... cannot cause mating ring misalignment▪Good heat dissipation▪No external pump necessary▪Pre-assembled unit, ready to install▪Low space requirements ... carbide SSiC (Q12)Mating ring: Silicon carbide SSiC (Q1)Secondary seals: EPDM (E), NBR (P), FKM (V), FFKM (K)Springs: Hastelloy ... , 11, 12, 13, 14, 21, 22, 23, 31, 41, 32Between seals:52, 55, 53A, 53B, 53C, 54Atmospheric side:61, 62, 65A ...