Adhesive

Loctite 4204 Instant Adhesive

Name: Loctite 4204 Instant Adhesive
Brand: Hong Teck Hin
Availability: InStock

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Description

Loctite 4204 is a transparent, colorless, high-viscosity, ethyl-based instant adhesive designed to excel in high-temperature environments where standard cyanoacrylates fail. Toughened with elastomers, this prism thermal resistant formula provides exceptional flexibility, impact resistance, and enhanced durability against mechanical shock and humidity.

Whether you are managing assembly lines or sourcing components, this 20g commercial grade instant adhesive ensures rapid fixture times and reliable performance on diverse substrates. For optimal surface preparation or post-application cleanup, excess adhesive can be efficiently removed using Loctite 7063.

Technical Specifications

Product: Loctite 4204 Prism Thermal Resistant Instant Adhesive (20g)
Shear Strength (Grit Blasted Steel): 2400 psi
Temperature Range: -65°F to 250°F (-54°C to 121°C)
Viscosity: 4000 mPa.s (cP) Brookfield (Very High Viscosity)
Key Substrates: Rubbers, Plastics, and Metals
Curing Type: Moisture / Humidity
Fixture Time: 10–30 seconds
Formulation: Solvent-free, elastomer-toughened ethyl cyanoacrylate

Key Benefits & Industrial Applications

Advanced Thermal Stability: Formulated specifically for applications requiring continuous heat resistance up to 250°F.
Elastomer-Toughened Flexibility: Delivers superior impact resistance, making it ideal for bonding small to medium-sized parts subject to vibration or thermal cycling.
Rapid Fixture Speed: Cures rapidly (10–30 seconds) when confined between thin bond lines (optimal gap: 0.05 mm), maximizing assembly-line throughput.
Multi-Material Versatility: Strong adhesion across metals, rubbers, and plastics. For difficult-to-bond polyolefins, use in combination with Loctite SF 770.

Usage and Storage Guidelines

For industrial-grade performance, ensure all bond surfaces are thoroughly clean and free from grease or oil contaminants. Atmospheric moisture initiates the curing process; while functional strength develops rapidly, full chemical and solvent resistance is reached after 24 hours.

Storage Note: Store in the unopened original container in a cool, dry location. Optimal storage temperature is between 8°C and 21°C. Storage below 8°C or above 28°C can adversely alter product properties.

Safety Warning: This product is not recommended for use in pure oxygen or oxygen-rich systems, and must not be selected as a sealant for chlorine or other strong oxidizing materials. Consult the Safety Data Sheet (SDS) before handling.

Frequently Asked Questions (FAQ)

What is the cure time for Loctite 4204 on industrial substrates?

Loctite 4204 achieves a fixture time within 10 to 30 seconds under normal conditions (22°C / 50% relative humidity), defined as developing a shear strength of 0.1 N/mm². Full functional chemical and solvent resistance develops over a 24-hour curing cycle.

Can Loctite 4204 bond low surface energy plastics like polypropylene?

Yes, while engineered for metals, rubbers, and standard plastics, Loctite 4204 can successfully bond polyolefins and difficult plastics when paired with a specialty primer such as LOCTITE® SF 770 or LOCTITE® SF 7239.

How does bond gap thickness affect the performance of Loctite 4204?

This adhesive performs best in thin bond gaps of approximately 0.05 mm. Narrow bond lines maximize cure speed and tensile strength. For larger gaps where cure speed is delayed, an activator may be applied, though testing is recommended to ensure ultimate bond strength compliance.

Is there bulk pricing available for bulk procurement orders?

Yes. As a major commercial hardware supplier, we offer competitive wholesale pricing and tiered volume discounts for manufacturing plants, engineering firms, and procurement managers requiring continuous inventory supply.