Equivalent to Burgmann MBS682
API 682 Category 2 and 3, Type C,Arrangement 1 seal
Single seal
Balanced
Cartridge unit
Rotating metal bellows
Shrink fitted seal ring and solid mating ring
Operating range
Pressure single ply bellows: p = vacuum ... 25 bar (... 363 PSI)*
Pressure double ply bellows: p = vacuum ... 35 bar (... 508 PSI)
Temperature: t = -75 C ... +400 C (-103 F ... +752 F)
Viscosity: ... 1,000 mPas
Solids content: ... 0.5 wt.%
* p >20 bar (290 PSI) on request.
Materials
Seal ring: Blister resistant carbon,Silicon carbide SSiC (Q1), RBSiC (Q2)
Mating ring:Silicon carbide SSiC (Q1), RBSiC (Q2)
Bellows: Inconel 718 (M6)
Secondary seals: Graphite (G)
Metal parts: CrNiMo steel 316 (G), Carpenter 42 (T4).

Service
Provide special design
According to the requirements and conditions for the custom processing

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