BT-RN Balanced
BT-RN Balanced
| Item | Description |
| 1 | Seal face |
| 2 | Stationary seat |
| 3, 3a | O-Ring |
| 4 | Spring |
| A | Spacer (upon request) |
BT-RN.NB has an installation length l1N in accordance with EN 12756 (normal length).
BT-RN.KB has an installation length l1K in accordance with EN 12756 (short length).
BT-RN Balanced
Features
- Single pusher-type seal
- Balanced
- Conical spring
- Dependent on direction of rotation
- Short length (KB)
- Normal length (NB)
Advantages
The BT-RN.NB/KB represents a traditional pusher seal and is the balanced version of a BT-RN.
Designed for high pressure fluids, it is made from the same material range as the BT-RN.
The main characteristic is a short design combined with an economical seal solution.
Length and dimensions according to EN 12756 (RN.NB normal length, RN.KB short length).
Materials
Seal face:
CrNi steel 1.4057 (F1), CrNiMo steel 1.4401 (G), Tungsten carbide (U)
Seat:
Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B), Tungsten carbide (U) Elastomers: NBR (P), EPDM (E), FKM (V), FFKM (V)
Metal parts: CrNiMo steel (G), CrNi steel (F, F1)
CrNi steel 1.4057 (F1), CrNiMo steel 1.4401 (G), Tungsten carbide (U)
Seat:
Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B), Tungsten carbide (U) Elastomers: NBR (P), EPDM (E), FKM (V), FFKM (V)
Metal parts: CrNiMo steel (G), CrNi steel (F, F1)
Standards and approvals
- KTW
- W270
- ACS
- WRAS
- NSF
- FDA
- DM 174/04
Recommended applications
- Building services industry
- Chemical 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-RN3.NB / KB
Seal faces made of brazed tungsten carbide which is suitable for media with medium corrosive and abrasive characteristics.
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 |
| A | Spacer (upon request) |
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