LOCTITE® HY 4090 is a unique two-component adhesive formulated with a cyanoacrylate/epoxy hybrid base. It is mixed in a 1:1 ratio to initiate curing and provides a strong, durable bond after 90-180 seconds. It offers exceptional bonding to a range of materials, such as ceramics, tile, glass, wood, plastics, and steel.
LOCTITE® HY 4090 is a cyanoacrylate/epoxy hybrid adhesive designed for a wide variety of high-performance bonding applications. With a mix ratio of 1:1 by volume and a high viscosity, it cures quickly at room temperature after mixing with a fixture time of 90 to 180 seconds and gap-filling capabilities up to 5.0 mmm. After curing it provides a high shear strength of 2,420 psi and resistance to impacts, vibration, and high temperatures up to 150°C (300°F). This adhesive is compatible with various rough or poorly fitting surfaces like steel, rubber, wood, ceramic, tile, glass, and plastics, offering additional resistance to moisture, UV, and shock. LOCTITE® HY 4090 is widely recommended for automotive, electrical, industrial, construction, and consumer goods applications due to its excellent versatility and strong bonding.
Part A properties:
Chemistry: Cyanoacrylate
Appearance: Transparent colorless to straw-colored liquid
Specific Gravity, g/cm³: 1.01
Viscosity, Cone & Plate, mPa·s (cP) @ 25°C: 4,000 to 7,000
Part B properties:
Chemistry: Epoxy
Appearance: Off-white to light yellow gel
Specific gravity, g/cm³: 1.06
Viscosity, Cone & Plate, mPa·s (cP) @ 25°C: 25,000 to 40,000
Fixture Time @ 25°C, seconds: <180
Glass Transition Temperature, °C: 88
Shore Hardness, Durometer D: 65 to 69
Tensile Strength, at break, ISO 527-3 N/mm² (psi): 7.1 (1,025)
Tensile Modulus, ISO 527-3 N/mm² (psi): 565 (81,800)
Elongation, at break, ISO 527-3, %: 3.6
Primary Chemistry: Cyanoacrylate/epoxy hybrid
Two-component hybrid adhesive
1:1 mix ratio
High viscosity
Room temperature cure
Excellent humidity and vibration resistance
Fixture time of 90 to 180 seconds
Gap-fill up to 5 mm
Resistance to vibration, shock, and impact
High-temperature resistance up to 300°F
UV-resistant
High shear strength
Non-sag
Low blooming
Bonds steel, wood, rubber, glass, ceramic, tile, and plastics
Poor adherence of adhesive to difficult substrates and rough or poorly fitting surfaces
Poor aesthetic appearance of bonding line after cure
Design and assembly applications
Electrical, industrial, and construction applications
Consumer goods
Fiberglass resin reinforcement
Aramid fibers, carbon fiber
Filling cracks in resins
Household and automotive repairs
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