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O-Rings/S Series

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Volume Discount

O-Rings/S Series
The O Ring is a commonly employed sealing component found in automation machines across a wide range of industries.
[Feature]
● Inner Diameter Minimum/ Maximum (mm.) : 2.5 to 49.5
● Thickness (mm.) : 1.5 and 2
● Material and Operating Temperature Range (℃)
Nitrile Rubber -> -30 to 100 ℃
Silicone Rubber -> -50 to 200 ℃
Fluoro Rubber -> -15 to 200 ℃
[Application]
O-rings are utilized across multiple industries to prevent the leakage of fluids or gases between two components

(i)Caution

Please check the content on our website as the PDF does not contain the most up-to-date information.

Part Number

Configured Part Number is shown.

Drawing/Specifications
3D Preview
Part Numbers
Catalog

■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	Operation Temperature Range	Usage	Features
NSA	Nitrile Rubber	70±5	Black	-30~100°C	Mineral Oil Resistant	Most representative material with superior oil / abrasion resistance and heat stability.
NSB	Nitrile Rubber	90±5	Black	-25~100°C	Mineral Oil Resistant
NSSW	Silicon Rubber	50±5	Milky White	-50~200°C	Heat Resistant	Having excellent high and low temperature resistances, this material has the widest range of operating temperatures among synthetic rubbers. It is suitable for food-related applications.
NSSK	Silicon Rubber	70±5	Scarlet Red	-50~200°C	Heat Resistant
NSF	Fluoro Rubber	70±5	Black	-15~200°C	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	-15~200°C	Heat Resistant

Specifications

Part Number

NSA25

■S Series

Part Number		Nominal Number	W	I.D.				Matching Material
Type	No.	Nominal Number	W	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, Scarlet Red) 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

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Part Number
NSA3
NSA4
NSA5
NSA6
NSA7
NSA8
NSA9
NSA10
NSA11.2
NSA12
NSA12.5
NSA14
NSA15
NSA16
NSA18
NSA20
NSA22
NSA22.4
NSA24
NSA25
NSA26
NSA28
NSA29
NSA30
NSA31.5
NSA32
NSA34
NSA35
NSA35.5
NSA36
NSA38
NSA39
NSA40
NSA42
NSA44
NSA45
NSA46
NSA48
NSA50
NSB3
NSB4
NSB5
NSB6
NSB7
NSB8
NSB9
NSB10
NSB11.2
NSB12
NSB12.5
NSB14
NSB15
NSB16
NSB18
NSB20
NSB22
NSB22.4
NSB24
NSB25
NSB26

