Precix has a very extensive database of Automotive Original Equipment Manufacturer (OEM) material approvals. Below is the most current listing. Be sure to check back often for updates. As new approvals are achieved they will be highlighted in yellow.
Questions or comments? Please click here to contact our Materials Engineering department.
Vamac® materials, a relatively new elastomer family, is an up-and-coming specialty player.
While the high temperature resistance is in the same league as other specialty elastomers, its unique combination of good oil resistance coupled with strong low temperature capability affords an unusual combination of properties.
Also noteworthy is the damping capability in dynamic applications. The use of Vamac® has grown as the processing challenges have been minimized.
| Polymer Class | Compound Alias | Durometer | Color | Specific Gravity | Recommended Min Operating Temp C° | Recommended Max Operating Temp C° | Specification Approvals |
|---|---|---|---|---|---|---|---|
| AEM | M104 | 70 | Black | 1.23 | -51 | 177 | WSD-M2D447-A |
| AEM | M94 | 70 | Black | 1.21 | -51 | 177 | DaimlerChrysler MSBZ623 Gr A Ford WSD-M2D447-A |
EPOM elastomers are general purpose materials with excellent weathering characteristics for outdoor applications. As a family, EPDMs possess strong resistance to water and steam, as well as good resistance to most acids and alkalies. Their “polar” fluid resistance extends to materials such as automotive brake fluid and anti-freeze. These characteristics, along with moderate temperature resistance, make EPDM a niche player in the O-Ring sealing world.
| Polymer Class | Compound Alias | Durometer | Color | Specific Gravity | Recommended Min Operating Temp C° | Recommended Max Operating Temp C° | Specification Approvals |
|---|---|---|---|---|---|---|---|
| EPDM | E150 | 70 | Black | 1.06 | -46 | 150 | ZF TS2-18-035 ZF TS2-18-036 Bosch ES-1736 WSS-M9P12-A2 & A3 - CSR in Coolant & Hot Air - On Ford Approved Source List Approved to GMW14747 Type C for Coolant Approved to Stellantis EPDM-2-135C Coolant Approved to Stellantis EPDM-3-135C Brake Fluid |
| EPDM | E152 | 80 | Black | 1.16 | -46 | 150 | ZF TS2-18-037 ZF S-12815501 |
| EPDM | E156 | 80 | Black | 1.11 | -46 | 150 | ZF TS2-18-137 ZF TS2-18-036 |
| EPDM | E174 | 87 | Black | 1.18 | -46 | 150 | ZF TS2-18-132 |
| EPDM | E176 | 70 | Purple | 1.12 | -46 | 150 | WSS-M9P12-A2 & A3 - CSR in Coolant & Hot Air - On Ford Approved Source List |
| EPDM | E181 | 87 | Black | 1.18 | -46 | 150 | ZF TS2-18-132 |
| EPDM | E182 | 60 | Black | 1.07 | -46 | 150 | Stellantis EPDM2 seal-135C - Coolant Stellantis EPDM3 seal-135C - Brake Fluid Ford WSS-M9P12-A2,A3 - CSR in Hot Air & Coolant On Ford Approved Source List |
| EPDM | E34 | 70 | Black | 1.09 | -46 | 150 | UL Recognized |
| EPDM | E42 | 70 | Black | 1.09 | -46 | 150 | GMW14747 Type C |
| EPDM | E61 | 70 | Black | 1.06 | -46 | 150 | ITT-QC-100-101 |
| EPDM | E70 | 60 | Black | 1.10 | -46 | 150 | Renault Specification 18-32-423 |
| EPDM | E88 | 70 | Purple | 1.09 | -46 | 150 | WSS-M9P12-A2 & A3 - CSR in Coolant & Hot Air - On Ford Approved Source List Approved to GMW14747 Type E for Coolant |
Perfluorinated polymers have been designed for very demanding sealing applications in aggresive chemical and high heat enviroments. They are resistant to attack by nearly all chemical reagents, including organic and inorganic acids, alkalines, ketones, esters, alcohols, fuels and hot waters.
