Advantages
The BT-PN is a large series mechanical seal with a simple yet effective design that is easy to assemble. The special spring arrangement allows a short axial installation length. This advantage is combined with an increased working pressure capability of up to 12 bar (174 PSI). The spring is free from torque transmission.
Operating range
Shaft diameter:
d1* = 8 … 40 mm (0.31" … 1.57")
Pressure: p1** = 12 bar (174 PSI),
vacuum … 0.5 bar (7.45 PSI)
Temperature:
t** = -20 °C … +120 °C (-4 °F … +248 °F)
Sliding velocity: vg = 10 m/s (33 ft/s)
Operating limits depend on p・vg factor
* Other diameters upon request
** Dependent on medium, size and material
Materials
Seal face:
Carbon graphite antimony impregnated (A),
Carbon graphite resin impregnated (B), Silicon carbide (Q1, Q6)
Seat:
Aluminium oxide (V), Steatite (X), Silicon carbide (Q1, Q6, Q7)
Elastomers:
NBR (P), FKM (V), EPDM (E)
Metal parts: CrNi steel 1.4301 (F), CrNiMo steel 1.4401 (G)
