H.B. Fuller EY2562

H.B. Fuller EY2562 is designed to fill the need for a strong, pourable, and lightweight filler for honeycomb core panels. It can be used to pot fasteners or as an edge closeout after the panel is trimmed to contour. It is fire retardant, resistant to long exposure to 350°F, and cures at room temperature in thicknesses in excess of one inch.

Chemical Family: Epoxy & Epoxy Derivatives

Product Type: 2K (2 component) Adhesive, Epoxy Adhesive, Reactive Adhesive, Structural Adhesive

Application Area: Aerospace Applications

Compatible Substrates & Surfaces: Composites, Metal, Plastics

Features: Chemical Resistant, Flame Retardant, Good Sagging Resistance, Good Thermal Stability, Light Weight, Room Temperature Curing, Self Extinguishing

Technical Data Sheet
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Enhanced TDS

Identification & Functionality

Features & Benefits

Ready-to-Use Product Features
Features and Benefits
  • Extremely Light Weight
  • Excellent Chemical Resistance
  • Self Extinguishing
  • Excellent Bonding to Metals, Composites, Coatings, and Most Plastics
  • Excellent Chemical Resistance
  • Suitable for MMD Dispensing Equipment
  • Excellent Thermal Performance
  • Room Temperature Cure

Applications & Uses


Physical Form
Component A
ValueUnitsTest Method / Conditions
Component B
ValueUnitsTest Method / Conditions
Cured Mechanical Properties
ValueUnitsTest Method / Conditions
Overlap Shear Strength (Aluminum, acid etched, at 50% RH)11.0MPaASTM D1002
Operating Temperature- 55 - 177°C-
Uncured Properties
ValueUnitsTest Method / Conditions
Specific Gravity0.84--
Volume Mix Ratio0.0--
Full Cure (at 23°C)48 - 72h-
Gel Time90.0min-
Handling Time16.0h-
Full Cure (at 66°C)2.0h-
Weight Mix Ratio1900-01-03T04:40:00+00:00--
Rheological Properties
ValueUnitsTest Method / Conditions
Viscosity (Mixed)20000.0cP-

MDL 8027 Type 7, Revision 1

Technical Details & Test Data

General Instructions

Surfaces must be clean, dry and free from grease, oil, paint, wax and weak oxide films and other surface contaminants. Chemical etching, sanding or grit blasting often gives the best results. Bring both components to room temperature prior to mixing. Be sure to stir the entire container of EY2562A. It contains hollow glass spheres which rise to the surface of the liquid resin. The contents must be of uniform consistency before adding hardener. Just prior to using, blend the two components, Part A and Part B, in the ratio above. Stir thoroughly with a slow speed mixer, to avoid breaking the glass microballoons. Mechanical mixing is preferable, but should be carried out at slow speeds (<300 rpm), taking as little air as possible into the adhesive batch. Spread a thin layer of the mixed adhesive on one or both of the parts to be bonded. Once the adhesive is applied, no open time is necessary. The surfaces can be assembled immediately. Parts should be assembled while the adhesive is still wet to the touch before it sets. The individual parts, the ambient temperature and the adhesive itself will dictate the open time permitted.

Packaging & Availability

Regional Availability
  • Africa
  • Asia Pacific (Excluding Russia)
  • Europe (Excluding Russia)
  • India
  • Latin America
  • Middle East
  • North America

Storage & Handling

Shelf Life
12 Months
Storage Conditions

Product should be stored in a cool dry place out of direct sunlight. The shelf life is from date of manufacture. Shelf life is based on the products being stored properly at temperatures between 12°C and 25°C. Exposure to temperatures above 25°C will reduce the shelf life. This product should not be frozen.