The primary uses for these high performance materials are as O-rings, seals, diaphragms, packings and other molded parts used in the chemical processing, aerospace and semiconductor industries.
| Polymer Class | Compound Alias | Durometer | Color | Specific Gravity | Recommended Min Operating Temp C° | Recommended Max Operating Temp C° | Specification Approvals |
|---|---|---|---|---|---|---|---|
| FFKM | P03 | 75 | Black | 2.02 | -15 | 320 | AMS7257 QPL Listed |
The fluorocarbon elastomer family is the highest performance material available. Their high temperature performance is unmatched by any other polymer family, as is their versatile fluid resistance. recent developments in fluorocarbon offerings have minimized the low temperature concerns. Additionally, by altering the fluorocarbon polymer chemistry, fluid resistance for both alkali materials and “polar” solvents has been added to the already strong repertoire of capabilities. While as a class of elastomers their cost is high, their properties are top notch. Precix specializes in fluorocarbons and possesses an unmatched product line offering.
| Polymer Class | Compound Alias | Durometer | Color | Specific Gravity | Recommended Min Operating Temp C° | Recommended Max Operating Temp C° | Specification Approvals |
|---|---|---|---|---|---|---|---|
| FKM | F05 | 75 | Blue | 2.20 | -40 | 250 | Delphi M54453, BMW GS 93010 5516-FPM-70-M BMW GS 93010-5505 |
| FKM | F10 | 70 | Black | 1.83 | -25 | 250 | TORV-366-087 KSR1061 |
| FKM | F105 | 90 | Black | 1.87 | -25 | 250 | John Deere JDM H4R; Cleanliness per JDS-G169, Class 6.6 |
| FKM | F113 | 75 | Green | 2.11 | -32 | 250 | Delphi M54498 |
| FKM | F118 | 80 | Blue | 2.14 | -32 | 250 | Delphi M54427 |
| FKM | F12 | 75 | Brown | 2.03 | -22 | 250 | WSA-M2D401-A8 |
| FKM | F122 | 80 | Black | 1.88 | -35 | 250 | MSP24100936 |
| FKM | F133 | 95 | Black | 1.98 | -25 | 250 | NACE, API 6A |
| FKM | F139 | 75 | Black | 1.82 | -40 | 250 | AMS7379 (QPL Listed) |
| FKM | F148 | 80 | Black | 1.83 | -22 | 250 | NACE, API 6A |
| FKM | F161 | 90 | Black | 1.85 | -22 | 250 | MIL-R-83248 TY1 CL2 superseded by AMS7259; HS757, Type B; HS3676, TY A |
| FKM | F178 | 75 | Black | 1.90 | -22 | 250 | VW 2.8.1 A/T-75 |
| FKM | F19 | 75 | Black | 1.74 | -40 | 250 | AMS7287 (QPL Listed) AMS-R-83485 (M83485/1) GE A50TF327 CL-A (J1438) |
| FKM | F52 | 75 | Brown | 1.82 | -22 | 250 | UL Recognized GM6268M Type-1 GMW14754 Type A |
| FKM | F57 | 70 | Green | 2.06 | -25 | 250 | Delphi/Saginaw 7846478 SSG7846478 |
| FKM | F61 | 75 | Black | 1.85 | -22 | 250 | BMW 93010 5516-FPM-75-M |
| FKM | F68 | 80 | Black | 1.91 | -22 | 250 | UL Recognized |
| FKM | F75 | 75 | Black | 1.85 | -25 | 250 | AMS7276 (QPL Listed) ST1000 AMS7278, AMS7280 MIL-R-83248 superseded by AMS-R-83248 superseded by AMS7276 (QPL Listed) -Meets AS871 - RoHS Compliant AS3208 AS3209 UL Recognized AMS3216 M54444 GMW16163 Type B Grade Bg WSS-M9P12-A1 and A3 Ford Approved Source List |
| FKM | F77 | 75 | Gray | 2.09 | -32 | 250 | Ford WSAM2D401A5 GM6269 TYPE 1 |
| FKM | F78 | 75 | Black | 1.86 | -32 | 250 | Ford WSAM2D401A5 GM6269M Type I UL Recognized |
| FKM | F79 | 80 | Black | 1.86 | -40 | 250 | M54453 |
