O-Ring S Series

Brand :

MISUMI

Caution

This is an economy item, The price is cheaper than the MISUMI standard product.

Product Description

【Product Overview】
O-rings are sealing components that utilize the elastic interference of rubber materials.
The economical O-ring S Series is manufactured according to the JIS B 2401 S Series standard.
The usage method is fixed type, and after installation, the O-ring remains in a fixed position.
【Product Feature】
1. Simple structure and easy installation.
2. Wide variety of materials and sizes.

Product Overview

The O-ring is a sealing component that utilizes the elastic interference of rubber materials. The economical S series O-rings are manufactured according to the JIS B 2401 S series standard.
The usage method is fixed; after installation, the O-ring remains in a fixed position.

Dimensional Drawing

Specification Overview

The economical O-ring S series is available in two materials: Nitrile rubber and fluoro rubber.
Ample stock available for same-day shipping.

Type	Material	Hardness (JIS Hs)		Color	Usable temperature range	Application
E-PACK-NSA	Nitrile Rubber	HS65	+10 0	Black	-20 to 100°C	For mineral oil resistance
E-PACK-NSF	Fluoro Rubber	HS65	+10 0	Black	-10 to 200°C	For high temperature resistance
E-PACK-NSFH	Fluoro Rubber	HS85	+10 0	Black	-10 to 200°C	For high temperature resistance

Specification Table

Type		Nominal Number	W	Inner Diameter			Compatible Materials
Type	No.	Nominal Number	W	do	NSA Tolerance	NSF·NSFH Tolerance	d	Tolerance	D	Tolerance
E-PACK-NSA (Nitrile Rubber, Black) E-PACK-NSF (Fluoro Rubber, Black) E-PACK-NSFH (Fluoro Rubber, Black)	3	3	1.5±0.1	2.5	±0.15	±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			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			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			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	±0.50	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

Product Features

1. Simple structure and easy installation.
2. Available in a wide range of materials and sizes.
3. Ample stock and prompt delivery.

Usage Method

Detailed installation dimensions

Type	No.	G dimension (tolerance +0.25/0)			H dimension H±0.05	R dimension Maximum value
Type	No.	No protective washer	Single-sided protective washer	Double-sided protective washer	H dimension H±0.05	R dimension Maximum value
E-PACK-NSA E-PACK-NSF·E-PACK-NSFH	3 to 22	2.5	-	-	1	0.2
E-PACK-NSA E-PACK-NSF·E-PACK-NSFH	22.4–50	2.7	-	-	1.5	0.4

Precautions

When synthetic rubber comes into contact with different liquids, the following phenomena may occur depending on the type of liquid.
● Swelling after absorbing liquid (swelling)
● Bond breakdown due to chemical reaction (decomposition)
● Product becomes thinner after additives precipitate (extraction)
These adverse reactions in rubber often lead to poor sealing performance in sealing products. It is recommended to first confirm whether the material and the sealing medium will react when selecting materials for sealing products.
In addition, temperature and the type of additives will also affect the reaction results; even the same medium may react differently at different temperatures. When liquids are mixed, the effect on rubber is multiplied due to the combined effect.

Example of Use

Example of Use images are for reference only.