O Rings GB Standards

Brand :

MISUMI

Caution

Product Description

O Rings GB Standards
These O Rings are an economy item, The price is cheaper than the MISUMI standard product.They offer a wide variety of sizes to choose from.
[Feature]
● Inner Diameter Minimum/ Maximum (mm.) : 1.8 to 250
● Thickness Minimum/ Maximum (mm.) : 1.8 to 7
● Material : Nitrile Rubber (Black) or Fluoro Rubber (Brown)
● Operating Temperature Range (℃)
Nitrile Rubber : -20 to 100
Fluoro Rubber : -10 to 200
[Application]
O-rings are utilized across multiple industries to prevent the leakage of fluids or gases between two components

Economy O-Ring

Wide selection High-quality Sealing

- Wide variety of sizes available

- High-quality nitrile and fluoro rubber materials

- Suitable for temperatures up to specified value

- Excellent sealing performance for various applications

- Available in multiple packaging options for convenience

MISUMI Standard

Cheaper Price

Product Variety

3D CAD
3D CAD Support

O-Rings Product Overview

O-Rings is a part that utilizes elastic interference of rubber materials to achieve a sealing effect. The national standard (GB) series are MISUMI self-developed economy series O-Rings products, which are widely used in applications that require sealing in various industries. GB series has market universal specifications in China, with color options for different materials, black for nitrile rubber and brown for fluorine rubber. The O-Rings is used in two ways: fixed and movable. When installed in the fixed way, usually via a plane, the O-Rings will be in the fixed state. When installed in the movable way, mainly via a cylindrical surface, the O-Rings will produce relative displacement.

Nitrile Rubber
(Black)
Product Drawing 1

Fluoro Rubber
(Brown)
Product Drawing 2

O-Rings Product Features

[O-Rings Features]
・Imported rubber materials are adopted, ensuring sealing performance and ultra-long service life
・With no corners cut, density and dimensions are guaranteed
・All specifications in stock and same-day shipment.

Product Drawing 3

O-Rings Specifications Overview

For the economy national standard series, O-Ringss are made of two materials: nitrile rubber and fluorine rubber, wire diameters include 1.8mm, 2.65mm, 3.55mm, 5.3mm and 7mm, and inner diameters include most of the specifications between 1.8mm and 250mm.

Product Drawing 5

Material	Hardness	Color	Applicable Temperature Range	Intended Use
Nitrile Rubber	HS70±5	Black	-20℃ to 100℃	Mineral Oil Resistant
Fluoro Rubber	HS75±5	Brown	-10℃ to 200℃	Heat Resistant, Chemical Resistant

Material	Wire Diameter W (mm)	Wire Diameter Tolerance (mm)	I.D. d (mm)	I.D. Tolerance (mm)
Nitrile Rubber Fluoro Rubber	1.8	±0.08	1.8	±0.1
			2	±0.13
			2.24
			2.5
			2.8
			3.15
			3.55
			3.75
			4
			4.5
			4.87
			5
			5.15
			5.3
			5.6
			6
			6.3	±0.14
			6.7
			6.9
			7.1
			7.5
			8
			8.5
			8.75
			9
			9.5
			10
			10.6	±0.17
			11.2
			11.8
			12.5
			13.2
			14
			15
			16
			17
			18
			19	±0.22
			20
			21.2
			22.4
			23.6
			25
			26.5
			28
			30
			32.5	±0.3
			34.5
			36.5
			38.7
			42.5	±0.36
			46.2
			50
	2.65	±0.09	10.6	±0.17
			11.2
			11.8
			12.5
			13.2
			14
			15
			16
			17
			18
			19	±0.22
20
21.2
22.4
23.6
25
26.5
28

