H.B. Fuller 42327/52343

H.B. Fuller 42327/52343 is a medium-hardness, semi-flexible, two-component polyurethane adhesive. It is designed for bonding applications requiring resilient bonds, non-sag application, and enhanced adhesion to flexible substrates. It is suitable for bonding metals, ceramics, natural rubber, thermosetting polymers, and select types of unprepared thermoplastic substrates such as ABS, polycarbonate, and nylon.

Chemical Family: Polyurethanes (PU), Urethanes

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

Compatible Substrates & Surfaces: Acrylonitrile Butadiene Styrene (ABS), Ceramic, Elastomers & Rubbers, Metal, Nylon, Plastics, Polycarbonate (PC)

Features: Chemical Resistant, Fast Setting, Good Sagging Resistance, High Flexibility, Medium Hardness, Room Temperature Curing, Thixotropic

Technical Data Sheet
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Enhanced TDS

Identification & Functionality

Features & Benefits

Features and Benefits
  • Excellent bond strength to a wide variety of substrates
  • Low Exotherm
  • Good thermal performance
  • Good chemical resistance
  • Non Sag
  • High Flexibility

Applications & Uses

General Instructions

Surfaces to be bonded must be clean, dry and free from grease, oil, wax, weak oxide films and other contaminants. Bring both components to room temperature prior to mixing. Measure out specified amounts of parts A and B and mix, without introducing bubbles, until homogenous. Meter-mix equipment equipped with an automatic purge is recommended for higher volume applications. Contact your H.B. Fuller representative for suggested application equipment to suit your specific needs. We recommend that containers be purged with nitrogen after they are opened to the air and not all the material is used.


Physical Form
Component A
ValueUnitsTest Method / Conditions
Component B
ValueUnitsTest Method / Conditions
Cured Mechanical Properties
ValueUnitsTest Method / Conditions
Overlap Shear Strength (E-Coat steel, IPA wipe, at 50% RH)24.9MPaASTM D1002
Overlap Shear Strength (Polycarbonate, IPA wipe, at 50% RH)13.8MPaASTM D1002
Overlap Shear Strength (GFPC, abraded, at 50% RH)14.3MPaASTM D1002
Overlap Shear Strength (Nylon 6-6, abraded, at 50% RH)7.2MPaASTM D1002
Overlap Shear Strength (ABS, IPA wipe, at 50% RH)4.4MPaASTM D1002
Overlap Shear Strength (Electrogalvanized steel, IPA wipe, at 50% RH)13.1MPaASTM D1002
Overlap Shear Strength (Aluminum, abraded, at 50% RH)15.2MPaASTM D1002
Overlap Shear Strength (Stainless steel, abraded, at 50% RH)22.3MPaASTM D1002
Overlap Shear Strength (Cold rolled steel, abraded, at 50% RH)20.7MPaASTM D1002
Technical Data
ValueUnitsTest Method / Conditions
Open Time4.0min-
Uncured Properties
ValueUnitsTest Method / Conditions
Tack Free Time15.0min-
Specific Gravity1.31--
Gel Time (at 23°C, 100 gram)3 - 5min-
Weight Mix Ratio1900-01-03T06:05:00+00:00--
Full Cure (2 hours, at 80°C)18.0h-
Rheological Properties
ValueUnitsTest Method / Conditions
Viscosity (Mixed)Thixotropic paste--

Packaging & Availability

Regional Availability
  • Latin America
  • North America

Storage & Handling

Shelf Life
6 Months
Storage Conditions

These materials should be stored in a dry environment within a temperature range of 16 °C to 27 °C (60 °F to 80 °F). Extremes of temperature beyond this range may result in crystallization or polymerization of the materials. Introduction of a nitrogen blanket into the containers before closing will improve the storage life of the products. A wide variety of cleaning solutions are available for cured and uncured epoxies and polyurethanes. For more information on proper recommendations and procedures, contact the Technical Department.