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Inner Dia. do (or d)(mm)

2.5
3.5
4.5
5.5
6.5
7.5
8.5
9.5
10.7
11.5
12
13.5
14.5
15.5
17.5
19.5
21.5
21.9
23.5
24.5
25.5
27.5
28.5
29.5
31
31.5
33.5
34.5
35
35.5
37.5
38.5
39.5
41.5
43.5
44.5
45.5
47.5
49.5

Wire Dia. W(mm)

Material

Nitrile Rubber

Silicon Rubber

Fluororubber

Fluororubber

Application

Nominal Number

3
4
5
6
7
8
9
10
11.2
12
12.5
14
15
16
18
20
22
22.4
24
25
26
28
29
30
31.5
32
34
35
35.5
36
38
39
40
42
44
45
46
48
50

Type

CAD

Est. shipping days

All
Same-day shipping possible
Within 5 working days

MISUMI

O-Rings / S Series

CatalogP.2-1425

Part number:

Still undefined. 234 possible part numbers found.

Outline drawing and specifications table
Part number list
More Information
Catalog

Outline drawing and specifications table

Dimensional Drawings

■Detailed Fitting Size

Type	No.	G Dimension (Tolerance + 0.25 0)			H Dimension H±0.05	R Dimension Max. Value
Type	No.	No Back-Up Ring	Back-Up Ring on One Side Ring	Back-Up Rings on Both Sides Ring	H Dimension H±0.05	R Dimension Max. Value
NSA·NSB·NSSW NSSK·NSF·NSFH	3 to 22	2.5	—	—	1.0	0.2
NSA·NSB·NSSW NSSK·NSF·NSFH	22.4 to 50	2.7	—	—	1.5	0.4

For Surface Mounting

For Fixing Cylinder Surface

No Back-Up Ring

For External Pressure

For Internal Pressure

Type	[M] Material	[H] Hardness (JIS Hs)	Color	Applicable Temperature Range	Old JIS Material Identification Symbol	JIS Material Identification Symbol	Applications:	Features
NSA	Nitrile Rubber	70±5	Black	－30 to 100°C	Class 1 A	NBR-70-1	Mineral Oil Resistant	Most representative material with superior oil / abrasion resistance and heat stability.
NSB	Nitrile Rubber	90±5	Black	－25 to 100°C	Class 1 B	NBR-90	Mineral Oil Resistant
NSSW	Silicon Rubber	50±5	Milky White	－50 to 200°C	—	—	Heat Resistant	Having excellent high and low temperature resistances, this material covers the widest range of operating temperatures among synthetic rubbers.
NSSK	Silicon Rubber	70±5	Scarlet Red	－50 to 200°C	Class 4 C	VMQ-70	Heat Resistant
NSF	Fluoro Rubber	70±5	Black	－15 to 200°C	Class 4 D	FKM-70	Heat Resistant	Best in oil / chemical resistance and heat stability as synthetic rubber. Suitable for a wide range of applications.
NSFH	Fluoro Rubber	90±5	Black	－15 to 200°C	—	FKM-90	Heat Resistant

[ ! ] The service life is not constant depending on the operating environment.

