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Southwest Research Institute (SwRI) offers the oil and elastomer compatibility laboratory test method, which determines the compatibility of lubricating oils and cured elastomers used in the automotive industry.
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| Gasoline and Diesel Engines |
Gasoline and Diesel Engines with Aftertreatment Devices |
Heavy-Duty Diesel Engines |
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A1/B1-04 A3/B3-04 A3/B4-04 A5/B5-04 |
C1-04 C2-04 C3-04 |
E2-96
Issue 5 E4-99 Issue 3 E6-04 E7-04 |
CEC L-39-T-96 Test Parameters
Test specimens are cut from slabs of the reference elastomer to be tested and are immersed in the oil being tested for a given period of time at a given temperature.
Pass/Fail Criteria
The pass/fail criteria include maximum variation of characteristics after immersion for 7 days in fresh oil without pre-aging
| Gasoline and Diesel Engines | |||||
| Property | Elastomer Type | ||||
| RE1 | RE2-99 | RE3-04 | RD4 | AEM (VAMAC) | |
| Hardness DIDC, points | -1/+5 | -5/+8 | -22 max | -5/+5 | As per Daimler-Chrysler |
| Tensile Strength, % | -40/+10 | -15/+18 | -30/+10 | -20/+10 | |
| Elongation at Rupture, % | -50/+10 | -35/+10 | -20/+10 | -50/+10 | |
| Volume Variation, % | -1/+5 | -7/+5 | +22 max | -5/+5 | |
| Gasoline and Diesel Engines with Aftertreatment Devices | |||||
| Property | Elastomer Type | ||||
| RE1 | RE2-99 | RE3-04 | RD4 | AEM (VAMAC) | |
| Hardness DIDC, points | -1/+5 | -5/+8 | -22 max | -5/+5 | As per Daimler-Chrysler |
| Tensile Strength, % | -40/+10 | -15/+18 | -30/+10 | -20/+10 | |
| Elongation at Rupture, % | -50/+10 | -35/+10 | -20/+10 | -50/+10 | |
| Volume Variation, % | -1/+5 | -7/+5 | +22 max | -5/+5 | |
| Heavy-Duty Diesel Engines | |||||
| Property | Elastomer Type | ||||
| RE1 | RE2-99 | RE3-04 | RD4 | AEM (VAMAC) | |
| Hardness DIDC, points | -1/+5 | -5/+8 | -25/+1 | -5/+5 | As per Daimler-Chrysler |
| Tensile Strength, % | -50/+10 | -15/+18 | -45/+10 | -20/+10 | |
| Elongation at Rupture, % | -60/+10 | -35/+10 | -20/+10 | -50/+10 | |
| Volume Variation, % | -1/+5 | -7/+5 | -1/+30 | -5/+5 | |
Notes: Use either complete DaimlerChrysler
requirements [VDA 675301, 7 days ± 2h, 4 materials (NBR: NBR34 DIN 53538
T3 (100°C ± 2°C); FPM: AK6 (150°C ± 2°C); ACM: (100°C ± 2°C) E7503; AEM:
D 8948/200.1 (100°C ± 2°C)] + RE3 according to requirement 1.9 above, or
complete requirements according to 1.9 above + DC requirements for AEM.
New CEC RE3 material and limits are to be developed and added to
Sequences as soon as possible
For more information about oil/elastomer
compatibility evaluation (CEC L-39-T-96) capabilities at SwRI or how you can contract with SwRI,
please contact
Becky
Grinfield at
bgrinfield@swri.org or (210) 522-3652.
*Association des Constructeurs Européens d'Automobiles/European Automobile Manufacturers Association.
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Contact Information |
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Oil/Elastomer Compatibility Evaluation (CEC L-39-T-96) (210) 522-3652 |
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Related Terminology |
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CEC L-39-T-96 ACEA laboratory evaluations oil compatibility evaluations elastomer compatibility test lubricant analysis compatibility of lubricating oils compatibility of cured elastomers ACEA 2004 specifications standardized lubricant testing engine lubricants Association des Constructeurs Européens d'Automobiles European Automobile Manufacturers Association |
| Fuels and Lubricants Technology Department | Fuels and Lubricants Research Division | SwRI Home |
Southwest Research Institute® (SwRI®), headquartered in San Antonio, Texas, is a multidisciplinary, independent, nonprofit, applied engineering and physical sciences research and development organization with 11 technical divisions.
September 30, 2008