BT-RN
BT-RN
| Item | Description |
| 1 | Seal face |
| 2 | Stationary seat |
| 3, 3a | O-Ring |
| 4 | Spring |
BT-RN
Features
- Single pusher-type seal
- Unbalanced
- Conical spring
- Dependent on direction of rotation
Advantages
The BT-RN represents the traditionally designed robust pusher seal. This type of mechanical seal is easy to install and covers a wide range of applications; its reliability has been proven by millions of units in worldwide operation. It is a convenient solution for the widest range of applications: for clean water as well as chemical media.
Materials
Seal face:
CrNi steel (F, F1), CrNiMo steel (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 (K)
Metal parts: CrNi steel 1.4301 (F), CrNiMo steel 1.4401 (G)
CrNi steel (F, F1), CrNiMo steel (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 (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
- 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-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
Product variant with SiC seal face shrink-fitted into the seal face carrier.
Product variant with SiC seal face shrink-fitted into the seal face carrier.
| Item | Description |
| 1 | Seal face housing |
| 1a | Shrink fitted seal face |
| 2 | Stationary seat housing |
| 2a | Shrink fitted stationary seat |
| 3, 3a | O-Ring |
| 4 | Spring |
BT-RN6
Product variant with PTFE secondary seal elements instead of elastomers. Mainly used in the chemical industry and for corrosive media.
Product variant with PTFE secondary seal elements instead of elastomers. Mainly used in the chemical industry and for corrosive media.
| Item | Description |
| 1 | Seal face |
| 2 | Stationary seat |
| 3 | Wedge gasket (PTFE) |
| 3a | Gasket (PTFE) |
| 4 | Spring |
| 5 | Ring |
BT-RN.NU / KU
Like the BT-RN/-RN3, but with dimensions in accordance with EN 12756.
BT-RN.NU has an installation length l1N and seat dimensions in accordance with EN 12756 (normal length).
BT-RN.KU has an installation length l1K and seat dimensions in accordance with EN 12756 (short length).
Like the BT-RN/-RN3, but with dimensions in accordance with EN 12756.
BT-RN.NU has an installation length l1N and seat dimensions in accordance with EN 12756 (normal length).
BT-RN.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 | O-Ring |
| 4 | Spring |
| A | Spacer (upon request) |
Similar products
BT-A2
- Rubber bellows mechanical seal
- Unbalanced
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- Independent of direction of rotation
- Stationary design
BT-AR
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BT-ARP
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