performance Range, by Substrate

Packaging & Availability

Country Availability
India
Regional Availability
  • Europe
  • India/MiddleEast/Africa (IMEA)
  • Latin America
  • North America

Storage & Handling

Shelf Life
9 months
Storage Conditions
  • U304 should be stored unopened in a cool, dry place out of direct sunlight. U304 should be kept at room temperature away from direct light.
  • Protect from extreme heat or cold, do not refrigerate.
  • Storage Condition : 8°C to 21°C in darkness