What is Diamond Seal Technology?

Diamond Seal TechnologyDiamonds are the hardest substance known to man, and DIAMOND Seal Technology takes full advantage of this property. DIAMOND Seal Technology is the revolutionary water delivery system that combines a durable DIAMOND Valve with InnoFlex PEX waterways.
Patented DIAMOND Seal Technology is forever, requiring no lubrication and eliminating wear on the seals to ensure like new operation for the life of the faucet.With integrated InnoFlex supply lines, no intermediate risers are required. DURAMOUNT® mounting system provides durable, fast and corrosion resistant installation.
In single handle faucets, the handle limit stop on Delta’s DIAMOND™ Valve cartridge makes it easy to limit the range of the handle motion for hot water from full flow to a 50/50 mix. This feature is the smart choice to protect sensitive skin from scalding.
~ Delta.com