S747

√ Dry-running, contact-free operation, no friction
√ Tandem seal arrangement. Primary seal acts as main seal, while secondary seal acts as safety seal
√ Unidirectional or bidirectional available
√ Shrouded mating ring prevents secondary damage in the event of a mating ring fracture
√ Both primary and secondary seals have the capability of full product pressure. In the event of an primary seal failure, the secondary seal acts as an installed spare with full pressure capability
√ Secondary seal gas supply (nitrogen) injection is available. Nitrogen has controlled the leakage across the seal face of secondary seal and no process gas leaks from the secondary seal to the atmosphere.
√ Cartridge design makes installation and removal easy
√ For most applications where neither process gas can leak to the atmosphere, nor external nitrogen can go into the compressor, which is a structure with the highest safety and reliability.