Material	Wire Diameter W (mm)	Wire Diameter Tolerance (mm)	I.D. d (mm)	I.D. Tolerance (mm)
Nitrile Rubber Fluoro Rubber	2.65	±0.09	30	±0.22
			31.5	±0.3
			32.5
			33.5
			34.5
			35.5
			36.5
			37.5
			38.7
			40
			41.2	±0.36
			42.5
			43.7
			45
			46.2
			47.5
			48.7
			50
			51.5	±0.44
			53
			54.5
			56
			58
			60
			61.5
			63
			67	±0.53
			71
			75
			80
			85	±0.65
			90
			95
			100
			106
			112
			118
			125	±0.9
			132
			140
			150
	3.55	±0.1	18	±0.17
			19	±0.22
			20
			21.2
			22.4
			23.6
			25
			26.5
			28
			30
			31.5	±0.3
			32.5
			33.5
			34.5
			35.5
			36.5
			37.5
			38.7
			40
			41.2	±0.36
			42.5
			43.7
			45
46.2
47.5
48.7
50
51.5			±0.44
53
54.5

Material	Wire Diameter W (mm)	Wire Diameter Tolerance (mm)	I.D. d (mm)	I.D. Tolerance (mm)
Nitrile Rubber Fluoro Rubber	3.55	±0.1	56	±0.44
			58
			60
			61.5
			63
			65	±0.53
			67
			69
			71
			73
			75
			77.5
			80
			82.5	±0.65
			85
			87.5
			90
			92.5
			95
			97.5
			100
			103
			106
			109
			112
			115
			118
			122	±0.9
			125
			128
			132
			136
			140
			145
			150
			155
			160
			165
			170
			175
			180
			185	±1.2
			190
			195
			200
	5.3	±0.13	40	±0.3
			41.2	±0.36
			42.5
			43.7
			45
			46.2
			47.5
			48.7	±0.36
			50	±0.36
			51.5	±0.44
			53
			54.5
			56
			58
			60
			61.5
			63
			65	±0.53
			67
69
71
73
75
77.5
80

Material	Wire Diameter W (mm)	Wire Diameter Tolerance (mm)	I.D. d (mm)	I.D. Tolerance (mm)
Nitrile Rubber Fluoro Rubber	5.3	±0.13	82.5	±0.65
			85
			87.5
			90
			92.5
			95
			97.5
			100
			103
			106
			109
			112
			115
			118
			122	±0.9
			125
			128
			132
			136
			140
			145
			150
			155
			160
			165
			170
			175
			180
			185	±1.2
			190
			195
			200
			206
			212
			218
			224
			230
			236
			243
			250
	7	±0.15	109	±0.65
			112
			115
			118
			122	±0.9
			125
			128
			132
			136
			140
			145
			150
			155
			160
			165
			170
			175
			180
			185	±1.2
			190
			195
			200
			206
			212
218
224
230
236
243
250

Example of Use O-Rings

O-Ringss are suitable for many areas of industry, such as automated processing equipment, production lines, and peripheral equipment of manipulators. The O-Rings is used in two ways: fixed and movable.
When installed in the fixed way, usually via a plane, the O-Rings will be in the fixed state. When installed in the movable way, mainly via a cylindrical surface, the O-Rings will produce relative displacement.

Example of Use

Plane fixed type		Cylindrical surface movable type
Internal pressure fixed type	External pressure fixed type

O-Rings Precautions

For the O-Rings slotting size, please see the following drawing and table. The slotting size varies with the wire diameter and usage method. For detailed information, please see the data in the table.

Slotting size drawing
Precautions

Wire Diameter W	Fixed		Movable (pneumatic)		Movement (hydraulic)
Wire Diameter W	Groove Width G	Groove Depth H	Groove Width G	Groove Depth H	Groove Width G	Groove Depth H
1.80	2.3	1.3	2.3	1.1	2.3	1.1
2.65	3.4	2	3.1	2.35	3.1	2.3
3.55	4.5	2.7	4.2	3.25	4.2	3.1
5.30	4.9	4.3	6.4	4.95	6.4	4.7
7.00	9.1	5.85	8.4	6.6	8.4	6.3

Dimensional Drawing

For the economy national standard series, O rings are made of two materials: nitrile rubber and fluorine rubber, wire diameters include 1.8mm, 2.65mm, 3.55mm, 5.3mm and 7mm, and inner diameters include most of the specifications between 1.8mm and 250mm.

