Operating range
Shaft diameter: d1 = 25 … 80 mm (1″ … 3.15″)
Temperature: t* = -40 °C … +220 °C (-40 °F … +428 °F)
Pressure: p = 25 bar (363 PSI)
Sliding velocity: vg = 20 m/s (66 ft/s)

Materials
Seal face: Carbon graphite antimony impregnated
(A), Silicon carbide (Q1)
Seat: Silicon carbide (Q1)
Secondary seals: FKM (V), EPDM (E), FFKM (K)
Bellows: Inconel® 718 (M6)
Metal parts: CrNiMo steel (G), Duplex (G1)
Throttle ring: PTFE carbon graphite reinforced
(T12)
Lip seal: NBR (P), PTFE carbon reinforced (T3)

Features
Single seal
Cartridge
Balanced
Independent of direction of rotation
Metal bellows
Single seal with quench and lip seal (- QN) or throttle ring
(-TN)
Version available with multipoint injection ring (-QNM, –
TNM)
Supply connections for flush (A) and quench (B)

Advantages
Ideal seal for standardizations
Universal applicable for packings conversions,
retrofits or OEM
No dimensional modification of the seal chamber
necessary, small radial installation height
Trouble-free running due to bellows unit with
vibration dampers (essential in case of dryrunning)
No dynamically loaded O-Ring
Self cleaning effect of the bellows
Straightforward and easy installation due to preassembled unit (reduced downtimes)