BT-FN
BT-FN
| Item | Description |
| 1 | Seal face |
| 2 | Stationary seat |
| 3, 3a, 3b | O-Ring |
| 4 | Spring |
| 5 | Collar |
BT-FN
Features
- Single pusher-type seal
- Unbalanced
- Conical spring
- Dependent on direction of rotation
Advantages
The BT-FN combines a spring loaded ceramic seal face and the traditional pusher mechanical seals. The competitive price and the wide range of applications have made the BT-FN seal a success. The seal is produced with punched metal parts that allow an economical design.
BT-FN mechanical seals are also the ideal solution for light chemicals media applications. To ensure the best reliable performance, we recommend a material combination of hard material sliding faces and proper elastomer O-Rings.
BT-FN mechanical seals are also the ideal solution for light chemicals media applications. To ensure the best reliable performance, we recommend a material combination of hard material sliding faces and proper elastomer O-Rings.
Materials
Seal face:
Steatite (X), Aluminium oxide (V), Silicon carbide (Q1, Q6), Tungsten carbide (U1)
Seat:
Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B), Silicon carbide (Q1, Q6), Tungsten carbide (U1)
Elastomers:
NBR (P), EPDM (E), FKM (V), FFKM (K)
Metal parts: CrNi steel 1.4301 (F), CrNiMo steel 1.4401 (G)
Steatite (X), Aluminium oxide (V), Silicon carbide (Q1, Q6), Tungsten carbide (U1)
Seat:
Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B), Silicon carbide (Q1, Q6), Tungsten carbide (U1)
Elastomers:
NBR (P), EPDM (E), FKM (V), FFKM (K)
Metal parts: CrNi steel 1.4301 (F), CrNiMo steel 1.4401 (G)
Standards and approvals
- KTW
- W270
- ACS
- WRAS
- NSF
- FDA
- DM 174/04
Recommended applications
- Building services industry
- Household appliances
- Centrifugal pumps
- Clean water pumps
- Pumps for domestic applications and gardening
Notes
Seat ring of alternative seats can be supplied with short tail or with pin to block the seat and prevent seat rotation.
Product variants
BT-FN.NU / KU
BT-FN.NU has an installation length l1N and dimensions in accordance with EN 12756 (normal length, unbalanced).
BT-FN.KU has an installation length l1K and dimensions in accordance with EN 12756 (short length, unbalanced).
BT-FN.NU has an installation length l1N and dimensions in accordance with EN 12756 (normal length, unbalanced).
BT-FN.KU has an installation length l1K and dimensions in accordance with EN 12756 (short length, unbalanced).
| Item | Description |
| 1 | Seal face |
| 2 | Stationary seat |
| 3, 3a, 3b | O-Ring |
| 4 | Spring |
| 5 | Collar |
| A | Spacer (upon request) |
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