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Ningbo Topbon Mechanical Seals Factory

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Mechanical Seal TB891 Replace Burgmann and John Crane

Mechanical Seal TB891 Replace Burgmann and John Crane
Mechanical Seal TB891 Replace Burgmann and John CraneMechanical Seal TB891 Replace Burgmann and John CraneMechanical Seal TB891 Replace Burgmann and John CraneMechanical Seal TB891 Replace Burgmann and John Crane
group name
Multi Spring Mechanical Seal
Min Order
1 piece
brand name
TOPBON Mechanical Seal Manufacturer
model
TB891
payment method
T/T
update time
Sat, 01 Nov 2025 05:20:48 GMT
contact supplier

Paramtents

  • Temperature -20℃-180℃

  • Speed ≦15m/s

  • Pressure ≦2.5MPA

  • Rotary Ring Material CAR/SIC/TC

  • Stationary Ring Material CER/SIC/TC

  • O-Ring Material VIT/NBR/EPDM

  • Spring & Metal Parts SUS304/SUS316

  • Application Clean Water，Sewage Water，Oil

Packging & Delivery

  • Min Order1 piece

Briefing

TB891 Mechanical Seal
Replace Burgmann and John Crane mechanical seal

Detailed

Product Introduction 
Product Size
Product Details
Product Model
Mechanical seal TB891 
Replace Burgmann and John Crane
Operational Conditions:
Temperature：-20℃ to +180℃
Pressure： ≤2.5MPa
Speed： ≤15m/s

Materials:
Stationary Ring: Silicon Carbide, TC, Carbon
Rotary Ring: Silicon Carbide, Ceramic, TC
Secondary Seal: NBR, EPDM, Viton
Spring and Metal Parts: SUS304,SUS316 
Applications:
Clean water,
sewage water
oil and other moderately corrosive fluids
Stationary Seat:
Standard:
Alternative: 
Product details
SIZE
Size/
Metric
d
D5
D6
D3
L1
Size/
Inch
d
D5
D6
D3
25
25
37.5
32.5
39.3
34.9
1.000
25.4
37.5
32.5
39.3
28
28
40
35
42.3
34.9
1.125
28.5
40
35
42.3
30
30
42
37
44.5
34.9
1.250
31.7
44.5
39
46
32
32
44.5
39
46.0
44.4
1.375
34.9
47.5
42
49
33
33
45.5
40
47.5
44.4
1.500
38.1
50.5
45
52.5
35
35
47.5
42
49.0
44.4
1.625
41.2
55
49
57.2
38
38
50.5
45
52.5
44.4
1.750
44.4
58
52
60.3
40
40
53
47
55.6
44.4
1.875
47.6
61
55
63.5
42
42
56
50
58.7
44.4
2.000
50.8
63.5
57.6
66.7
43
43
56
50
58.7
44.4
2.125
53.9
67.8
61.8
69.8
45
45
58
52
60.3
44.4
2.250
57.1
70.8
64.8
73
48
48
61
55
63.5
44.4
2.375
60.3
73.5
67.5
76.2
50
50
63.6
57.6
66.7
44.4
2.500
63.5
76.5
70.5
79.4
53
53
67.8
61.8
69.8
44.4
2.625
66.6
79.5
73.5
82.6
55
55
67.8
61.8
69.8
44.4
2.750
69.8
86.4
76.9
85.7
58
58
70.8
64.8
73.0
44.4
2.875
73.0
88.4
79.9
88.9
60
60
73.5
67.5
76.2
44.4
3.000
76.2
90.4
83.9
96.8
63
63
76.5
70.5
79.4
44.4
3.125
79.3
94.2
87.7
100
65
65
79.5
73.5
82.6
44.4
3.250
82.5
97.3
90.3
103.2
70
70
83.4
76.9
85.7
44.4
3.375
85.7
100.3
93.3
106.4
75
75
90.4
83.9
96.8
44.4
3.500
88.9
104.9
97.4
109.5
80
80
94.2
87.7
100.0
44.4
3.625
92.0
106.9
99.4
112.7
85
85
100.3
93.3
106.4
44.4
3.750
95.2
110.5
102.5
115.9
90
90
104.9
97.4
109.5
44.4
3.875
98.4
113.7
105.7
119
95
95
110.5
102.5
115.9
44.4
4.000
101.6
116.9
108.9
122.2
100
100
116.9
108.9
122.2
44.4

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