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AS568 Silicon Green O Rings Seal Used In Fuel Injector China Manufacturer
O Ring

AS568 Silicon Green O Rings Seal Used In Fuel Injector China Manufacturer

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  • AS568 Silicon Green O Rings Seal Used In Fuel Injector China Manufacturer
  • AS568 Silicon Green O Rings Seal Used In Fuel Injector China Manufacturer

Description

  1. Function

    • Seal Fuel Pathways: Prevent fuel leakage in high-pressure environments (e.g., between the injector body and engine).

    • Isolate Components: Avoid contamination or air intrusion that could cause misfires, reduced efficiency, or safety hazards.

  2. Materials

    • Nitrile Rubber (NBR): Common for standard applications due to good fuel resistance and elasticity.

    • Fluorocarbon Rubber (FKM/Viton): Used in high-temperature/high-pressure systems (e.g., direct injection) for superior chemical and heat resistance.

    • Silicone Rubber: Less common but suitable for extreme temperature ranges, though less fuel-resistant than NBR/FKM.

  3. Types/Sizes

    • Standard O-Rings: Cylindrical rings with specific cross-sectional diameters (e.g., 1.78 mm, 2.62 mm) and inner diameters tailored to injector models.

    • Multi-Pack Kits: Include various sizes for different injector types (e.g., port fuel injection vs. direct injection).

  4. Symptoms of Failed O-Rings

    • Fuel Leaks: Wetness around the injector, fuel odor, or visible drips.

    • Engine Misfires: Caused by inconsistent fuel delivery or air intrusion.

    • Reduced Fuel Efficiency: Leaks or poor sealing lead to wasted fuel.

    • Check Engine Light: Triggered by fuel system pressure irregularities.

  5. Replacement and Maintenance

    • Use fuel-compatible lubricants (e.g., motor oil) during installation to prevent tearing.

    • Replace all o-rings in a set (upper and lower) to ensure uniform sealing.

    • During routine injector service or cleaning.

    • If leaks, hard starting, or performance issues occur.

    • When to Replace:

    • Tools Needed: Fuel line disconnect tools, o-ring removal/install kits to avoid damage.

    • Best Practices:

  6. Compatibility

    • Varies by vehicle make/model and injector type (e.g., Bosch, Delphi, Siemens injectors). Always reference OEM specifications for correct sizing and material.

  7. Industry Standards

    • Meet specifications like SAE (Society of Automotive Engineers) for fuel resistance and durability.

    • OEM vs. Aftermarket: OEM o-rings often offer tighter tolerances, while reputable aftermarket brands provide cost-effective alternatives.

Why They Matter

Faulty o-rings can lead to dangerous fuel leaks or engine damage. Regular inspection and replacement (as part of maintenance or repair) ensure the fuel system operates safely and efficiently. Always use high-quality materials suited to the vehicle’s fuel type (gasoline, diesel, or ethanol blends).

O ring list (AS568)
AS568-公制 mm
AS568-公制 mm
IDdia
IDdia
0010.741.02
30910.465.33
0021.071.27
31012.07
0031.421.52
31113.64
0041.781.78
31215.24
0052.57
31316.81
0062.90
31418.42
0073.68
31519.99
0084.47
31621.59
0095.28
31723.16
0106.07
31824.77
0117.65
31926.34
0129.25
32027.94
01310.82
32129.51
01412.42
32231.12
01514.00
32332.69
01615.6
32434.29
01717.17
32537.47
01818.77
32640.64
01920.35
32743.82
02021.95
32846.99
02123.52
32950.17
02225.12
33053.34
02326.70
33156.52
02428.30
33259.69
02529.78
33362.87
02631.47
33466.04
02733.05
33569.22
02834.65
33672.39
02937.82
33775.57
03041.0
33878.74
03144.17
33981.92
03247.35
34085.09
03350.52
34188.27
03453.70
34291.44
03556.78
34394.62
03660.05
34497.79
03763.22
345100.97
03866.40
346104.14
03969.57
347107.32
04072.57
348110.49
04175.92
349113.67
04282.78
350116.84
04388.62
351120.02
04494.97
352123.19
045101.32
353126.37
046107.67
354129.54
047114.02
355132.72
048120.37
356135.89
049126.72
357139.07
050133.07
358142.24
1021.242.62
359145.42
1032.06
360148.59
1042.84
361151.77
1053.63
362158.12
1064.42
363164.47
1075.23
364170.82
1086.02
365177.17
1097.59
366183.52
1109.19
367189.87
11110.77
368196.22
11212.37
369202.57
11313.94
370208.92
11415.54
371215.27
11517.12
372221.62
11618.72
373227.97
11720.3
374234.32
11821.89
375240.67
11923.47
376247.02
12025.07
377253.37
12126.64
378266.07
12228.24
379278.77
12329.82
380291.47
12431.42
381304.17
12532.99
382329.57
12634.59
383354.97
12736.17
384380.37
12837.77
385405.26
12939.34
386430.66
13040.94
387456.06
13142.52
388481.41
13244.12
389506.81
13345.69
390532.21
13447.29
391557.61
13548.9
392582.68
13650.47
393608.08
13752.07
394633.48
13853.64
395658.88
13955.25
425113.676.99
14056.82
426116.84
14158.42
427120.02
14259.99
428123.19
14361.6
429126.37
14463.17
430129.54
14564.77
431132.72
14666.34
432135.89
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