Mechanical Seal TB685 replace Burgmann MFL85N
Mechanical Seal TB685 replace Burgmann MFL85N
Mechanical Seal TB685 replace Burgmann MFL85N
Mechanical Seal TB685 replace Burgmann MFL85N
Mechanical Seal TB685 replace Burgmann MFL85N

Mechanical Seal TB685 replace Burgmann MFL85N

Model
TB685

Item specifics

Temperature
-20℃-200℃
Speed
≦23m/s
Pressure
≦2.1MPA
Stationary Seat
TBG9
Rotary Ring Material
CAR/SIC/TC
Stationary Ring Material
CER/SIC/TC
O-Ring Material
VIT, Encasulated Ring, EPDM
Spring & Metal Parts
SUS304/SUS316
Application
Clean Water，Sewage Water，Oil

Review

Description

Product Introduction 
Product Size
Product Details
Product Model
Mechanical seal TB685 
Replacement to:
Burgmann MFL85N

Operational Conditions:
Temperature: -20℃ to +200℃
Pressure: ≤2.1MPa
Speed: ≤23m/s

Materials:
Stationary Ring: Silicon Carbide, TC, Cer
Rotary Ring: Silicon Carbide, Car, TC
Secondary Seal: VIT, Encasulated Ring, EPDM
Spring and Metal Parts: SUS304,SUS316 
Applications:
Clean water,
sewage water
oil and other moderately corrosive fluids
Stationary Seat:
Standard: TBG9
Alternative:
Product details
SIZE
Size/
Metric
d
D3
D2
L3
L1
16
16
30.00
27.0
10.0
32.5
18
18
32.00
33.0
11.5
30.5
20
20
33.50
35.0
11.5
30.5
22
22
36.50
37.0
11.5
30.5
24
24
39.00
39.0
11.5
28.5
25
25
39.60
40.0
11.5
28.5
28
28
42.80
43.0
11.5
31.0
30
30
45.00
45.0
11.5
31.0
32
32
46.00
48.0
11.5
31.0
33
33
48.00
48.0
11.5
31.0
35
35
49.20
50.0
11.5
31.0
38
38
52.30
56.0
14.0
31.0
40
40
55.50
58.0
14.0
31.0
43
43
57.50
61.0
14.0
31.0
45
45
58.70
63.0
14.0
31.0
48
48
61.90
66.0
14.0
31.0
50
50
65.00
70.0
15.0
32.5
53
53
68.20
73.0
15.0
32.5
55
55
70.00
75.0
15.0
32.5
58
58
71.70
78.0
15.0
37.5
60
60
74.60
80.0
15.0
37.5
63
63
79.00
83.0
15.0
37.5
65
65
84.10
85.0
15.0
37.5
68
68
87.30
90.0
18.0
34.5
70
70
87.30
92.0
18.0
42.0
75
75
95.00
97.0
18.0
42.0
80
80
98.40
105.0
18.2
41.8
85
85
104.70
110.0
18.2
41.8
90
90
111.00
115.0
18.2
46.8
95
95
114.00
120.0
17.2
47.8
100
100
117.40
125.0
17.2
47.8

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