EP21TP-2 Product Description

Master Bond EP21TP-2 is a two component epoxy polysulfide system formulated to cure at room temperature or more rapidly at elevated temperatures, with a one to one mix ratio by weight or volume. It’s a versatile material that can be used as an adhesive, coating, encapsulant and especially as a sealant. It resists a wide array of chemicals including water, gasoline, fuels, oils, hydrocarbons, hydraulic fluids and many acids and bases. Significantly, unlike many chemical resistant epoxy based materials, this system has excellent toughness and flexibility. These properties enable EP21TP-2 to withstand rigorous thermal cycling as well as mechanical and thermal shocks. It bonds well to a variety of substrates, including metals, glass, ceramics and many rubber and plastic materials. The cured system has excellent electrical insulation properties. Its service temperature range is -80°F to +250°F. The color of Part A is tan and Part B is amber, although, other colors are available. Polysulfide based systems, including EP21TP-2, have been used as fuel tank sealants and as sealing compounds for electrical connectors exposed to fuels, oils and lubricants, for many years. EP21TP-2 is also widely used in the aerospace, OEM, electronic, electrical, chemical and related industries.

Product Advantages

• Convenient mixing: forgiving one to one mix ratio by weight or volume.
• Easy to apply—adhesive spreads evenly and smoothly.
• Ambient temperature cures or fast elevated temperature cures as required.
• Produces tough, flexible bonds; resistant to thermal cycling.
• Bonds well to similar and dissimilar substrates.
• Superb resistance to oils, fuels and related chemicals.