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Loctite 420/20G – Adhesive For General Purpose
Loctite 420 Instant Adhesive – General purpose, capillary.
Loctite 4204 is a general purpose adhesive suitable for applications where heat resistance is required. Loctite 4204 is toughened with elastomers for flexibility, impact resistance and improved resistance to heat and humidity.
Chemical Type: Ethyl cyanoacrylate
Appearance (uncured): ) Colorless to slightly pale yellow homogeneous liquid
Components: One part – requires no mixing
Key Substrates: Rubbers, Plastics and Metals
Typical Properties of Uncured Material
Specific Gravity @ 25°C 1.1
Viscosity, Brookfield – RVT, 25°C, mPa·s (cP):
–Spindle 5, speed 20 rpm: 2,000 to 6,000
Viscosity, Cone & Plate, 25°C, mPa·s (cP):
–Physica MC100, Cone MK 22, shear rate 100: 180 to 600
Typical Performance of Cured Material
Cured for 24 hours @ 22°C
Lap Shear Strength, ISO 4587:
Steel (grit blasted): N/mm² 17.2 to 19.3 (psi) (2,490 to 2,800)
Aluminum: N/mm² 14.3 to 15.9 (psi) (2,070 to 2,300)
SBR: N/mm² 0.9 to 1.0 (psi) (130 to 145)
Nitrile: N/mm² 0.8 (psi) (115)
Neoprene: N/mm² 0.7 (psi) (110)
Block Shear Strength, ISO 13445:
ABS: N/mm² 18 to 20 (psi) (2,610 to 2,900)
Phenolic: N/mm² 16.8 to 17.4 (psi) (2,440 to 2,520)
G-10 Epoxy: N/mm² 16 to 21 (psi) (2,320 to 3,045)
Polycarbonate: N/mm² 3.1 to 3.4 (psi) (450 to 490)
PVC: N/mm² 4.8 to 7.7 (psi) (700 to 1,120)
Please store this product in the unopened container in a dry location.
Further storage information may be indicated on the product container labeling.
This product is not recommended for use in pure oxygen and/or oxygen rich systems and should not be selected as a sealant for chlorine or other strong oxidizing materials.
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