Product Drawing 1

Material	Hardness	Color	Applicable Temperature Range	Intended Use
Nitrile Rubber	HS70±5	Black	-20℃ to 100℃	Mineral Oil Resistant
Fluoro Rubber	HS75±5	Brown	-10℃ to 200℃	Heat Resistant, Chemical Resistant

Specifications Overview

Material	Wire Diameter W (mm)	Wire Diameter Tolerance (mm)	I.D. d (mm)	I.D. Tolerance (mm)
Nitrile Rubber Fluoro Rubber	1.8	±0.08	1.8	±0.1
			2	±0.13
			2.24
			2.5
			2.8
			3.15
			3.55
			3.75
			4
			4.5
			4.87
			5
			5.15
			5.3
			5.6
			6
			6.3	±0.14
			6.7
			6.9
			7.1
			7.5
			8
			8.5
			8.75
			9
			9.5
			10
			10.6	±0.17
			11.2
			11.8
			12.5
			13.2
			14
			15
			16
			17
			18
			19	±0.22
			20
			21.2
			22.4
			23.6
			25
			26.5
			28
			30
			32.5	±0.3
			34.5
			36.5
			38.7
			42.5	±0.36
			46.2
			50
	2.65	±0.09	10.6	±0.17
			11.2
			11.8
			12.5
			13.2
			14
			15
			16
			17
			18
			19	±0.22
20
21.2
22.4
23.6
25
26.5
28

Material	Wire Diameter W (mm)	Wire Diameter Tolerance (mm)	I.D. d (mm)	I.D. Tolerance (mm)
Nitrile Rubber Fluoro Rubber	2.65	±0.09	30	±0.22
			31.5	±0.3
			32.5
			33.5
			34.5
			35.5
			36.5
			37.5
			38.7
			40
			41.2	±0.36
			42.5
			43.7
			45
			46.2
			47.5
			48.7
			50
			51.5	±0.44
			53
			54.5
			56
			58
			60
			61.5
			63
			67	±0.53
			71
			75
			80
			85	±0.65
			90
			95
			100
			106
			112
			118
			125	±0.9
			132
			140
			150
	3.55	±0.1	18	±0.17
			19	±0.22
			20
			21.2
			22.4
			23.6
			25
			26.5
			28
			30
			31.5	±0.3
			32.5
			33.5
			34.5
			35.5
			36.5
			37.5
			38.7
			40
			41.2	±0.36
			42.5
			43.7
			45
46.2
47.5
48.7
50
51.5			±0.44
53
54.5

Material	Wire Diameter W (mm)	Wire Diameter Tolerance (mm)	I.D. d (mm)	I.D. Tolerance (mm)
Nitrile Rubber Fluoro Rubber	3.55	±0.1	56	±0.44
			58
			60
			61.5
			63
			65	±0.53
			67
			69
			71
			73
			75
			77.5
			80
			82.5	±0.65
			85
			87.5
			90
			92.5
			95
			97.5
			100
			103
			106
			109
			112
			115
			118
			122	±0.9
			125
			128
			132
			136
			140
			145
			150
			155
			160
			165
			170
			175
			180
			185	±1.2
			190
			195
			200
	5.3	±0.13	40	±0.3
			41.2	±0.36
			42.5
			43.7
			45
			46.2
			47.5
			48.7	±0.36
			50	±0.36
			51.5	±0.44
			53
			54.5
			56
			58
			60
			61.5
			63
			65	±0.53
			67
69
71
73
75
77.5
80

Material	Wire Diameter W (mm)	Wire Diameter Tolerance (mm)	I.D. d (mm)	I.D. Tolerance (mm)
Nitrile Rubber Fluoro Rubber	5.3	±0.13	82.5	±0.65
			85
			87.5
			90
			92.5
			95
			97.5
			100
			103
			106
			109
			112
			115
			118
			122	±0.9
			125
			128
			132
			136
			140
			145
			150
			155
			160
			165
			170
			175
			180
			185	±1.2
			190
			195
			200
			206
			212
			218
			224
			230
			236
			243
			250
	7	±0.15	109	±0.65
			112
			115
			118
			122	±0.9
			125
			128
			132
			136
			140
			145
			150
			155
			160
			165
			170
			175
			180
			185	±1.2
			190
			195
			200
			206
			212
218
224
230
236
243
250