Description
LORD 305-1 is the resin component Part A of the LORD 305 two-part epoxy adhesive system, supplied in bulk packaging for production, fabrication, and industrial bonding applications. When combined with LORD 305-2 hardener, the system delivers strong, durable, chemically resistant bonds across a wide range of substrates.
This medium-viscosity epoxy resin is engineered for structural bonding of metals, elastomers, thermosets, phenolics, fiberglass reinforced plastics, and wood. The cured adhesive exhibits excellent environmental resistance, toughness, and dimensional stability, making it well suited for assemblies exposed to temperature variation, moisture, vibration, and chemical exposure.
LORD 305-1 is commonly used in manufacturing environments where bulk hand-mixing, trowel application, brush coating, or custom batch sizes are required.
System Compatibility
LORD 305-1 must be mixed with LORD 305-2 Hardener at the specified ratio to achieve full performance. For customers seeking simplified dispensing and pre-metered mixing, the LORD 305 adhesive system is also available in 50 mL and 200 mL dual cartridges under the LORD 305-1/305-2 designation.
Key Features and Benefits
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Bulk epoxy resin for structural bonding applications
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Designed to be mixed with LORD 305-2 hardener
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Excellent adhesion to metals, rubber, FRP, phenolics, and wood
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Durable bonds with high load-bearing capability
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Resists oils, greases, dilute acids, alkalis, and solvents
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Environmentally resistant to moisture, sunlight, and weathering
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Performs across a wide service temperature range from -30°F to 250°F
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Low shrinkage and low creep for dimensional stability
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Room temperature cure with optional heat acceleration
Typical Applications
LORD 305-1 resin is used as part of the LORD 305 epoxy system in applications such as:
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Rubber-to-metal bonding for bushings, mounts, and vibration isolators
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Gaskets, rollers, and elastomeric components
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Structural bonding of metal or composite assemblies
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FRP, phenolic, and SMC panel bonding
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Wood laminations and engineered wood assemblies
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OEM part fabrication and industrial repair
Technical Specifications – LORD 305-1 Resin (Part A)
| Property | Value |
|---|---|
| Appearance | Clear amber liquid |
| Viscosity at 77°F | 10,000 to 18,000 cP |
| Density | 9.4 to 10.0 lb per gallon |
| Flash Point | Greater than 200°F |
| Mix Ratio with 305-2 | 1:1 by volume |
| Mix Ratio by Weight | 1.2:1 |
Cured Properties (305-1 Resin + 305-2 Hardener)
| Property | Value |
|---|---|
| Tensile Strength | 3,350 psi |
| Elongation at Break | 9.9 percent |
| Young’s Modulus | 283,694 psi |
| Glass Transition Temperature | 141°F |
| Cured Appearance | Translucent blue |
These cured properties make the LORD 305 epoxy system suitable for bonded assemblies exposed to cyclic loads, moderate flexing, and environmental stress.
Available Packaging
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1-gallon containers (4 per case)
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5-gallon pails
LORD 305-2 hardener is sold separately. Dual-cartridge options are available for smaller batch or metered dispensing needs.
Why Choose Bulk LORD 305-1
Bulk LORD 305-1 epoxy resin is ideal for manufacturers and fabricators who need flexibility in batch size, application method, and production scale. It offers the same proven performance as cartridge systems while supporting higher-volume usage and custom processing workflows.
Need Help Selecting Packaging or Mixing Method
Chemical Concepts stocks LORD 305 epoxy in both bulk and cartridge formats. Our technical team can help you select the correct packaging, mixing ratio, and application method for your process.
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