LORD Chemlok® 220 adhesive is a cover coat adhesive designed for use over Chemlok 205 primer. This adhesive system will bond a wide variety of elastomers such as natural rubber (NR), styrene-butadiene (SBR), polychloroprene (CR), nitrile (NBR) and polyisoprene (IR) to various metals and other rigid substrates during vulcanization of the elastomer. It is composed of a mixture of polymers, organic compounds and mineral fillers dissolved or dispersed in an organic solvent system.

1. Features and Benefits
- Versatile – bonds a variety of elastomers and metals when used in combination with Chemlok 205 primer.
- Environmentally Resistant – provides superior resistance to heat, water, salt spray, chemicals, oils, solvents and corrosive atmospheres.
- Easy to Apply – applies easily by dip, spray or brush methods.

2. Typical Properties

3. Application
- Surface Preparation – Thoroughly clean metal surfaces prior to adhesive application. Remove protective oils, Chemlok® 220 Adhesive cutting oils and greases by solvent degreasing or alkaline cleaning. Remove rust, scale or oxide coatings by suitable chemical or mechanical cleaning methods.
- Chemical Cleaning
 Chemical treatments are readily adapted to automated metal treatment and adhesive application lines. Chemical treatments are also used on metal parts that would be distorted by blast cleaning or
where tight tolerances must be maintained. Phosphatizing is a commonly used chemical treatment for steel, while conversion coatings are commonly used for aluminum.
- Mechanical Cleaning
 Grit blasting is the most widely used method of mechanical cleaning. However machining, grinding or wire brushing can be used. Use steel grit to blast clean steel, cast iron and other ferrous metals. Use aluminum oxide, sand or other nonferrous grit to blast clean stainless steel, aluminum, brass, zinc and other nonferrous metals.

4. Shelf Life/Storage
Shelf life is two years from date of shipment when stored at 21-27°C (70-80°F) in an original, unopened container. Do not store or use near heat, sparks or open fl ame.

5. Package
1kg/can, 3.5kg/can