BT-ARP For a larger view, please mouseover the image.
For a larger view, please mouseover the image.
Item Description
1 Seal face housing
2 Stationary seat
3 Bellows
3a Gasket
4 Spring
5 Drive ring
5a Locking ring
5b L-ring
5c Collar
  • Rubber bellows mechanical seal
  • Independent of direction of rotation
  • Single spring, product-protected
  • Unbalanced
BT-ARP mechanical seals are the ideal solution for media which contain solids or are highly viscous. The spring is product-protected, thus preventing sticking or clogging. Reliable for rugged operation in all kind of applications such as waste water treatment. The dimensions can be adapted and additional seats are available. The bellows provides protection across the entire seal length.
Shaft diameter:
d1** = 20 … 40 mm (0.79" … 1.57")
Pressure: p1* = 6 bar (87 PSI)
t* = -20 °C … +90 °C (-4 °F … +194 °F)
Sliding velocity: vg = 10 m/s (33 ft/s)

* Dependent on medium, size and materials
** Other diameters upon request
Seal face*: Silicon carbide (Q1, Q6),
Tungsten carbide (U)
Seat: Silicon carbide (Q1, Q6, Q7),
Tungsten carbide (U)
NBR (P), FKM (V), HNBR (X4)
Metal parts:
CrNi steel 1.4301 (F), CrNiMo steel 1.4401 (G)

* Seal face available in solid or shrink fit/brazed version
  • Water and waste water technology
  • Slurry applications
  • Submersible pumps