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[Features]
·It has good sealing performance with self-sealing action despite its simple structure
·Stable sealing performance even under high pressure
·Compact installation space and easy installation
·Sealing is not directional and is possible from both sides
[Applications]
·Can be used for various machines
·The material can be selected depending on the usage conditions, so it can be used in a wide range of applications, both for movement and for stationary use
Japanese Only


This synthetic rubber ring was made for the purpose of sealing liquid and gases in reciprocating motion or fixed areas
| Material | JIS Standard | Old JIS standard | Color | Hardness Type A durometer | Operating temperature range |
| Nitrile Rubber | NBR-70-1 | Class 1 A | Black | A70 +/- 5 | -30℃ to +100℃ |
| NBR-90 | Class 1 B | A90 +/- 5 | -25℃ to +100℃ | ||
| NBR-70-2 | Class 2 | A70 +/- 5 | -25°C to +80°C | ||
| Silicone rubber | VMQ-70 | Class 4C | Vermilion | A70 +/- 5 | -50°C to +200°C |
| Fluoroelastomer | FKM-70 | Class 4D | Black | A70 +/- 5 | -15°C to +200°C |
| AS568 Nominal number | O-ring nominal size (in) | O-ring actual size (mm) | AN 6227 1516 | |||||
|---|---|---|---|---|---|---|---|---|
| W | d | D | d2 | d1 | ||||
| 001 | 1/32 | 1/32 | 3/32 | 1.02 | +/- 0.07 | 0.74 | +/- 0.10 | - |
| 002 | 3/64 | 3/64 | 9/64 | 1.27 | 1.07 | - | ||
| 003 | 1/16 | 1/16 | 3/16 | 1.52 | 1.42 | - | ||
| 004 | 1/16 | 5/64 | 13/64 | 1.78 | 1.78 | +/- 0.12 | - | |
| 005 | 1/16 | 3/32 | 7/32 | 2.57 | - | |||
| 006 | 1/16 | 1/8 | 1/4 | 2.90 | 1 | |||
| 007 | 1/16 | 5/32 | 9/32 | 3.68 | 2 | |||
| 008 | 1/16 | 3/16 | 5/16 | 4.47 | 3 | |||
| 009 | 1/16 | 7/32 | 11/32 | 5.28 | 4 | |||
| 010 | 1/16 | 1/4 | 3/8 | 6.07 | 5 | |||
| 011 | 1/16 | 5/16 | 7/16 | 7.65 | 6 | |||
| 012 | 1/16 | 3/8 | 1/2 | 9.25 | 7 | |||
| 013 | 1/16 | 7/16 | 9/16 | 10.82 | - | |||
| 014 | 1/16 | 1/2 | 5/8 | 12.42 | - | |||
| 015 | 1/16 | 9/16 | 11/16 | 14.00 | - | |||
| 016 | 1/16 | 5/8 | 3/4 | 15.60 | - | |||
| 017 | 1/16 | 11/16 | 13/16 | 17.17 | - | |||
| 018 | 1/16 | 3/4 | 7/8 | 18.77 | - | |||
| 019 | 1/16 | 13/16 | 15/16 | 20.35 | +/- 0.15 | - | ||
| 020 | 1/16 | 7/8 | 1 | 21.95 | - | |||
| 021 | 1/16 | 15/16 | 1 1/16 | 23.52 | - | |||
| 022 | 1/16 | 1 | 1 1/8 | 25.12 | - | |||
| 023 | 1/16 | 1 1/16 | 1 3/16 | 26.70 | - | |||
| 024 | 1/16 | 1 1/8 | 1 1/4 | 28.30 | - | |||
| 025 | 1/16 | 1 3/16 | 1 5/16 | 29.87 | - | |||
| 026 | 1/16 | 1 1/4 | 1 3/8 | 31.47 | - | |||
| 027 | 1/16 | 1 5/16 | 1 7/16 | 33.05 | - | |||
| 028 | 1/16 | 1 3/8 | 1 1/2 | 34.65 | - | |||
| 029 | 1/16 | 1 1/2 | 1 5/8 | 37.82 | +/- 0.25 | - | ||
| 030 | 1/16 | 1 5/8 | 1 3/4 | 41.00 | - | |||
| 031 | 1/16 | 1 3/4 | 1 7/8 | 44.17 | - | |||
| 032 | 1/16 | 1 7/8 | 2 | 47.35 | - | |||
| 033 | 1/16 | 2 | 2 1/8 | 50.52 | - | |||
| 034 | 1/16 | 2 1/8 | 2 1/4 | 53.70 | - | |||
| 035 | 1/16 | 2 1/4 | 2 3/8 | 56.87 | - | |||
| 036 | 1/16 | 2 3/8 | 2 1/2 | 60.05 | - | |||
| 037 | 1/16 | 2 1/2 | 2 5/8 | 63.22 | - | |||
| 038 | 1/16 | 2 5/8 | 2 3/4 | 66.40 | - | |||
| 039 | 1/16 | 2 3/4 | 2 7/8 | 69.57 | +/- 0.38 | - | ||
| 040 | 1/16 | 2 7/8 | 3 | 72.75 | - | |||
| 041 | 1/16 | 3 | 3 1/8 | 75.92 | - | |||
| 042 | 1/16 | 3 1/4 | 3 3/8 | 82.27 | - | |||
| 043 | 1/16 | 3 1/2 | 3 5/8 | 88.62 | - | |||

Principle of action
Fig. 1: When an O-ring seals a fluid with no or low pressure, the seal is maintained by a squeeze equivalent to a percentage of the cross-sectional diameter of the O-ring.
