Advantages
Mechanical seal for large-series cold water pumps, produced in millions of units per year. The BT-AR owes its success to the wide range of application, the short axial length (this allows for more economic pump construction and saves material), and the best quality/price ratio. The elasticity of the bellows design enables a more robust operation.
The BT-AR can also be used as a multiple seal in tandem or back-to-back arrangement when the product media cannot ensure lubrication, or when sealing media with a higher solids content. Installation proposals can be provided upon request.
Operating range
Shaft diameter: d1 = 6 … 70 mm (0.24" … 2.76")
Pressure: p1* = 6 bar (87 PSI),
vacuum … 0.5 bar (7.45 PSI) up to 1 bar (14.5 PSI) with seat locking
Temperature:
t* = -20 °C … +120 °C (-4 °F … +248 °F)
Sliding velocity: vg = 10 m/s (33 ft/s)
* Dependent on medium, size and material
Materials
Seal face:
Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B), Carbon graphite, full carbon (B3), Silicon carbide (Q1, Q6), Tungsten carbide (U), PTFE glass fiber reinforced (Y)
Seat:
Steatite (X), Aluminium oxide (V, V1), Silicon carbide (Q1, Q6, Q7), Tungsten carbide (U), Cr steel (E), CrNi steel (F), CrNiMo steel (G)
Elastomers:
NBR (P), EPDM (E), FKM (V), HNBR (X4)
Metal parts:
CrNi steel 1.4301 (F), CrNiMo steel 1.4401 (G), CrNi steel 1.4057 (F1)
Standards and approvals
KTW
W270
ACS
WRAS
NSF
DM 174/04
FDA
Recommended applications
Water and waste water technology
Pool and spa applications
Household appliances
Domestic and garden pumps
Whirlpool and swimming pool pumps
Dishwasher pumps
Submersible motors / pumps
Water pumps / waste water pumps
