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O-Rings

O-Rings, the simplest, most versatile and cheapest seal on the market

The O-Ring is the most simple and versatile seal as well as the cheapest one in the market. Its shape has permitted the O-Ring to become the top seal in lots of industrial fields such as fittings, car industry, hydraulics, pumps, tubings…

The widespread use of O-Rings has enabled us to develop large-scale production processes with a consequent drop in manufacturing costs. The O-Ring´s circular symmetrical section means it can be used in both single or double effect applications with any type of fluids due to its elastomeric composition.

The radial or axial clamping method gives it a sealing property which, added to the pressure of the system itself, creates a sealing force which increases with the aforementioned pressure. In other words, in conditions of pressure the O-Ring acts as if it were a fluid, featuring a high surface tension and distributing all the pressure around in a uniform manner.

Its main benefits include simple assembly, simple housing designs, low cost, small size, excellent quality/price ratio, durability, and the wide range of materials in which O-Rings are available.

O-Rings, product details

O-RingsMaterialHardness
[SH A]
Temperature
[ºC]
Check stock
Junta Tórica / O-RingNBR40 – 90-20 to +100/+120
Junta Tórica / O-RingFPM50 – 90-20 to +200/+220
Junta Tórica / O-RingEPDM40 – 85-30 to +110/+130
Junta tórica VMQ / O-Ring VMQVMQ20 – 80-60 to +160/+180
Junta Tórica / O-RingFFKM60 – 90-15 to +320

O-Rings, own approvals

In addition to its own approvals, JIOrings also provides O-rings with approvals obtained by its suppliers: drinking water, gas, flame or food. You will find a list of the main approved compounds in the Approvals section.

JIOrings
Go to Brochures to download our O-Rings brochure.

Quality control

The DIN 3371 and the ISO 3601 are the commonly used international Standards to define O-Rings tolerances.

After production, the O-rings must be subjected to several tests in order to control the properties of sizes and quality are suitable: for that, as minimum, hardness tests, sizes checking and surface control are performed.

DIN – Deutsches Institut für Normung.
ISO – International Organization for Standardization.

Tolerance on thickness

Thickness d2 (mm)Tolerances (mm)
≤1,80±0,08
1,80 – 2,65±0,09
2,65 – 3,55±0,10
3,55 – 5,30±0,13
5,30 – 7,00±0,15
7,00 – 8,00±0,18
8,00 – 10,00±0,21
10,00 – 12,00±0,25
≥ 12,00

Tolerances on inside diameter

Inside diameter d1 (mm)Tolerances (mm)
≤ 2,50±0,13
2,50 – 4,50±0,14
4,50 – 6,30±0,15
6,30 – 8,50±0,16
8,50 – 10,00±0,17
10,00 – 11,20±0,18
11,20 – 14,00±0,19
14,00 – 16,00±0,20
16,00 – 18,00±0,21
18,00 – 20,00±0,22
20,00 – 21,20±0,23
21,20 – 23,60±0,24
23,60 – 25,00±0,25
25,00 – 26,50±0,26
26,50 – 28,00±0,28
28,00 – 30,00±0,29
30,00 – 31,50±0,31
31,50 – 33,50±0,32
33,50 – 34,50±0,33
34,50 – 35,50±0,34
35,50 – 36,50±0,35
36,50 – 37,50±0,36
37,50 – 38,70±0,37
38,70 – 40,00±0,38
40,00 – 41,20±0,39
41,20 – 42,50±0,40
42,50 – 43,70±0,41
43,70 – 45,00±0,42
45,00 – 46,20±0,43
46,20 – 47,50±0,44
47,50 – 48,70±0,45
48,70 – 50,00±0,46
50,00 – 51,50±0,47
51,50 – 53,00±0,48
53,00 – 54,50±0,50
54,50 – 56,00±0,51
56,00 – 58,00±0,52
58,00 – 60,00±0,54
60,00 – 61,50±0,55
61,50 – 63,00±0,56
63,00 – 65,00±0,58
65,00 – 67,00±0,59
67,00 – 69,00±0,61
69,00 – 71,00±0,63
71,00 – 73,00±0,64
73,00 – 75,00±0,66
75,00 – 77,50±0,67
77,50 – 80,00±0,69
80,00 – 82,50±0,71
82,50 – 85,00±0,73
85,00 – 87,50±0,75
87,50 – 90,00±0,77
90,00 – 92,50±0,79
92,50 – 95,00±0,81
95,00 – 97,50±0,83
97,50 – 100,00±0,84
100,00 – 103,00±0,87
103,00 – 106,00±0,89
106,00 – 109,00±0,91
109,00 – 112,00±0,93
112,00 – 115,00±0,95
115,00 – 118,00±0,97
118,00 – 122,00±1,00
122,00 – 125,00±1,03
125,00 – 128,00±1,05
128,00 – 132,00±1,08
132,00 – 136,00±1,10
136,00 – 140,00±1,13
140,00 – 145,00±1,17
145,00 – 150,00±1,20
150,00 – 155,00±1,24
155,00 – 160,00±1,27
160,00 – 165,00±1,31
165,00 – 170,00±1,34
170,00 – 175,00±1,38
175,00 – 180,00±1,41
180,00 – 185,00±1,44
185,00 – 190,00±1,48
190,00 – 195,00±1,51
195,00 – 200,00±1,55
200,00 – 206,00±1,59
206,00 – 212,00±1,63
212,00 – 218,00±1,67
218,00 – 224,00±1,71
224,00 – 230,00±1,75
230,00 – 236,00±1,79
236,00 – 243,00±1,83
243,00 – 250,00±1,88
250,00 – 258,00±1,93
258,00 – 265,00±1,98
265,00 – 272,00±2,02
272,00 – 280,00±2,08
280,00 – 290,00±2,14
290,00 – 300,00±2,21
300,00 – 307,00±2,25
307,00 – 315,00±2,30
315,00 – 325,00±2,37
325,00 – 335,00±2,43
335,00 – 345,00±2,49
345,00 – 355,00±2,56
355,00 – 365,00±2,62
365,00 – 375,00±2,68
375,00 – 387,00±2,76
387,00 – 400,00±2,84
400,00 – 412,00±2,91
412,00 – 425,00±2,99
425,00 – 437,00±3,07
437,00 – 450,00±3,15
450,00 – 462,00±3,22
462,00 – 475,00±3,30
475,00 – 487,00±3,37
487,00 – 500,00±3,45
500,00 – 515,00±3,54
515,00 – 530,00±3,63
530,00 – 545,00±3,72
545,00 – 560,00±3,81
560,00 – 580,00±3,93
580,00 – 600,00±4,05
600,00 – 615,00±4,13
615,00 – 630,00±4,22
630,00 – 650,00±4,34
650,00 – 670,00±4,46
≥ 670,00±0,8%