Type 1678
Stepped shaft balanced seal, otherwise similar to our Types 1677M/1677. All our 1677/8 versions are energised by a special continuous wave spring with no weld spots. Supplied as Monolithic version 1678M, as standard. The inserted version is also available to production order.


Metric Shaft Size D
Stat Size d
D1
D2
D3
L1
L2
L1K
0180
14
25.00
21.00
32.00
32.50
10.00
42.50
0200
16
27.00
23.00
34.00
32.50
10.00
42.50
0220
18
33.00
27.00
36.00
33.50
11.50
45.00
0240
20
35.00
29.00
38.00
33.50
11.50
45.00
0280
24
39.00
33.00
42.00
36.00
11.50
47.50
0300
25
40.00
34.00
44.00
36.00
11.50
47.50
0330
28
43.00
37.00
47.00
38.50
11.50
50.00
0350
30
45.00
39.00
49.00
38.50
11.50
50.00
0380
33
48.00
42.00
54.00
38.50
11.50
50.00
0400
35
50.00
44.00
56.00
38.50
11.50
50.00
0430
38
56.00
49.00
59.00
38.50
14.00
52.50
0450
40
58.00
51.00
61.00
38.50
14.00
52.50
0500
45
63.00
56.00
66.00
38.50
14.00
52.50
0530
48
66.00
59.00
69.00
38.50
14.00
52.50
0550
50
70.00
62.00
71.00
42.50
15.00
57.50
0600
55
75.00
67.00
80.00
42.50
15.00
57.50


Maximum Operating Limits
PRESSURE 280psi
SPEED 20m/s
TEMPERATURE -40 +200 C