Mechanical Seal TB1A replace John Crane 1A
Mechanical Seal TB1A replace John Crane 1A
Mechanical Seal TB1A replace John Crane 1A
Mechanical Seal TB1A replace John Crane 1A
Mechanical Seal TB1A replace John Crane 1A

Mechanical Seal TB1A replace John Crane 1A

Model
TB1A

Item specifics

Temperature
-20℃-120℃
Speed
≦15m/s
Pressure
≦1.4MPA
Stationary Seat
TBCT20-1
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

Review

Description

Product Introduction 
Product Size
Product Details
Product Model
Mechanical seal TB1A 
Replacement to:
John Crane 1A
Operational Conditions:
Temperature: -20℃ to +120℃
Pressure: ≤1.4MPa
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: TBCT20-1
Alternative:
Product details
SIZE
Size/
Inch
d
D3
D2
D1
L1
L2
Size/
Metric
d
D3
L1
0.375
9.5
22
11.0
24.60
44
8.7
14
14
29
44
0.500
12.7
25
13.5
27.80
44
8.7
16
16
29
44
0.625
15.8
29
17.0
30.95
44
10.3
18
18
32
44
0.750
19.0
32
20.0
34.15
44
10.3
19
19
32
44
0.813
20.6
33
21.5
35.70
44
10.3
20
20
33
44
0.875
22.2
35
23.0
37.30
44
10.3
24
24
38
44
1.000
25.4
38
26.5
40.50
44
10.3
25
25
38
44
1.125
28.5
46
29.5
47.65
60
11.9
27
27
46
60
1.250
31.7
49
32.5
50.80
60
11.9
28
28
46
60
1.375
34.9
52
36.5
54.00
60
11.9
29
29
46
60
1.500
38.1
56
39.5
57.15
60
11.9
30
30
49
60
1.625
41.2
59
42.5
60.35
60
11.9
32
32
49
60
1.750
44.4
62
46.0
63.50
71
11.9
34
34
52
60
1.875
47.6
65
49.0
66.70
71
11.9
35
35
52
60
2.000
50.8
68
52.0
69.85
71
13.5
38
38
56
60
2.215
53.9
71
55.5
73.50
71
13.5
40
40
59
60
2.250
57.1
75
58.5
76.20
71
13.5
42
42
62
71
2.375
60.3
78
61.5
79.40
71
13.5
45
45
62
71
2.500
63.5
81
65.0
82.55
71
13.5
48
48
65
71
2.625
66.6
86
68.0
92.10
70
15.9
50
50
68
71
2.750
69.8
89
71.0
95.25
70
15.9
54
54
71
71
2.875
73.0
92
74.5
98.45
73
15.9
55
55
75
71
3.000
76.2
95
77.5
101.60
73
15.9
60
60
78
71
3.125
79.3
102
80.5
111.15
79
19.9
65
65
86
70
3.250
82.5
105
84.0
114.30
79
19.9
70
70
89
70
3.375
85.7
108
87.0
117.50
79
19.9
73
73
92
73
3.500
88.9
111
90.5
120.65
79
19.9
75
75
95
73
3.625
92.0
114
93.5
123.85
83
19.9
80
80
105
79
3.375
95.2
117
96.5
127.00
83
19.9
90
90
114
83
3.875
98.4
121
100.0
130.20
86
19.9
95
95
118
83
4.000
101.6
124
103.0
133.35
86
19.9
100
100
124
86

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