| FKM | F84 | 75 | Black | 1.85 | -22 | 250 | Delphi M54444 MS-BZ832 GRADE A3 ULS-02-01-008 |
| FKM | F86 | 75 | Green | 2.00 | -22 | 250 | Ford WSAM2D401A8 GM/Opel 6268 & 6269M Type III GMW14754 Type E BMW GS 93010 5505-FPM-75-M HES C 211-00 FKM-F UL recognized |
| FKM | F90 | 90 | Black | 1.85 | -22 | 250 | AMS7259 (QPL Listed) - AS3581 MIL-R-83248 TY1 CL2 became AMS-R-83248 TY1 CL2 became AMS7279 became AMS7259 (QPL Listed) HS3676, TYPE A |
| FKM | F91 | 80 | Black | 1.81 | -25 | 250 | AS43003 AS43013 (DTD 5613A, Grade 80), DTD 5612a BAE Approved (British Air) |
| FKM | F95 | 65 | Red | 2.03 | -22 | 250 | Volkswagen/Audi 2.8.1 – A/T 70 |
| FKM | F98 | 80 | Black | 1.95 | -22 | 250 | Bosch 0 580 P00 024, BMW GS 93010 5505 (fuel applications) & 5521 (diesel applications) -FPM-80-M GMW14754 Type C |
| FKM | F99 | 65 | Green | 2.03 | -22 | 250 | GM6268M Type IV MS269-03 |
This specialty elastomer takes the strong properties of silicone rubber elastomers and adds fuel resistance to the mix. The resulting combination affords outstanding low temperature flexibility and extremely good fuel and oil resistance. Gasohol resistance is also noteworthy. While fluorosilicones were previously thought of as “fragile” elastomers, tougher versions are also now available. Their high performance also means higher cost.
| Polymer Class | Compound Alias | Durometer | Color | Specific Gravity | Recommended Min Operating Temp C° | Recommended Max Operating Temp C° | Specification Approvals |
|---|---|---|---|---|---|---|---|
| FVMQ | G04 | 60 | Blue | 1.46 | -60 | 200 | M25988/3 Boeing Approved COMAC Approved QPL Listed MIL-DTL-25988/3,AMS-R-25988/3,MIL-DTL-25988C AMS25988 Cl1 Gr60 AMS3325 |
| FVMQ | G16 | 70 | Blue | 1.50 | -60 | 200 | MIL-DTL-25988/1 Boeing Approved COMAC Approved QPL Listed JISK6251,K6252,K6253,K6257,K6258 MIL-DTL-25988C AMS-R-25988 Cl1 Gr70 |
| FVMQ | G17 | 80 | Yellow | 1.61 | -60 | 200 | GM6268 & 6269M Type II, GMW14754 Type B, BMW GS 93010 5519-FMQ-75-M, WSA-M2D401-A6 |
| FVMQ | G20 | 75 | Blue | 1.63 | -60 | 200 | AS9966 AS9967 AMS7273 QPL Listed |
| FVMQ | G21 | 75 | Blue | 1.63 | -60 | 200 | MIL-R-25988/2 Boeing Approved COMAC Approved QPL Listed |
| FVMQ | G22 | 80 | Blue | 1.61 | -65 | 225 | Airbus WL 5.5813 NF L17-261 Class 61.D.8 |
| FVMQ | G87 | 73 | Blue | 1.54 | -60 | 200 | BMW N 602 00.0 55.19 GM6268M TYPE 2 GM6269M TYPE 2 WSA-M2D401-A6 |
| FVMQ | G88 | 80 | Blue | 1.80 | -60 | 200 | M25988/4 Boeing Approved COMAC Approved QPL Listed MIL-DTL-25988/4,AMS-R-25988/4, MIL-DTL-25988C AMS 25988 Cl1 Gr80 |
| FVMQ | L54 | 73 | Yellow | 1.54 | -60 | 200 | GM6268M TYPE 2 GMW14754 Type B WSA-M2D401-A6 |
| FVMQ | L61 | 73 | Green | 1.54 | -60 | 200 | GM6268M TYPE 2 GM6269M TYPE 2 |
This relatively new family of elastomers is a step function improvement over the perviously discussed nitrile family. On paper, the improvements in both high temperature capability and low temperature brittleness are moderate. However, the “hydrogenation process” also affords a more stable elastomer, for fluids additives. This higher cost material has seen strong growth in the automotive industry, for fuel, oil, and other applications.
