Colored Fuel Injector Pressure Washer O Rings Chemicals / Steam Resistant
ASTM D1418 Designation: FKM
ORK Compound Designation: VT
Standard Color: Green, Brown Black
Description: Combining high temperature resistance with outstanding chemical resistance, Fluorocarbon-based compounds approach the ideal for a universal O-ring material.
Key Use(s): Seals for aircraft engines. Seals for automotive fuel handling systems. High temperature/low compression set applications. Wide chemical exposure situations. Hard vacuum service.
Temperature Range
Standard Compound: -13° to +446°F
Special Compound: -40° to +446°F
Hardness (Shore A): 55 to 90.
Features: High fluorine grades offer higher resistance to swell in high octane and oxygenated fuel blends. This give superior performance in Ethanol/Methanol blended gasoline. Base resistant grades offer improved resistance to amine based oil protectants found in new transmission oils. Also, improved resistant to steam for higher temperature services. Low temperature bases can improve performance to -40°F.
New Polymers being offered have improved chemical resistance and low temperature performance.
FKM® Extreme™ ETP offers similar chemical compatibility as Kalrez™ with temperature performance with a TR(10) of -40°F and brittleness to -76°.
Limitations: Fluorocarbons (FKM®s) are not recommended for exposure to ketones, amines, low molecular weight esters and ethers, nitro hydrocarbons, hot hydrofluoric or chlorosulfonic acids, or Skydrol® fluids. They are also not recommended for situations requiring good low temperature flexibility.
Material Description:
| MATERIALS TEST REPORT |
| FKM 70 GREEN COMPOUND |
| ASTM D2000 M2HK 707 A1-10 B38 EO78 EF31 F13 |
| Press Cure | Post Cure |
| Sheet : 10min 170℃ | Sheet : 16 hrs230℃ |
| Button : 10 min 170℃ | Button : 16 hrs 230℃ |
| ORIGINAL PROPERTIES | SPECIFICATION | TEST RESULT | ASTM TEST METHOD |
| HARDNESS SHORE A | 70°±5 | 71 | D2240 |
| TENSILE STRENGTH, MPA, MIN | ≥7 | 8.13 | D412 |
| ULTIMATE ELONGATION, ％, MIN | ≥175 | 209.16 | D412 |
| SPECIFIC GRAVITY (g/cm3) | | 2.05 | D297 |
| |
| HEAT RESISTANCE 70 H . AT 250℃(A1-10) | | | D573 |
| CHANGE IN HARDNESS, POINTS | +10 | +4 | |
| CHANGE IN TENSILES STRENGTH, % | -25 | +20.66 | |
| CHANGE IN ULTIMATE ELONGATION,MAX % | -25 | -7.49 | |
| |
| COMPRESSION SET, MAX, 22H AT 200℃(B38 ) | ≤30 | 20.52 | D395 |
| |
| FLUID RESISTANCE FUEL.101. 70H AT 200℃(EO78) | | | D471 |
| CHANGE IN HARDNESS, POINTS | -15~+5 | -9 | |
| CHANGE IN TENSILES STRENGTH, MAX % | -40 | -18.6 | |
| CHANGE IN ULTIMATE ELONGATION,MAX % | -20 | -12.6 | |
| CHANGE IN VOLUME % | 0~+15 | +9.85 | |
| | | | |
| FLUID RESISTANCE FUEL C, 70H AT 23℃ (EF31) | | | D471 |
| CHANGE IN HARDNESS, POINTS | ±5 | -3 | |
| CHANGE IN TENSILES STRENGTH, MAX % | -25 | -15.2 | |
| CHANGE IN ULTIMATE ELONGATION,MAX % | -20 | -12.6 | |
| CHANGE IN VOLUME % | 0~+10 | +5.2 | |
| |
| LOW-TEMPERATURE BRITTLENESS NONBRITTLE | | | |
| AFTER 3MIN AT -10°C (F13) | NONBRITTLE | PASS | D2137 |
Notes:
1. The data are based on testing slabs I buttons and are for reference purpose only.
2. Our compound can meet above -mentioned ASTM 2000 Spec.
3. This information is, to the best of our knowledge, accurate reliable to the date indicated.
4. The above mentioned data have been obtained by tests we consider as reliable, We don't assure that
- the same results can be obtained other laboratories, using different conditions by the preparation and evaluation of the samples.
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