Specification Table

Part Number

NSA25

■ S Series

Part Number		Nominal Number	W	I.D.				Matching Material
Type	No.			do	NSA·NSB Tolerance	NSSW·NSSK Tolerance	NSF·NSFH Tolerance	d	Tolerance	D	Tolerance
Type	No.			do	NSA·NSB Tolerance	NSSW·NSSK Tolerance	NSF·NSFH Tolerance	d	Tolerance	D	Tolerance
NSA (Nitrile Rubber, Black) NSB (Nitrile Rubber, Black) NSSW (Silicon Rubber, Milky White) NSSK (Silicon Rubber, Vermilion) NSF (Fluoro Rubber, Black) NSFH (Fluoro Rubber, Black)	3	3	1.5±0.1	2.5	±0.15	±0.45	±0.30	3	0 − 0.05	5	+0.05 0
	4	4		3.5				4		6
	5	5		4.5				5		7
	6	6		5.5				6		8
	7	7		6.5				7		9
	8	8		7.5				8		10
	9	9		8.5				9		11
	10	10		9.5				10		12
	11.2	11.2		10.7				11.2		13.2
	12	12		11.5				12		14
	12.5	12.5		12.0				12.5		14.5
	14	14		13.5				14		16
	15	15		14.5				15		17
	16	16		15.5				16		18
	18	18		17.5				18		20
	20	20		19.5				20		22
	22	22		21.5				22		24
	22.4	22.4	2.0±0.1	21.9				22.4		25.4
	24	24		23.5				24		27
	25	25		24.5				25		28
	26	26		25.5				26		29
	28	28		27.5				28		31
	29	29		28.5				29		32
	30	30		29.5				30		33
	31.5	31.5		31.0				31.5		34.5
	32	32		31.5				32		35
	34	34		33.5				34		37
	35	35		34.5				35		38
	35.5	35.5		35.0				35.5		38.5
	36	36		35.5				36		39
	38	38		37.5				38		41
	39	39		38.5				39		42
	40	40		39.5				40		43
	42	42		41.5	±0.25	±0.75	±0.50	42		45
	44	44		43.5				44		47
	45	45		44.5				45		48
	46	46		45.5				46		49
	48	48		47.5				48		51
	50	50		49.5				50		53

Part number list

Number of items

Part number

Inner Dia. do (or d)

(mm)

Wire Dia. W

(mm)

Material

Application

Nominal Number

Minimum order quantity

2.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	3	1 pieces
3.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	4	1 pieces
4.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	5	1 pieces
5.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	6	1 pieces
6.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	7	1 pieces
7.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	8	1 pieces
8.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	9	1 pieces
9.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	10	1 pieces
10.7	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	11.2	1 pieces
11.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	12	1 pieces
12	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	12.5	1 pieces
13.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	14	1 pieces
14.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	15	1 pieces
15.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	16	1 pieces
17.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	18	1 pieces
19.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	20	1 pieces
21.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	22	1 pieces
21.9	2	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	22.4	1 pieces
23.5	2	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	24	1 pieces
24.5	2	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	25	1 pieces
25.5	2	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	26	1 pieces
27.5	2	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	28	1 pieces
28.5	2	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	29	1 pieces
29.5	2	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	30	1 pieces
31	2	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	31.5	1 pieces
31.5	2	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	32	1 pieces
33.5	2	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	34	1 pieces
34.5	2	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	35	1 pieces
35	2	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	35.5	1 pieces
35.5	2	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	36	1 pieces
37.5	2	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	38	1 pieces
38.5	2	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	39	1 pieces
39.5	2	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	40	1 pieces
41.5	2	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	42	1 pieces
43.5	2	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	44	1 pieces
44.5	2	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	45	1 pieces
45.5	2	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	46	1 pieces
47.5	2	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	48	1 pieces
49.5	2	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	50	1 pieces
2.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	3	1 pieces
3.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	4	1 pieces
4.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	5	1 pieces
5.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	6	1 pieces
6.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	7	1 pieces
7.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	8	1 pieces
8.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	9	1 pieces
9.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	10	1 pieces
10.7	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	11.2	1 pieces
11.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	12	1 pieces
12	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	12.5	1 pieces
13.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	14	1 pieces
14.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	15	1 pieces
15.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	16	1 pieces
17.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	18	1 pieces
19.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	20	1 pieces
21.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	22	1 pieces
21.9	2	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	22.4	1 pieces
23.5	2	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	24	1 pieces
24.5	2	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	25	1 pieces
25.5	2	Nitrile Rubber	Mineral Oil Resistant / Abrasion Resistance	26	1 pieces