Standard Unit Price	Minimum order quantity	Volume Discount	Days to Ship	Inner Dia. do (or d) (mm)	Wire Dia. W (mm)	Material	Application	Nominal Number
MYR 0.82	1 Piece(s)	Available	2 Day(s)	2.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	3
MYR 0.82	1 Piece(s)	Available	1 Day(s)	3.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	4
MYR 0.82	1 Piece(s)	Available	2 Day(s)	4.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	5
MYR 0.82	1 Piece(s)	Available	1 Day(s)	5.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	6
MYR 7.46	1 Piece(s)	Available	1 Day(s)	6.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	7
MYR 0.82	1 Piece(s)	Available	1 Day(s)	7.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	8
MYR 0.82	1 Piece(s)	Available	1 Day(s)	8.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	9
MYR 0.82	1 Piece(s)	Available	1 Day(s)	9.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	10
MYR 0.82	1 Piece(s)	Available	2 Day(s)	10.7	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	11.2
MYR 0.90	1 Piece(s)	Available	1 Day(s)	11.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	12
MYR 0.90	1 Piece(s)	Available	2 Day(s)	12	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	12.5
MYR 0.90	1 Piece(s)	Available	1 Day(s)	13.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	14
MYR 0.90	1 Piece(s)	Available	2 Day(s)	14.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	15
MYR 1.37	1 Piece(s)	Available	1 Day(s)	15.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	16
MYR 1.38	1 Piece(s)	Available	1 Day(s)	17.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	18
MYR 1.61	1 Piece(s)	Available	2 Day(s)	19.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	20
MYR 8.21	1 Piece(s)	Available	2 Day(s)	21.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	22
MYR 8.21	1 Piece(s)	Available	2 Day(s)	21.9	2	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	22.4
MYR 8.21	1 Piece(s)	Available	2 Day(s)	23.5	2	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	24
MYR 8.31	1 Piece(s)	Available	2 Day(s)	24.5	2	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	25
MYR 1.73	1 Piece(s)	Available	2 Day(s)	25.5	2	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	26
MYR 1.73	1 Piece(s)	Available	1 Day(s)	27.5	2	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	28
MYR 1.73	1 Piece(s)	Available	2 Day(s)	28.5	2	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	29
MYR 1.73	1 Piece(s)	Available	2 Day(s)	29.5	2	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	30
MYR 1.90	1 Piece(s)	Available	4 Day(s) or more	31	2	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	31.5
MYR 1.90	1 Piece(s)	Available	2 Day(s)	31.5	2	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	32
MYR 1.90	1 Piece(s)	Available	2 Day(s)	33.5	2	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	34
MYR 2.28	1 Piece(s)	Available	2 Day(s)	34.5	2	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	35
MYR 2.28	1 Piece(s)	Available	4 Day(s) or more	35	2	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	35.5
MYR 2.28	1 Piece(s)	Available	2 Day(s)	35.5	2	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	36
MYR 2.35	1 Piece(s)	Available	2 Day(s)	37.5	2	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	38
MYR 2.35	1 Piece(s)	Available	4 Day(s) or more	38.5	2	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	39
MYR 8.99	1 Piece(s)	Available	1 Day(s)	39.5	2	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	40
MYR 2.65	1 Piece(s)	Available	2 Day(s)	41.5	2	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	42
MYR 2.65	1 Piece(s)	Available	2 Day(s)	43.5	2	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	44
MYR 2.65	1 Piece(s)	Available	2 Day(s)	44.5	2	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	45
MYR 9.28	1 Piece(s)	Available	2 Day(s)	45.5	2	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	46
MYR 2.72	1 Piece(s)	Available	2 Day(s)	47.5	2	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	48
MYR 2.76	1 Piece(s)	Available	2 Day(s)	49.5	2	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	50
MYR 4.85	1 Piece(s)	Available	2 Day(s)	2.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	3
MYR 4.85	1 Piece(s)	Available	2 Day(s)	3.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	4
MYR 4.85	1 Piece(s)	Available	2 Day(s)	4.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	5
MYR 4.85	1 Piece(s)	Available	2 Day(s)	5.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	6
MYR 4.85	1 Piece(s)	Available	4 Day(s) or more	6.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	7
MYR 4.85	1 Piece(s)	Available	2 Day(s)	7.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	8
MYR 4.85	1 Piece(s)	Available	2 Day(s)	8.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	9
MYR 4.85	1 Piece(s)	Available	1 Day(s)	9.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	10
MYR 4.85	1 Piece(s)	Available	4 Day(s) or more	10.7	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	11.2
MYR 4.85	1 Piece(s)	Available	2 Day(s)	11.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	12
MYR 4.85	1 Piece(s)	Available	4 Day(s) or more	12	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	12.5
MYR 4.85	1 Piece(s)	Available	4 Day(s) or more	13.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	14
MYR 4.85	1 Piece(s)	Available	4 Day(s) or more	14.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	15
MYR 4.85	1 Piece(s)	Available	4 Day(s) or more	15.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	16
MYR 4.85	1 Piece(s)	Available	4 Day(s) or more	17.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	18
MYR 4.85	1 Piece(s)	Available	2 Day(s)	19.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	20
MYR 6.07	1 Piece(s)	Available	4 Day(s) or more	21.5	1.5	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	22
MYR 6.07	1 Piece(s)	Available	4 Day(s) or more	21.9	2	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	22.4
MYR 6.07	1 Piece(s)	Available	4 Day(s) or more	23.5	2	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	24
MYR 6.63	1 Piece(s)	Available	2 Day(s)	24.5	2	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	25
MYR 6.07	1 Piece(s)	Available	4 Day(s) or more	25.5	2	Nitrile Rubber	Mineral Oil Resistant / Heat Resistant / Abrasion Resistant	26

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Basic Information

Standard	S Series

Configure

234 Part Numbers

View Part Numbers

Configure Remaining Specifications

Completed

Specification/Dimensions

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
Clear
Wire Dia. W(mm)
1.5

2
Clear
Material
- Nitrile Rubber
- Silicone Rubber
- Fluoroelastomer
  - Fluoro Rubber
Clear
Application
- Mineral Oil Resistant
- Heat Resistant
- Abrasion Resistant
- Chemical Resistant
- Cold Resistant
Clear
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
Clear
type
- NSA
- NSB
- NSF
- NSFH
- NSSK
- NSSW
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

1 Day(s) or Less

2 Day(s) or Less

4 Day(s) or Less

6 Day(s) or Less
Clear

Specify Alterations

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

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O-Rings/S Series

(i)Caution

Specifications

Part Number

Basic Information

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Specification/Dimensions

Inner Dia. do (or d)(mm)

Wire Dia. W(mm)

Material

Application

Nominal Number

type

CAD

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