Fig. 2: As the fluid pressure increases, as shown in the figure, the crushed O-ring in the groove is pushed from the pressure side, shifting to one side and sealing with a self-sealing effect.
Fig. 3: If the pressure increases further and exceeds 10 MPa, the softness of the rubber will cause the O-ring to be damaged by protruding into the clearance.
Fig. 4: To prevent this, if there is pressure on the opposite side of the pressure direction or on both sides, attach backup rings made of leather or fluoropolymer to both sides of the O-ring.
Cautions
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Days to Ship | RoHS | Type | I.D. d1 (mm) | Thickness d2 (mm) | Material | Type of Material | Nominal Number |
|---|---|---|---|---|---|---|---|---|---|---|---|
MYR 237.90 | 1 Piece(s) | Available | 17 Day(s) or more | 10 | - | 304.17 | 5.33 | [Fluoroelastomer] Fluorine Rubber | Class 4 D | 381 | |
MYR 70.07 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 329.57 | 5.33 | Nitrile Rubber | A Type A | 382 | |
MYR 72.76 | 1 Piece(s) | Available | 17 Day(s) or more | 10 | - | 354.97 | 5.33 | Nitrile Rubber | A Type A | 383 | |
MYR 332.48 | 1 Piece(s) | Available | 17 Day(s) or more | 10 | - | 380.37 | 5.33 | [Fluoroelastomer] Fluorine Rubber | Class 4 D | 384 | |
MYR 110.52 | 1 Piece(s) | Available | 12 Day(s) or more | 10 | - | 405.26 | 5.33 | Nitrile Rubber | A Type A | 385 | |
MYR 110.52 | 1 Piece(s) | Available | 12 Day(s) or more | 10 | - | 430.66 | 5.33 | Nitrile Rubber | A Type A | 386 | |
MYR 110.52 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 456.07 | 5.33 | Nitrile Rubber | A Type A | 387 | |
MYR 352.14 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 456.07 | 5.33 | [Fluoroelastomer] Fluorine Rubber | Class 4 D | 387 | |
MYR 118.94 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 506.86 | 5.33 | Nitrile Rubber | A Type A | 389 | |
MYR 389.62 | 1 Piece(s) | Available | 17 Day(s) or more | 10 | - | 506.86 | 5.33 | [Fluoroelastomer] Fluorine Rubber | Class 4 D | 389 | |
MYR 118.94 | 1 Piece(s) | Available | 17 Day(s) or more | 10 | - | 532.26 | 5.33 | Nitrile Rubber | A Type A | 390 | |
MYR 120.81 | 1 Piece(s) | Available | 17 Day(s) or more | 10 | - | 557.66 | 5.33 | Nitrile Rubber | A Type A | 391 | |
MYR 120.81 | 1 Piece(s) | Available | 12 Day(s) or more | 10 | - | 582.68 | 5.33 | Nitrile Rubber | A Type A | 392 | |
MYR 123.62 | 1 Piece(s) | Available | 17 Day(s) or more | 10 | - | 633.48 | 5.33 | Nitrile Rubber | A Type A | 394 | |
MYR 123.62 | 1 Piece(s) | Available | 17 Day(s) or more | 10 | - | 658.88 | 5.33 | Nitrile Rubber | A Type A | 395 | |
MYR 7.86 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 113.66 | 6.98 | Nitrile Rubber | A Type A | 425 | |
MYR 10.50 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 116.84 | 6.98 | Nitrile Rubber | A Type A | 426 | |
MYR 10.84 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 120.02 | 6.98 | Nitrile Rubber | A Type A | 427 | |
MYR 7.75 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 123.19 | 6.98 | Nitrile Rubber | A Type A | 428 | |
MYR 8.08 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 126.36 | 6.98 | Nitrile Rubber | A Type A | 429 | |
MYR 36.75 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 126.36 | 6.98 | Silicone Rubber | Class 4 C | 429 | |
MYR 8.31 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 129.54 | 6.98 | Nitrile Rubber | A Type A | 430 | |
MYR 121.76 | 1 Piece(s) | Available | 17 Day(s) or more | 10 | - | 129.54 | 6.98 | [Fluoroelastomer] Fluorine Rubber | Class 4 D | 430 | |
