鹰堡
14
BT-RN (Balanced version)
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
作为BT-RN。主要特征是一个简短的设计
combined with an economical seal solution. Length and
dimensions according to EN 12756 (RN.NB normal length,
RN.KB短长度）。
Features
• Single pusher-type seal
• Balanced
•圆锥形弹簧
• Dependent on direction of rotation
• Short length (KB)
• Normal length (NB)
Operating range
（请参阅第28页的注释）
Shaft diameter: d1 = 10 … 100 mm (0.39" … 3.94")
Pressure: p
1
* = 25 (40) bar (363 (580) PSI)
温度：T* = -35°C…+180°C（-31°F…+292°F）
Sliding velocity: v
g
= 15 m/s (49 ft/s)
*取决于中等，大小和材料
斜纹布ls
(see fold-out page 28)
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 (K)
Metal parts: CrNiMo steel (G), CrNi steel (F, F1)
Recommended applications
• Chemical industry
•建筑服务行业
•离心泵
• Clean water pumps
Item
Description
1
Seal face
2
Stationary seat
3, 3a
O-Ring
4
Spring
A
垫片（应要求）
BT-RN.NB具有安装长度L
1N
按照
EN 12756 (normal length).
BT-RN.KB has an installation length l
1K
按照
EN 12756 (short length).
Certificates
•KTW
• W270
•ACS
• WRAS
• NSF
• FDA
•DM 174/04
d
3
d
6
H11
d
4 min
d
1
d
2
h6
d
7
H8
l
5
l
6
l
4
l
3
3a
X
A
l
1
NB (l
1
KB）
±0,5
l
1
±0,5
3
1
2
4
20°
r/l
l
7
+0,5
3
H
l
2
±0,5
X
10°
R1,6
bt-rn3.nb / rn3.kb
Seal faces made of brazed tungsten carbide which is
suitable for media with medium corrosive and abrasive
characteristics.
Product variants
d
3
d
6
H11
d
4 min
d
1
d
2
h6
d
7
H8
l
5
l
6
l
4
l
3
3a
X
A
l
1
NB (l
1
KB）
±0,5
l
1
±0,5
3
1
1a
2a
2
4
20°
r/l
l
7
+0,5
3
H
l
2
±0,5
X
10°
R1,6
1
Seal face housing
1a
悬挂的密封脸
2
Stationary seat housing
2a
Brazed stationary seat
3, 3a
O-Ring
4
Spring
A
垫片（应要求）