JIS B2401-S Series O-Rings (Rotary seal )
The JIS B2401-S series represents the Small (S) series in the Japanese Industrial Standards, ideal for compact and precision sealing requirements where space is limited and performance is critical.
Key Features
- Conforms to the JIS B2401 Small (S) series standard
- High-precision dimensions suited for Japanese equipment
- Excellent sealing performance in small assemblies
- Ideal for electronics, precision instruments, and automotive applications
Application
Automated Industrial Equipment
Manual and Pneumatic Tools
Packaging Industry
Toy Industry — Model Car Tires
Food and Beverage Industry
Home Appliance Industry
Sporting Goods Industry
Building Industry
Agricultural Industry
Piping and Drainage Systems
Semiconductor Industry
New Energy Technology Industry
Electronics Industry
Military Industry
Automotive Industry
Aviation Industry
Marine Industry
Railway Industry
Bicycle Industry
Specifications (Metric mm)
Item
JIS B2401-S Series
C/S(MM)
ID(MM)
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S3
1.5
2.5
S4
1.5
3.5
S5
1.5
4.5
S6
1.5
5.5
S7
1.5
6.5
S8
1.5
7.5
S9
1.5
8.5
S10
1.5
9.5
S11.2
1.5
10.7
S12
1.5
11.5
S12.5
1.5
12
S14
1.5
13.5
S15
1.5
14.5
S16
1.5
15.5
S18
1.5
17.5
S20
1.5
19.5
S22
1.5
21.5
S22.4
2
21.9
S24
2
23.5
S25
2
24.5
S26
2
25.5
S28
2
27.5
S29
2
28.5
S30
2
29.5
S31.5
2
31
S32
2
31.5
S34
2
33.5
S35
2
34.5
S35.5
2
35
S36
2
35.5
S38
2
37.5
S39
2
38.5
S40
2
39.5
S42
2
41.5
S44
2
43.5
S45
2
44.5
S46
2
45.5
S48
2
47.5
S50
2
49.5
S53
2
52.5
S55
2
54.5
S56
2
55.5
S60
2
59.5
S63
2
62.5
S65
2
64.5
S67
2
66.5
S70
2
69.5
S71
2
70.5
S75
2
74.5
S80
2
79.5
S85
2
84.5
S90
2
89.5
S95
2
94.5
S100
2
99.5
S105
2
104.5
S110
2
109.5
S112
2
111.5
S115
2
114.5
S120
2
119.5
S125
2
124.5
S130
2
129.5
S132
2
131.5
S135
2
134.5
S140
2
139.5
S145
2
144.5
S150
2
149.5
Specifications
| 變體 | S150 |
| JIS B2401-S Series | S3 |
| C/S(MM) | 1.5 |
| ID(MM) | 2.5 |