MYR 9.44 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 132.72 | 6.98 | Nitrile Rubber | A Type A | 431 | |
MYR 9.71 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 135.89 | 6.98 | Nitrile Rubber | A Type A | 432 | |
MYR 14.21 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 139.06 | 6.98 | Nitrile Rubber | A Type A | 433 | |
MYR 15.22 | 1 Piece(s) | Available | 17 Day(s) or more | 10 | - | 142.24 | 6.98 | Nitrile Rubber | A Type A | 434 | |
MYR 15.73 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 145.42 | 6.98 | Nitrile Rubber | A Type A | 435 | |
MYR 16.34 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 148.59 | 6.98 | Nitrile Rubber | A Type A | 436 | |
MYR 14.88 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 151.76 | 6.98 | Nitrile Rubber | A Type A | 437 | |
MYR 15.51 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 158.12 | 6.98 | Nitrile Rubber | A Type A | 438 | |
MYR 16.34 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 164.46 | 6.98 | Nitrile Rubber | A Type A | 439 | |
MYR 16.52 | 1 Piece(s) | Available | 12 Day(s) or more | 10 | - | 170.82 | 6.98 | Nitrile Rubber | A Type A | 440 | |
MYR 17.64 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 177.16 | 6.98 | Nitrile Rubber | A Type A | 441 | |
MYR 17.81 | 1 Piece(s) | Available | 12 Day(s) or more | 10 | - | 183.52 | 6.98 | Nitrile Rubber | A Type A | 442 | |
MYR 18.64 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 189.86 | 6.98 | Nitrile Rubber | A Type A | 443 | |
MYR 19.38 | 1 Piece(s) | Available | 12 Day(s) or more | 10 | - | 196.22 | 6.98 | Nitrile Rubber | A Type A | 444 | |
MYR 19.82 | 1 Piece(s) | Available | 17 Day(s) or more | 10 | - | 202.56 | 6.98 | Nitrile Rubber | A Type A | 445 | |
MYR 21.41 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 227.96 | 6.98 | Nitrile Rubber | A Type A | 447 | |
MYR 22.87 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 240.67 | 6.98 | Nitrile Rubber | A Type A | 448 | |
MYR 25.17 | 1 Piece(s) | Available | 12 Day(s) or more | 10 | - | 266.07 | 6.98 | Nitrile Rubber | A Type A | 450 | |
MYR 25.90 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 278.76 | 6.98 | Nitrile Rubber | A Type A | 451 | |
MYR 27.47 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 291.47 | 6.98 | Nitrile Rubber | A Type A | 452 | |
MYR 28.77 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 304.15 | 6.98 | Nitrile Rubber | A Type A | 453 | |
MYR 271.62 | 1 Piece(s) | Available | 17 Day(s) or more | 10 | - | 304.15 | 6.98 | [Fluoroelastomer] Fluorine Rubber | Class 4 D | 453 | |
MYR 52.19 | 1 Piece(s) | Available | 17 Day(s) or more | 10 | - | 329.56 | 6.98 | Nitrile Rubber | A Type B | 455 | |
MYR 21.74 | 1 Piece(s) | Available | 17 Day(s) or more | 10 | - | 342.27 | 6.98 | Nitrile Rubber | A Type A | 456 | |
MYR 23.26 | 1 Piece(s) | Available | 17 Day(s) or more | 10 | - | 354.96 | 6.98 | Nitrile Rubber | A Type A | 457 | |
MYR 24.54 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 367.67 | 6.98 | Nitrile Rubber | A Type A | 458 | |
MYR 24.54 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 380.36 | 6.98 | Nitrile Rubber | A Type A | 459 | |
MYR 26.07 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 393.07 | 6.98 | Nitrile Rubber | A Type A | 460 | |
MYR 126.43 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 430.66 | 6.98 | Nitrile Rubber | A Type A | 463 | |
MYR 129.23 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 443.36 | 6.98 | Nitrile Rubber | A Type A | 464 | |
MYR 129.23 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 456.06 | 6.98 | Nitrile Rubber | A Type A | 465 | |
