LOCTITE AA 330

Harmonization Code : 3506.91.90.99 | 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 ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other

LOCTITE AA 330

Main features

  • Multi-Material Urethane Bonding
  • One-Component Application Urethane Bonding
  • High-Strength Structural Bonding

Product Description

LOCTITE® AA 330 is a one-component, high-viscosity, activator-cured acrylic adhesive for general-purpose bonding of metal, wood, ferrite, ceramic, and plastic materials. The slightly cloudy, colorless-to-pale-yellow liquid requires no mixing and is commonly used for tool handles, appliances, sporting goods, and decorative trim. Under specified test conditions, it develops high lap-shear and tensile strength on grit-blasted mild steel and supports bond gaps up to 0.5 mm when used with LOCTITE Activator 7387 or 7386.

Key features

  • Multi-material bonding: Suitable for bonding metals, wood, ferrite, ceramics, and compatible plastics.
  • One-component application: Requires no adhesive mixing and cures rapidly when paired with the specified activator.
  • High-strength, gap-tolerant performance: Provides 15–30 N/mm² lap-shear strength on grit-blasted mild steel and supports gaps up to 0.5 mm under specified application conditions.
Product Family

LOCTITE AA 330

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TDS, SDS & Technical Documents

Technical Specifications

General Properties
Appearance
Appearance at room temperature.
Slightly cloudy, colorless to pale yellow liquid
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.
1.05
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
45,000 - 90,000 mPa.s

Additional Information

Technical properties

As-supplied / before-processing properties

Typical properties of the uncured material; values are reference data and may vary by test method and production batch.

Property Value Unit Method / condition
Technology Acrylic — TDS product classification
Chemical type Urethane methacrylate ester — Uncured material
Appearance Slightly cloudy, colorless to pale-yellow liquid — TDS description; current SDS lists amber liquid
Components One component — Requires no mixing
Viscosity classification High — TDS classification
Cure system With activator — LOCTITE Activator 7387 or 7386
Specific gravity 1.05 — At 25°C
Brookfield viscosity 45,000–90,000 mPa·s Brookfield RVT, 25°C, spindle 7, 20 rpm; TDS
Cone-and-plate viscosity 30,000–70,000 mPa·s EN 12092-SV, 25°C, after 180 s, shear rate 20 s⁻¹
Dynamic viscosity 50,000–80,000 mPa·s Brookfield RVT, 25°C, spindle 7, 20 rpm; current SDS
Kinematic viscosity 47,600–76,100 mm²/s At 25°C; current SDS
Density 1.05 g/cm³ At 20°C; current SDS
pH 10 — 20°C, 100% product; current SDS
Flash point 83 °C Tagliabue closed cup; current SDS
Recommended bondline gap 0.1 mm TDS application guidance
Maximum stated bond gap 0.5 mm Activator required on both surfaces; immediate assembly
Technical properties

After-processing / final-state properties

Typical cured properties depend on substrate, activator, bond gap, cure time, temperature, and test method.

Property Value Unit Method / condition
Coefficient of thermal expansion 151 × 10−6 K−1 ISO 11359-2; −25°C to 100°C
Thermal conductivity 0.1 W/(m·K) ISO 8302
Specific heat 0.3 kJ/(kg·K) Typical cured material
Lap-shear strength 15–30 N/mm² ISO 4587, grit-blasted mild steel, 24 h at 22°C, Activator 7387 on one side
Tensile strength 12–22 N/mm² ISO 6922, grit-blasted mild steel
Lap-shear strength, two-sided activator ≥16.5 N/mm² ISO 4587, grit-blasted mild steel, 24 h at 22°C, Activator 7387 or 7386 on both sides
Acetone resistance 10 % initial strength 22°C exposure; 350 h and 720 h
Motor-oil resistance 90 / 66 % initial strength MIL-L-46152 motor oil at 87°C; 350 h / 720 h
Unleaded-gasoline resistance 20 % initial strength 22°C exposure; 350 h and 720 h
Phosphate-ester resistance 93 / 75 % initial strength 87°C exposure; 350 h / 720 h
Water/glycol resistance 60 % initial strength 50/50 water/glycol at 87°C; 350 h and 720 h
Heat-aging strength retention Approx. 100 % initial strength 5,000 h at 100°C; tested at 23°C; chart-derived
Heat-aging strength retention Approx. 62 % initial strength 5,000 h at 120°C; tested at 23°C; chart-derived

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