Type 4 Mechanical Seal
Constructive characteristics
| ✓ |
Component / Cartridge |
| ✓ |
Balanced / Unbalanced |
| ✓ |
Secundary seals in o´ring |
| ✓ |
Multiple Springs |
| ✓ |
Bi-directional |
Type 4 Mechanical Seal
Operational Conditions
| Shaft Diameters |
(mm) |
(Inch) |
| 16,00 ~ 150,00 |
0,625 ~ 6,000 |
| Temperature |
(Celsius degree) |
(Fahrenheit) |
| -20,00 ~ 180,00 |
-4,00 ~ 356,00 |
| Pressure |
Maximum (BAR) |
Maximum (PSI) |
| 25,00 |
362,60 |
| Maximum sliding velocity (Vg) |
| Seal face |
Stationary Seat |
Vg (m/s) |
Vg (fp/s) |
| Q1 |
A |
20 |
65,6 |
| Q1 |
B |
20 |
65,6 |
| Q2 |
A |
20 |
65,6 |
| Q2 |
B |
20 |
65,6 |
| V |
B |
20 |
65,6 |
| Q1 |
Q1 |
15 |
49,2 |
| Q2 |
Q2 |
15 |
49,2 |
| Q1 |
U2 |
15 |
49,2 |
| Q2 |
U2 |
15 |
49,2 |
| U2 |
U2 |
15 |
49,2 |
Type 4 Mechanical Seal
Materials
| Seal face material (DIN 12756) |
| V |
Aluminium oxide |
| Q1 |
SiC, silicon carbide, sintered pressureless |
| Q2 |
SiC-Si, reaction bonded |
| U2 |
Tungsten carbides, Ni-bonded |
| Stationary seat material (DIN 12756) |
| A |
Carbon, metal-impregnated |
| B |
Carbon, resin-impregnated |
| Q1 |
SiC, silicon carbide, sintered pressureless |
| Q2 |
SiC-Si, reaction bonded |
| U2 |
Tungsten carbides, Ni-bonded |
| Secundary seals (DIN 12756) |
| V |
Fluoro rubber (FPM) |
| E |
Ethylene propylene rubber (EPPM) |
| P |
Nitrile rubber (NBR) |
| K |
Perfluorocarbon rubber |
| T |
Other elastomers |
| Springs (DIN 12756) |
| G |
CrNiMo steel |
| M |
High-nickel alloy |
| Metal Parts (DIN 12756) |
| F |
CrNi steel |
| G |
CrNiMo steel |
| T |
Other Metals |
Type 4 Mechanical Seal
Dimensional
| dn |
d1 |
D2 |
D3 |
L1 |
L3 |
| 15,87 |
30,00 |
31,75 |
26,00 |
34,00 |
20,00 |
| 16,00 |
30,00 |
31,75 |
26,00 |
34,00 |
20,00 |
| 19,05 |
32,80 |
34,92 |
29,20 |
36,50 |
20,00 |
| 20,00 |
34,00 |
36,00 |
30,00 |
34,50 |
20,00 |
| 22,22 |
36,00 |
38,10 |
32,25 |
34,50 |
20,70 |
| 23,00 |
37,00 |
39,00 |
33,00 |
34,50 |
21,00 |
| 24,00 |
38,00 |
40,00 |
34,20 |
35,00 |
20,70 |
| 25,00 |
39,00 |
40,00 |
34,20 |
36,50 |
20,70 |
| 25,40 |
39,50 |
41,27 |
35,50 |
36,50 |
20,70 |
| 28,00 |
43,20 |
44,45 |
35,50 |
38,50 |
21,20 |
| 28,57 |
43,20 |
44,45 |
38,60 |
38,50 |
20,50 |
| 29,00 |
43,20 |
44,44 |
38,70 |
38,50 |
20,50 |
| 30,00 |
45,00 |
44,44 |
38,70 |
39,00 |
21,20 |
| 31,75 |
46,00 |
50,80 |
41,80 |
39,00 |
21,20 |
| 32,00 |
46,00 |
50,80 |
41,80 |
39,00 |
21,20 |
| 34,92 |
49,50 |
50,80 |
44,90 |
39,00 |
17,40 |
| 35,00 |
49,50 |
53,97 |
44,90 |
39,00 |
19,40 |
| 38,10 |
52,50 |
57,15 |
48,10 |
39,00 |
21,30 |
| 40,00 |
56,00 |
60,32 |
52,60 |
39,00 |
20,50 |
| 41,27 |
58,70 |
60,32 |
51,30 |
42,00 |
21,00 |
| 44,45 |
61,30 |
63,50 |
54,70 |
42,00 |
19,00 |
| 45,00 |
61,00 |
63,32 |
54,50 |
42,00 |
19,00 |
| 47,62 |
65,00 |
66,67 |
57,70 |
42,00 |
21,00 |
| 48,00 |
65,00 |
66,67 |
57,70 |
44,00 |
21,00 |
| 50,00 |
67,70 |
69,85 |
60,50 |
44,00 |
21,00 |
| 50,80 |
67,70 |
69,85 |
60,80 |
44,00 |
21,00 |
| 53,97 |
71,00 |
73,02 |
64,00 |
44,00 |
21,20 |
| 55,00 |
71,50 |
