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
變體
JIS B2401-S Series
C/S(MM)
ID(MM)
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S3
S3
1.5
2.5
S4
S4
1.5
3.5
S5
S5
1.5
4.5
S6
S6
1.5
5.5
S7
S7
1.5
6.5
S8
S8
1.5
7.5
S9
S9
1.5
8.5
S10
S10
1.5
9.5
S11.2
S11.2
1.5
10.7
S12
S12
1.5
11.5
S12.5
S12.5
1.5
12
S14
S14
1.5
13.5
S15
S15
1.5
14.5
S16
S16
1.5
15.5
S18
S18
1.5
17.5
S20
S20
1.5
19.5
S22
S22
1.5
21.5
S22.4
S22.4
2
21.9
S24
S24
2
23.5
S25
S25
2
24.5
S26
S26
2
25.5
S28
S28
2
27.5
S29
S29
2
28.5
S30
S30
2
29.5
S31.5
S31.5
2
31
S32
S32
2
31.5
S34
S34
2
33.5
S35
S35
2
34.5
S35.5
S35.5
2
35
S36
S36
2
35.5
S38
S38
2
37.5
S39
S39
2
38.5
S40
S40
2
39.5
S42
S42
2
41.5
S44
S44
2
43.5
S45
S45
2
44.5
S46
S46
2
45.5
S48
S48
2
47.5
S50
S50
2
49.5
S53
S53
2
52.5
S55
S55
2
54.5
S56
S56
2
55.5
S60
S60
2
59.5
S63
S63
2
62.5
S65
S65
2
64.5
S67
S67
2
66.5
S70
S70
2
69.5
S71
S71
2
70.5
S75
S75
2
74.5
S80
S80
2
79.5
S85
S85
2
84.5
S90
S90
2
89.5
S95
S95
2
94.5
S100
S100
2
99.5
S105
S105
2
104.5
S110
S110
2
109.5
S112
S112
2
111.5
S115
S115
2
114.5
S120
S120
2
119.5
S125
S125
2
124.5
S130
S130
2
129.5
S132
S132
2
131.5
S135
S135
2
134.5
S140
S140
2
139.5
S145
S145
2
144.5
S150
S150
2
149.5
Specifications
| 變體 | S150 |
| JIS B2401-S Series | S3 |
| C/S(MM) | 1.5 |
| ID(MM) | 2.5 |