BT-FH
BT-FH
| Item | Description |
| 1 | Seal face |
| 2 | Stationary seat |
| 3, 3a, 3b | O-Ring |
| 4 | Spring |
| 5 | Collar |
BT-FH
Features
- Single pusher-type seal
- Unbalanced
- Conical spring
- Dependent on direction of rotation
Advantages
The BT-FH is a seal for demanding applications where operating conditions in the pump require machined metal parts for the mechanical seal. The seals are available in a full range of diameters from 10 to 100 mm and in the standard diameters specifically for chemical applications.
Materials
Seal face:
Aluminium oxide (V), Silicon carbide (Q1), Tungsten carbide (U1)
Seat:
Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B), Silicon carbide (Q1), Tungsten carbide (U1)
Elastomers:
NBR (P), EPDM (E), FKM (V), FFKM (K)
Metal parts: CrNiMo steel 1.4401 (G)
Aluminium oxide (V), Silicon carbide (Q1), Tungsten carbide (U1)
Seat:
Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B), Silicon carbide (Q1), Tungsten carbide (U1)
Elastomers:
NBR (P), EPDM (E), FKM (V), FFKM (K)
Metal parts: CrNiMo steel 1.4401 (G)
Standards and approvals
- KTW
- W270
- ACS
- WRAS
- NSF
- FDA
- DM 174/04
Recommended applications
- Chemical industry
- Building services industry
- Centrifugal pumps
- Clean water pumps
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-FH6
Like BT-FH but with PTFE secondary seal elements instead of elastomers. Mainly used in the chemical industry and for corrosive media.
Like BT-FH but with PTFE secondary seal elements instead of elastomers. Mainly used in the chemical industry and for corrosive media.
BT-FH.NU / KU
BT-FH.NU has an installation length l1N and seat dimensions in accordance with EN 12756 (normal length).
BT-FH.KU has an installation length l1K and seat dimensions in accordance with EN 12756 (short length).
BT-FH.NU has an installation length l1N and seat dimensions in accordance with EN 12756 (normal length).
BT-FH.KU has an installation length l1K and seat dimensions in accordance with EN 12756 (short length).
| Item | Description |
| 1 | Seal face |
| 2 | Stationary seat |
| 3, 3a, 3b | O-Ring |
| 4 | Spring |
| 5 | Collar |
| A | Spacer (upon request) |
BT-FHC
Like BT-FH but with shorter installation length (see l3C in the dimension table). The model BT-FHC has the same installation length as the BT-RN.
Like BT-FH but with shorter installation length (see l3C in the dimension table). The model BT-FHC has the same installation length as the BT-RN.
Similar products
BT-A2
- Rubber bellows mechanical seal
- Unbalanced
- Single spring
- Independent of direction of rotation
- Stationary design
BT-AR
- Rubber bellows mechanical seal
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- Single spring
- Independent of direction of rotation
- Short axial installation length
BT-ARP
- Rubber bellows mechanical seal
- Independent of direction of rotation
- Single spring, product-protected
- Unbalanced