Two-part epoxy resin kits usually include one tube filled with epoxy and another tube filled with what?

Two-part epoxy resin kits typically consist of an epoxy resin and a hardener. The epoxy resin provides the adhesive qualities and structure, while the hardener facilitates the curing process. When the resin and hardener are mixed together, a chemical reaction occurs that causes the mixture to harden and form a strong bond.

The hardener is crucial for achieving the desired properties of the epoxy, such as strength, durability, and resistance to various environmental factors. Without the hardener, the resin would remain in a liquid state and not achieve its intended functional characteristics. This combination is what makes epoxy a popular choice for various bonding, sealing, and coating applications in fields such as construction, automotive, and crafting.