MYR 129.23 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 468.76 | 6.98 | Nitrile Rubber | A Type A | 466 | |
MYR 136.76 | 1 Piece(s) | Available | 17 Day(s) or more | 10 | - | 506.86 | 6.98 | Nitrile Rubber | A Type A | 469 | |
MYR 139.57 | 1 Piece(s) | Available | 17 Day(s) or more | 10 | - | 532.26 | 6.98 | Nitrile Rubber | A Type A | 470 | |
MYR 144.23 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 608.08 | 6.98 | Nitrile Rubber | A Type A | 473 | |
MYR 2.18 | 10 Piece(s) | Available | 12 Day(s) or more | 10 | - | 4.7 | 1.42 | Nitrile Rubber | A Type A | 901 | |
MYR 2.18 | 10 Piece(s) | Available | 12 Day(s) or more | 10 | - | 6.07 | 1.63 | Nitrile Rubber | A Type A | 902 | |
MYR 2.18 | 10 Piece(s) | Available | 12 Day(s) or more | 10 | - | 7.64 | 1.63 | Nitrile Rubber | A Type A | 903 | |
MYR 2.95 | 1 Piece(s) | Available | 17 Day(s) or more | 10 | - | 7.64 | 1.63 | Silicone Rubber | Class 4 C | 903 | |
MYR 3.54 | 1 Piece(s) | Available | 12 Day(s) or more | 10 | - | 7.64 | 1.63 | [Fluoroelastomer] Fluorine Rubber | Class 4 D | 903 | |
MYR 2.53 | 10 Piece(s) | Available | 10 Day(s) or more | 10 | - | 8.92 | 1.83 | Nitrile Rubber | A Type A | 904 | |
MYR 4.04 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 8.92 | 1.83 | Nitrile Rubber | A Type B | 904 | |
MYR 2.36 | 10 Piece(s) | Available | 4 Day(s) or more | 10 | - | 10.52 | 1.83 | Nitrile Rubber | A Type A | 905 | |
MYR 2.64 | 10 Piece(s) | Available | 4 Day(s) or more | 10 | - | 11.89 | 1.98 | Nitrile Rubber | A Type A | 906 | |
MYR 3.03 | 10 Piece(s) | Available | 17 Day(s) or more | 10 | - | 13.46 | 2.08 | Nitrile Rubber | A Type A | 907 | |
MYR 2.61 | 10 Piece(s) | Available | 12 Day(s) or more | 10 | - | 16.36 | 2.21 | Nitrile Rubber | A Type A | 908 | |
MYR 2.61 | 10 Piece(s) | Available | 12 Day(s) or more | 10 | - | 17.93 | 2.46 | Nitrile Rubber | A Type A | 909 | |
MYR 3.36 | 10 Piece(s) | Available | 10 Day(s) or more | 10 | - | 19.18 | 2.46 | Nitrile Rubber | A Type A | 910 | |
MYR 3.36 | 10 Piece(s) | Available | 4 Day(s) or more | 10 | - | 21.92 | 2.95 | Nitrile Rubber | A Type A | 911 | |
MYR 4.04 | 10 Piece(s) | Available | 17 Day(s) or more | 10 | - | 23.47 | 2.95 | Nitrile Rubber | A Type A | 912 | |
MYR 15.39 | 1 Piece(s) | 17 Day(s) or more | 10 | - | 23.47 | 2.95 | [Fluoroelastomer] Fluorine Rubber | Class 4 D | 912 | ||
MYR 3.12 | 10 Piece(s) | Available | 10 Day(s) or more | 10 | - | 25.04 | 2.95 | Nitrile Rubber | A Type A | 913 | |
MYR 5.90 | 1 Piece(s) | Available | 12 Day(s) or more | 10 | - | 26.59 | 2.95 | Nitrile Rubber | A Type B | 914 | |
MYR 4.38 | 1 Piece(s) | Available | 17 Day(s) or more | 10 | - | 29.74 | 2.95 | Nitrile Rubber | A Type A | 916 | |
MYR 3.71 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 34.42 | 2.95 | Nitrile Rubber | A Type A | 918 | |
MYR 10.67 | 1 Piece(s) | Available | 10 Day(s) or more | 10 | - | 37.46 | 3 | Nitrile Rubber | A Type B | 920 | |
MYR 4.26 | 1 Piece(s) | Available | 17 Day(s) or more | 10 | - | 53.09 | 3 | Nitrile Rubber | A Type A | 928 | |
MYR 7.69 | 1 Piece(s) | Available | 4 Day(s) or more | 10 | - | 59.36 | 3 | Nitrile Rubber | A Type A | 932 | |
MYR 10.95 | 1 Piece(s) | Available | 17 Day(s) or more | 10 | - | 59.36 | 3 | Nitrile Rubber | Class 2 | 932 |
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| Standard | for AS568 (ARP568) Aircraft |
|---|
![AS568 [Old: ARP568] (for O-Ring Hydraulic)](http://my.misumi-ec.com/linked/material/mech/MOS1/PHOTO/221005149925_002.jpg?$product_recommend_b$)
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