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O Ring

Silicon Green O Ring Seal Used In Fuel Injector China Manufacturer
O Ring

Silicon Green O Ring Seal Used In Fuel Injector China Manufacturer

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  • Silicon Green O Ring Seal Used In Fuel Injector China Manufacturer
  • Silicon Green O Ring Seal Used In Fuel Injector China Manufacturer

Description

Product Description

O-ring seal refers to the section of the “O” – shaped rubber ring.It is the most widely used type of hydraulic and pneumatic transmission system.Mainly used for mechanical parts in static conditions to prevent the leakage of liquid and gas medium.In some cases, O – rings can also be used as a dynamic sealing element for axial reciprocating and low speed rotary motion.It has simple structure, convenient installation, low cost, easy maintenance and various materials.Can be used as oil, water, gas and other a variety of fluid sealing.According to different conditions, different materials can be selected to adapt to it.

Optional standard: GB3452.1 , American AS568 , Japanese JIS B 2401

No burr and no flash

O ring list (AS568)
AS568- 公制 mm AS568- 公制 mm
ID dia ID dia
001 0.74 1.02 309 10.46 5.33
002 1.07 1.27 310 12.07
003 1.42 1.52 311 13.64
004 1.78 1.78 312 15.24
005 2.57 313 16.81
006 2.90 314 18.42
007 3.68 315 19.99
008 4.47 316 21.59
009 5.28 317 23.16
010 6.07 318 24.77
011 7.65 319 26.34
012 9.25 320 27.94
013 10.82 321 29.51
014 12.42 322 31.12
015 14.00 323 32.69
016 15.6 324 34.29
017 17.17 325 37.47
018 18.77 326 40.64
019 20.35 327 43.82
020 21.95 328 46.99
021 23.52 329 50.17
022 25.12 330 53.34
023 26.70 331 56.52
024 28.30 332 59.69
025 29.78 333 62.87
026 31.47 334 66.04
027 33.05 335 69.22
028 34.65 336 72.39
029 37.82 337 75.57
030 41.0 338 78.74
031 44.17 339 81.92
032 47.35 340 85.09
033 50.52 341 88.27
034 53.70 342 91.44
035 56.78 343 94.62
036 60.05 344 97.79
037 63.22 345 100.97
038 66.40 346 104.14
039 69.57 347 107.32
040 72.57 348 110.49
041 75.92 349 113.67
042 82.78 350 116.84
043 88.62 351 120.02
044 94.97 352 123.19
045 101.32 353 126.37
046 107.67 354 129.54
047 114.02 355 132.72
048 120.37 356 135.89
049 126.72 357 139.07
050 133.07 358 142.24
102 1.24 2.62 359 145.42
103 2.06 360 148.59
104 2.84 361 151.77
105 3.63 362 158.12
106 4.42 363 164.47
107 5.23 364 170.82
108 6.02 365 177.17
109 7.59 366 183.52
110 9.19 367 189.87
111 10.77 368 196.22
112 12.37 369 202.57
113 13.94 370 208.92
114 15.54 371 215.27
115 17.12 372 221.62
116 18.72 373 227.97
117 20.3 374 234.32
118 21.89 375 240.67
119 23.47 376 247.02
120 25.07 377 253.37
121 26.64 378 266.07
122 28.24 379 278.77
123 29.82 380 291.47
124 31.42 381 304.17
125 32.99 382 329.57
126 34.59 383 354.97
127 36.17 384 380.37
128 37.77 385 405.26
129 39.34 386 430.66
130 40.94 387 456.06
131 42.52 388 481.41
132 44.12 389 506.81
133 45.69 390 532.21
134 47.29 391 557.61
135 48.9 392 582.68
136 50.47 393 608.08
137 52.07 394 633.48
138 53.64 395 658.88
139 55.25 425 113.67 6.99
140 56.82 426 116.84
141 58.42 427 120.02
142 59.99 428 123.19
143 61.6 429 126.37
144 63.17 430 129.54
145 64.77 431 132.72
146 66.34 432 135.89
147

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What factors influence the performance of industry rubber seals

The sealing effect of the sealing ring is related to the material characteristics of the sealing ring. There is also a close influence on other factors. For example, the speed of rotation, working temperature, working pressure, working medium, etc., today I will tell you about the four factors that affect the sealing performance of the sealing ring.

First, the speed of rotation

  When the rotation speed is very low (< 0.03m/s), it is necessary to consider the smoothness of the operation of the equipment and whether the operational appears "crawling" phenomenon. When the movement speed is very high (> 0.8m/s), the lubricating oil film may be destroyed, and the oil seal is not well lubricated and frictions heat, resulting in greatly reduced life. It is recommended that polyurethane or rubber and plastic oil seal work in the speed range of 0.03m/s ~ 0.8m/s. High-speed oil seals need to put forward higher requirements for structure and material, and the speed of household appliances oil seals can reach 20000rpm. Both wear and temperature resistance need to be met, and the concentricity requirements of dynamic sealing on the installation are relatively high.  

Second, the temperature of the working environment

  Low temperature will reduce the elasticity of rubber and plastic oil seals, resulting in leakage, and even the entire oil seal becomes hard and brittle. High temperature will make the oil seal volume expansion, soft, resulting in the oil seal friction resistance increases rapidly and the pressure resistance decreases. It is recommended that the continuous operating temperature range of ordinary polyurethane or rubber and plastic oil seals be -10 ° C to +80 ° C. For the high temperature and high speed requirements of the working environment, we need to choose to use fluorine rubber and PTFE, high temperature resistance and wear resistance is better, the low temperature environment is generally to -40 degrees, and the rubber performance is tested at high and low temperatures to ensure that the product quality meets the requirements.  

Third, the working pressure of machinery

  The oil seal has a minimum service pressure requirement. Oil seals with low friction and low starting resistance should be selected for low pressure work. Below 2.5MPa, polyurethane oil seal is not suitable; High pressure to consider the oil seal pressure deformation, need to use anti-extrusion stop ring, grooving processing also has special requirements.

Fourth, the working medium

  General sealing media are gasoline, oil, diesel, grease, and some static sealing dust. In addition to selecting the working medium strictly according to the manufacturer's recommendations, it is important to keep the working medium clean. Aging or contamination of the oil will not only cause the components in the system to fail, accelerate the aging and friction of the oil seal, but also the dirt in it may scratch or embed the oil seal, making the seal fail. Therefore, it is necessary to regularly check the quality of the oil and its cleanliness, and replace the oil filter or oil according to the maintenance specifications of the equipment. The air remaining in the oil in the cylinder will be compressed by high pressure, which will cause the oil seal to burn out or even carbonize. In order to avoid this situation, exhaust treatment should be carried out at the initial operation of the hydraulic system. The hydraulic cylinder should also run at low pressure and slow speed for a few minutes to confirm that the residual air in the oil has been drained before it can work normally.