Click image to enlarge
| Item | Description |
|---|---|
| 1.1 | Seal face |
| 2.1 | Stationary seat |
| 1.2 | Bellows |
| 1.3 | Collar |
| 1.4 | Drive ring |
| 1.5 | Spring |
| 1.6 | Ring |
| 2.2 | Collar |
BT-PN
Features
- Single and dual seal
- For plain shafts
- Elastomer bellows rotating
- Unbalanced
- Independent of direction of rotation
Advantages
- No torsion on bellow and spring
- Universal application opportunities
- Suitable design for high volume seal
- Individual adaptation to pumps design possible
- Customized installation length can be achieved
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)
* 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)
Seat:
Al-Oxide (V, V1), Silicon carbide (Q1, Q6, Q7)
Elastomers:
NBR (P), EPDM (E), FKM (V)
Metal parts:
CrNi steel 1.4301 (F), CrNiMo steel 1.4401 (G)
Standards and approvals
- Various material approvals e.g. WRAS, UBA, ACS, NSF, FDA available (depending on type and material combinations). Please inquire!
Recommended applications
- Water and wastewater technology
- Food and beverage industry
- Media with low solids content
- Submersible pumps (e.g. back-to-back arrangement)
- Submersible oil filled motors (4" / 6")
- Circulating pumps
- Rotary vane pumps (e.g. coffee machines)
- Shower pumps
- Domestic appliances
Product variants
BT-PN and PNLas double seal
(back-to-back arrangement)
Items and designations same as for BT-PN. This is a double seal in a back to back arrangement with a BT-PN or BT-PNL base.
Therefore, this seal combines the advantages of the PN/PNL with the advantage of a dual seal.
Individual installation dimensions and lengths can be supplied upon request.
In this configuration, the operating pressure (product side seal) must be limited to max.
2 bar (29 PSI).
For specific application or operation limits, please inquire!
Item Description
1.1, 1.6 Seal face
2.1, 3.1 Stationary seat
1.2 Bellows
1.3 Collar
1.4 Drive ring
1.5 Spring
2.2, 3.2 Collar
BT-PNL
Items and designations same as for BT-PN, but with a smaller outer diameter (d3).
Item Description
1.1 Seal face
2.1 Stationary seat
1.2 Bellows
1.3 Collar
1.4 Drive ring
1.5 Spring
1.6 Ring
2.2 Collar
