IOTA H21500 is a high-performance two-component polycarbosilane adhesive with solvent-free formulation and short medium-temperature curing, balancing efficiency and heat resistance. With temperature resistance over 1500℃ and excellent mechanical properties across the full temperature range, it is especially suitable for graphite bonding and widely used for sealing and joining metals, ceramics and composites, as well as refractory coating preparation. Stable performance and lasting strength, maintaining high bonding strength from 500℃ to 1400℃ for harsh high-temperature environments. Flexible customizable packaging, easy storage with 1-year shelf life. Combining extreme heat resistance, strong adhesion and broad compatibility, it serves high-end equipment, thermal systems and advanced ceramics, delivering reliable bonding and sealing under severe working conditions.