For applications demanding exceptional chemical resistance, especially to acids, fuels, and oils, Master Bond has developed EP21AR. Whether coating, lining, bonding or sealing, this two-component epoxy can withstand harsh, acidic environments, including prolonged immersion in 96 to 98% sulfuric acid and 36% hydrochloric acid for over a year.
- Dielectric strength of 400 volts/mil provides durability and stability as well as electrical insulation
- Coefficient of thermal expansion is 45-55 ppm/C
- Serviceable from -60 F to +275 F
- Produces high strength, abrasion resistant bonds with a tensile strength over 10,000 psi, a shear strength exceeding 2,700 psi, and a compressive strength greater than 14,000 psi at 75 F
- Employs a 2 to 1 mix ratio by weight, and a mixed viscosity of 10,000-15,000 cps
- 100% reactive with no solvents or diluents
- Applies smoothly in any thickness
- Has a working life of 45 to 55 minutes at ambient temperature for a 200 gram batch, and cures at room temperature or faster at elevated temperatures
- Bonds to various substrates including metals, glass, ceramics, cements, vulcanized rubbers, wood and many plastics
- Available in pint, quart, gallon and 5 gallon container kits
- Applicable in industries including oil and chemical processing, maintenance and repair, optics, metalworking, appliance, and electrical/electronic
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