长度mm
直径mm
环直径mm
货号
8
3
4
137404
12
4.5
6
137405
15
137410
20
137415
25
7
137420
30
7.5
137425
35
137427
40
8.5
137430
45
10
137432
50
11
137435
60
137437
70
137445