BT-RN
BT-RN
| Item | Description |
| 1.1 | Seal face |
| 1.2 | O-ring |
| 1.3 | Spring |
| 2.1 | Seat |
| 2.2 | O-ring |
BT-RN
Features
- For plain shafts
- Single seal
- Unbalanced
- Conical spring rotating
- Dependent on direction of rotation
- Torque transmission via conical spring
Advantages
- Universal application opportunities
- Large choice of materials
- No shaft damage from set screws
- Dimensions can be adjusted and additional seats available
- Variants with shrink fitted face available
Materials
Seal face:
CrNi steel (F, F1), CrNiMo steel (G), Tungsten carbide (U), Silicon carbide (Q1)
Seat:
Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B), Tungsten carbide (U), Silicon carbide (Q1)
Elastomers:
NBR (P), EPDM (E), FKM (V), FFKM (K)
Metal parts:
CrNi steel 1.4301 (F), CrNiMo steel 1.4401 (G)
CrNi steel (F, F1), CrNiMo steel (G), Tungsten carbide (U), Silicon carbide (Q1)
Seat:
Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B), Tungsten carbide (U), Silicon carbide (Q1)
Elastomers:
NBR (P), EPDM (E), FKM (V), FFKM (K)
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!
- EN 12756
Recommended applications
- Water and wastewater technology
- Building services industry
- Chemical industry
- Food and Beverage industry
- Low solid content media
- Centrifugal pumps
- Cooling water pumps
- Clean water pumps
Notes
Alternative seat ring can be supplied with short tail or long tail with slot for pin (to prevent seat rotation).
Product variants
BT-RN4
Same items and designations as for BT-RN, but with shrink-fitted seal face into the seal face carrier.
Seal face:
Tungsten carbide (U), Silicon carbide (Q1)
Shaft diameter:
d1 = 16 … 80 mm (0.63" … 3.15"),
Same items and designations as for BT-RN, but with shrink-fitted seal face into the seal face carrier.
Seal face:
Tungsten carbide (U), Silicon carbide (Q1)
Shaft diameter:
d1 = 16 … 80 mm (0.63" … 3.15"),
| Item | Description |
| 1.1 | Seal face |
| 1.2 | O-ring |
| 1.3 | Spring |
| 2.1 | seat |
| 2.2 | O-Ring |
BT-RN.NU
Same items and designations as for BT-RN, but with installation length l1N according to EN 12756 (Normal, Unbalanced).
Same items and designations as for BT-RN, but with installation length l1N according to EN 12756 (Normal, Unbalanced).
| Item | Description |
| 1.1 | Seal face |
| 1.2 | O-ring |
| 1.3 | Spring |
| A | Spacer (upon request) |
| 2.1 | seat |
| 2.2 | O-Ring |
BT-RN.KU
Items and designations same as for BT-RN, but with installation length l1K according to EN 12756 (Short, Unbalanced).
Items and designations same as for BT-RN, but with installation length l1K according to EN 12756 (Short, Unbalanced).
| Item | Description |
| 1.1 | Seal face |
| 1.2 | O-ring |
| 1.3 | Spring |
| 2.1 | Seat |
| 2.2 | O-Ring |
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