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-RN3
Product variant with seal faces made of brazed tungsten carbide which is suitable for media with medium corrosive and abrasive characteristics.
Product variant with seal faces made of brazed tungsten carbide which is suitable for media with medium corrosive and abrasive characteristics.
| Item | Description |
| 1 | Seal face housing |
| 1a | Brazed seal face |
| 2 | Stationary seat housing |
| 2a | Brazed stationary seat |
| 3, 3a | O-Ring |
| 4 | Spring |
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/td> |
| 1.3 | Spring |
| 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 |
BT-RN.NU / KU
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 |
| 2.1 | Seat |
| 2.2 | O-ring |
Similar products
BT-A2
- Unbalanced
- Single spring
- Independent of direction of rotation
- Stationary spring-loaded unit
BT-AR
- Rubber bellows mechanical seal
- Unbalanced
- 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