Burgmann BT-AR Mechanical Seal Company
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.
Product Description
| BT-AR |
| 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. |
| Features |
| •Rubber bellows mechanical seal |
| •Unbalanced |
| •Single spring |
| •Independent of direction of rotation |
| •Short axial installation length |
| Operating range (see note on page 1) |
| 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) |
| 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 |
| BT-AR3 |
| Seal faces with brazed tungsten carbide (U) for abrasive media. Elastomers and diameter range the same as BT-AR. The BT-AR3 is the right choice of seal for use in high duty applications or when abrasives (e.g. waste water) could damage the seal faces. |