Unit price (excluding VAT)(Unit price including VAT)	Standard shipping days

0.19 € ( 0.23 € )	Stock item: 1 working dayAvailable for same-day shipping
0.19 € ( 0.23 € )	Stock item: 1 working dayAvailable for same-day shipping
0.19 € ( 0.23 € )	Stock item: 1 working dayAvailable for same-day shipping
0.19 € ( 0.23 € )	Stock item: 1 working dayAvailable for same-day shipping
0.19 € ( 0.23 € )	Stock item: 1 working dayAvailable for same-day shipping
0.19 € ( 0.23 € )	Stock item: 1 working dayAvailable for same-day shipping
0.27 € ( 0.32 € )	Stock item: 1 working dayAvailable for same-day shipping
0.19 € ( 0.23 € )	Stock item: 1 working dayAvailable for same-day shipping
0.25 € ( 0.30 € )	Stock item: 1 working dayAvailable for same-day shipping
0.20 € ( 0.24 € )	5 working days
0.20 € ( 0.24 € )	Stock item: 1 working dayAvailable for same-day shipping
0.20 € ( 0.24 € )	Stock item: 1 working dayAvailable for same-day shipping
0.20 € ( 0.24 € )	5 working days
0.32 € ( 0.38 € )	Stock item: 1 working dayAvailable for same-day shipping
0.32 € ( 0.38 € )	Stock item: 1 working dayAvailable for same-day shipping
0.36 € ( 0.43 € )	Stock item: 1 working dayAvailable for same-day shipping
0.68 € ( 0.81 € )	5 working days
0.36 € ( 0.43 € )	Stock item: 1 working dayAvailable for same-day shipping
0.36 € ( 0.43 € )	5 working days
0.39 € ( 0.46 € )	5 working days
0.39 € ( 0.46 € )	5 working days
0.39 € ( 0.46 € )	5 working days
0.39 € ( 0.46 € )	5 working days
0.39 € ( 0.46 € )	5 working days
0.43 € ( 0.51 € )	5 working days
0.43 € ( 0.51 € )	5 working days
0.43 €0.19 € ( 0.23 € )	Stock item: 1 working dayAvailable for same-day shipping
0.53 € ( 0.63 € )	5 working days
0.53 € ( 0.63 € )	5 working days
0.70 € ( 0.83 € )	5 working days
0.55 € ( 0.65 € )	5 working days
0.55 € ( 0.65 € )	Stock item: 1 working dayAvailable for same-day shipping
1.01 € ( 1.20 € )	5 working days
0.69 € ( 0.82 € )	5 working days
0.74 € ( 0.88 € )	5 working days
0.61 € ( 0.73 € )	5 working days
0.73 € ( 0.87 € )	5 working days
1.02 € ( 1.21 € )	5 working days
0.63 € ( 0.75 € )	Stock item: 1 working dayAvailable for same-day shipping
0.31 € ( 0.37 € )	5 working days
0.31 € ( 0.37 € )	5 working days
0.31 € ( 0.37 € )	5 working days
0.63 € ( 0.75 € )	5 working days
0.33 € ( 0.39 € )	5 working days
0.33 €0.10 € ( 0.12 € )	Stock item: 1 working dayAvailable for same-day shipping
0.33 € ( 0.39 € )	5 working days
0.33 € ( 0.39 € )	Stock item: 1 working dayAvailable for same-day shipping
0.35 € ( 0.42 € )	5 working days
0.35 € ( 0.42 € )	5 working days
0.35 € ( 0.42 € )	5 working days
0.38 € ( 0.45 € )	5 working days
0.38 € ( 0.45 € )	5 working days
0.38 € ( 0.45 € )	5 working days
0.38 € ( 0.45 € )	5 working days
0.50 € ( 0.59 € )	5 working days
0.38 € ( 0.45 € )	5 working days
0.38 € ( 0.45 € )	5 working days
0.38 € ( 0.45 € )	5 working days
0.44 € ( 0.52 € )	5 working days
0.44 € ( 0.52 € )	5 working days

Basic information

Basic information

[Features] One O-ring, S series.

Catalog

Products homepage

Catalog (2-page spread)