73,02 |
64,00 |
44,00 |
21,20 |
| 57,15 |
75,00 |
76,20 |
67,20 |
44,00 |
20,50 |
| 60,00 |
80,00 |
82,55 |
75,67 |
44,00 |
19,60 |
| 60,32 |
80,00 |
79,38 |
70,50 |
44,00 |
19,20 |
| 63,50 |
81,00 |
82,55 |
73,60 |
44,00 |
19,20 |
| 65,00 |
85,00 |
85,73 |
76,60 |
44,00 |
19,20 |
| 66,67 |
85,00 |
85,73 |
76,60 |
44,00 |
19,20 |
| 69,85 |
87,30 |
88,90 |
79,90 |
44,00 |
20,50 |
| 70,00 |
87,30 |
95,25 |
86,30 |
44,00 |
21,10 |
| 73,07 |
89,00 |
95,25 |
86,30 |
44,00 |
21,10 |
| 75,00 |
89,00 |
95,25 |
86,30 |
44,00 |
19,20 |
| 76,20 |
93,80 |
95,25 |
86,30 |
44,00 |
19,20 |
| 79,30 |
101,00 |
101,00 |
91,60 |
44,00 |
21,30 |
| 80,00 |
101,00 |
101,00 |
91,60 |
44,00 |
21,30 |
| 82,55 |
103,00 |
101,60 |
92,08 |
44,00 |
21,30 |
| 85,00 |
105,00 |
109,60 |
96,50 |
44,00 |
22,80 |
| dn |
d1 |
D2 |
D3 |
L2 |
L3 |
| 15,87 |
30,00 |
31,75 |
26,00 |
52,10 |
20,00 |
| 16,00 |
30,00 |
31,75 |
26,00 |
52,10 |
20,00 |
| 19,05 |
32,80 |
34,92 |
29,20 |
56,10 |
20,00 |
| 20,00 |
34,00 |
36,00 |
30,00 |
53,10 |
20,00 |
| 22,22 |
36,00 |
38,10 |
32,25 |
53,10 |
20,70 |
| 23,00 |
37,00 |
39,00 |
33,00 |
53,10 |
21,00 |
| 24,00 |
38,00 |
40,00 |
34,20 |
53,10 |
20,70 |
| 25,00 |
39,00 |
40,00 |
34,20 |
54,10 |
20,70 |
| 25,40 |
39,50 |
41,27 |
35,50 |
53,10 |
20,70 |
| 28,00 |
43,20 |
44,45 |
35,50 |
61,10 |
21,20 |
| 28,57 |
43,20 |
44,45 |
38,60 |
61,10 |
20,50 |
| 29,00 |
43,20 |
44,44 |
38,70 |
61,10 |
20,50 |
| 30,00 |
45,00 |
44,44 |
38,70 |
61,10 |
21,20 |
| 31,75 |
46,00 |
50,80 |
41,80 |
61,10 |
21,20 |
| 32,00 |
46,00 |
50,80 |
41,80 |
61,10 |
21,20 |
| 34,92 |
49,50 |
50,80 |
44,90 |
61,10 |
17,40 |
| 35,00 |
49,50 |
53,97 |
44,90 |
61,10 |
19,40 |
| 38,10 |
52,50 |
57,15 |
48,10 |
67,10 |
21,30 |
| 40,00 |
56,00 |
60,32 |
52,60 |
67,10 |
20,50 |
| 41,27 |
58,70 |
60,32 |
51,30 |
67,10 |
21,00 |
| 44,45 |
61,30 |
63,50 |
54,70 |
67,10 |
19,00 |
| 45,00 |
61,00 |
63,32 |
54,50 |
67,10 |
19,00 |
| 47,62 |
65,00 |
66,67 |
57,70 |
67,10 |
21,00 |
| 48,00 |
65,00 |
66,67 |
57,70 |
67,10 |
21,00 |
| 50,00 |
67,70 |
69,85 |
60,50 |
67,10 |
21,00 |
| 50,80 |
67,70 |
69,85 |
60,80 |
67,10 |
21,00 |
| 53,97 |
71,00 |
73,02 |
64,00 |
67,10 |
21,20 |
| 55,00 |
71,50 |
73,02 |
64,00 |
67,10 |
21,20 |
| 57,15 |
75,00 |
76,20 |
67,20 |
67,10 |
20,50 |
| 60,00 |
80,00 |
82,55 |
75,67 |
67,10 |
19,60 |
| 60,32 |
80,00 |
79,38 |
70,50 |
68,10 |
19,20 |
| 63,50 |
81,00 |
82,55 |
73,60 |
68,10 |
19,20 |
| 65,00 |
85,00 |
85,73 |
76,60 |
68,10 |
19,20 |
| 66,67 |
85,00 |
85,73 |
76,60 |
68,10 |
19,20 |
| 69,85 |
87,30 |
88,90 |
79,90 |
68,10 |
20,50 |
| 70,00 |
87,30 |
95,25 |
86,30 |
68,10 |
21,10 |
| 73,07 |
89,00 |
95,25 |
86,30 |
68,10 |
21,10 |
| 75,00 |
89,00 |
95,25 |
86,30 |
68,10 |
19,20 |
| 76,20 |
93,80 |
95,25 |
86,30 |
68,10 |
19,20 |
| 79,30 |
101,00 |
101,00 |
91,60 |
68,10 |
21,30 |
| 80,00 |
101,00 |
101,00 |
91,60 |
68,10 |
21,30 |
| 82,55 |
103,00 |
101,60 |
92,08 |
68,10 |
21,30 |
| 85,00 |
105,00 |
109,60 |
96,50 |
68,10 |
22,80 |
Type 4 Mechanical Seal
Images
