LOCTITE 348

Harmonization Code : 3506.10.00.00 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg

LOCTITE 348

Main features

  • Room-Temperature Adhesive Cure
  • Non-Sag Placement Control
  • Hand-Mixable Bonding Material

Product Description

LOCTITE® 348™ is a one-component, solvent-free epoxy adhesive supplied in convenient stick form for bonding, rebuilding, repairing and sealing applications. The hand-kneadable formulation combines resin and hardener in a single package and cures at room temperature after mixing. LOCTITE 348 adheres to a wide variety of substrates including metals, ceramics, wood, concrete and many rigid plastics, providing a durable bond with good mechanical strength and chemical resistance. Its non-sag consistency makes it particularly suitable for filling cracks, repairing damaged components and performing maintenance tasks in industrial environments.

Key Features & Benefits

  • Hand-mixable epoxy adhesive supplied in convenient stick form.
  • Ideal for repairing, rebuilding, filling and bonding applications.
  • Adheres to metals, wood, ceramics, concrete and many rigid plastics.
  • Non-sag consistency suitable for vertical and overhead repairs.
  • Room-temperature curing without specialized equipment.
  • Good chemical resistance and mechanical durability after cure.
  • Suitable for maintenance, repair and industrial service applications.

Recommended Applications

  • Repair of damaged equipment and machinery.
  • Filling cracks, voids and surface defects.
  • Bonding metal, concrete, ceramic and wood components.
  • Maintenance and emergency repair operations.
  • Rebuilding worn surfaces and damaged parts.
Product Family

LOCTITE 348

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TDS, SDS & Technical Documents

Technical Specifications

General Properties
Density (g)
1.3 g/cm3
Specific Gravity
Specific gravity (SG) is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume. For liquids, the reference substance is almost always water (1), while for gases, it is air (1.18) at room temperature. Specific gravity is unitless.
1.2
Physical Properties
Viscosity
Viscosity is a measurement of a fluid’s resistance to flow. Viscosity is commonly measured in centiPoise (cP). One cP is defined as the viscosity of water and all other viscosities are derived from this base. MPa is another common unit with a 1:1 conversion to cP. A product like honey would have a much higher viscosity -around 10,000 cPs- compared to water. As a result, honey would flow much slower out of a tipped glass than water would. The viscosity of a material can be decreased with an increase in temperature in order to better suit an application
1000 - 5,000 mPa.s
Thermal Properties
Thermal Conductivity
Thermal conductivity describes the ability of a material to conduct heat. It is required by power packages in order to dissipate heat and maintain stable electrical performance. Thermal conductivity units are [W/(m K)] in the SI system and [Btu/(hr ft °F)] in the Imperial system.
0.25 W/m.K

Additional Information

Technical Properties

As-Supplied / Before-Processing Properties

Property Value Unit Condition
Technology Epoxy — Two-part epoxy stick
Appearance Putty Stick — Before mixing
Color Off-White — Uncured
Mix Ratio 1:1 By Volume Integrated stick design
Working Time Approximately 3 min 23°C
Fixture Time Approximately 10 min Typical room-temperature cure
Full Cure Time 24 h 23°C
Application Form Hand Kneadable Putty — Maintenance repair use
Technical Properties

After-Processing / Final-State Properties

Property Value Unit Condition / Method
Compressive Strength 55 MPa Fully cured
Tensile Strength 6.9 MPa Room-temperature cure
Shore Hardness 85 Shore D Fully cured
Service Temperature Range -30 to 120 °C Typical operating conditions
Machinability Excellent — Can be drilled, tapped and sanded
Chemical Resistance Good — Resistant to many industrial fluids
Gap Filling Capability Excellent — Repair and rebuilding applications
Cured Material Type Rigid Epoxy Composite — After complete cure

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