Balanced
Independent of direction of rotation
Stationary multiple springs
API682 arrangement 2 containment seal
Advantages
Dry contact secondary seal
Prevention of hazardous emissions
Can be used as a secondary seal of tandem seal in liquid applications
Sliding velocity: vg = 25 m/s (82 ft/s)
Materials
Seal face: Special carbon
Seat: Silicon carbide (Q1, Q2)
Secondary seals: FKM (V)
Metal parts: CrNiMo steel (G)
Standards and approvals
API 682 / ISO 21049
Recommended applications
Chemical industry
Refining technology