Modified epoxy for flexible bonding and sealing

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Application Tips

  1. Loxeal 4821 is an epoxy system used for bonding of dissimilar substrates in various bonding and sealing applications where toughness and flexibility is required.
Replaces boltrivetssolderingbrazing
Available pack size 50ml, 400ml dual cartridges
Standards ISO, DIN,RoHS, REACH
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Chemical Composition Part A : Epoxy resin based Part B : Hardener polyamine​
Curing Mechanism Polymerization mixing of resin & hardner.
Mixing Ratio by Volume 2 : 1
Color Part A : White
Part B : Black
Recommended substrates Metals, plastics, composites, ceramic
Max gap fill 0.1 – 5.0 mm
Pot Life 10 – 15 minutes
Full Cure time 72 hours
Shear Strength 4 – 7 N/mm²
Peel Strength 60 – 80 N/25mm
Hardness 70 – 85 Shore A , 20 – 30 Shore D
Elongation at Break 80 – 150%
Service Temperature -40°C / +120°C

Features and Benefits

Loxeal 4821 is a modified epoxy that forms soft and flexible bond
Provide temperature resistance up to +120°C with peaks of 150°C
Unlike general purpose epoxy adhesives, it adheres fully to PA, ABS, PC,PET, PMMA ,PI and many other plastics. Also bonds well to metals, ceramics, composites.


  • The product offers very good flexibility to bond line and thus is very good to bond dissimilar substrates.
  • It fully cures in about 72hours, thus it is important to allow full curing while evaluating and testing the product to field conditions.
  • Shelf life is 6 months in unopened packaging.