RealSeal 1 Bonded Obturator is in carrier based delivery systems. All the components of RealSeal 1 sealer, filler and core are resin-based materials and bond with each other to form a superior seal. Creating a true chemical bond when materials contact, this proven technology provides superior leakage prevention.1 As an added benefit, this system's core is engineered to be easily discernable on a radiograph from the Resilon filling material that coats it.