DYGRF mechanical seals are organized with an integral part in the seal faces:silicon carbide (sic,ssic)vs silicon carbide(sic,ssic) with o-ring designs, a self-contained unit , a cartridge mechanical seal.
A cartridge mechanical seal is a self-contained unit consisting of a shaft sleeve,seal,and gland plate.The purpose of a cartridge mechanical seal is to eliminate common causes of mechanical seal failure from installation errors.