| Polymer Class | Compound Alias | Durometer | Color | Specific Gravity | Recommended Min Operating Temp C° | Recommended Max Operating Temp C° | Specification Approvals |
|---|---|---|---|---|---|---|---|
| HNBR | H107 | 75 | Black | 1.28 | -32 | 150 | CS41128 |
| HNBR | H109 | 75 | Black | 1.28 | -32 | 150 | CS40187-Black |
| HNBR | H113 | 75 | Green | 1.24 | -32 | 150 | GMW3275-56-53-38-50 Bosch GW32-017 |
| HNBR | H61 | 80 | Black | 1.20 | -32 | 150 | MS BZ 105 |
| HNBR | H76 | 70 | Black | 1.24 | -34 | 150 | ESW-M2D100-A JIS B2401 Type 1A 1E2760 |
| HNBR | M27 | 70 | Black | 1.19 | -32 | 150 | Ford ESWM2D247 Type I M27001X |
| HNBR | M29 | 75 | Black | 1.18 | -34 | 150 | Ford ESWM2D247 Type III |
| HNBR | M30 | 70 | Black | 1.19 | -35 | 150 | WSS-M2D451-B2 KSR1015 |
| HNBR | M98 | 80 | Black | 1.19 | -32 | 150 | Ford WSA-M2D451-A2 |
Nitrile elastomers encompass a large family of materials that have been a work horse in the fluid sealing arena.
While the temperature resistance is only moderate, the choice of the particular material, along with compounding, provides a wide range of properties. Most notable is their fuel and oil resistance, which ranges from moderate to excellent, depending on the particular nitrile chosen.
Nitrile polymers remain a cost-efficient means of fuel and oil sealing, as long as the limited high heat resistance is not a hindrance to performance.
| Polymer Class | Compound Alias | Durometer | Color | Specific Gravity | Recommended Min Operating Temp C° | Recommended Max Operating Temp C° | Specification Approvals |
|---|---|---|---|---|---|---|---|
| NBR | H102 | 80 | Black | 1.26 | -34 | 125 | HS163 Type A |
| NBR | H112 | 65 | Black | 1.27 | -34 | 125 | Hamilton HS445 |
| NBR | H154 | 85 | Black | 1.29 | -25 | 125 | HS163, TY C |
| NBR | H157 | 90 | Black | 1.31 | -54 | 70 | AMS-P-5510A |
| NBR | H19 | 70 | Black | 1.28 | -25 | 125 | MS-BZ-105 Grade C |
| NBR | H69 | 70 | Black | 1.25 | -25 | 125 | KSR1015 Daimler Chrysler MSBZ105G JIS B2401 Class 2 |
| NBR | M07 | 70 | Black | 1.25 | -34 | 125 | UL Recognized |
| NBR | M31 | 70 | Black | 1.28 | -54 | 135 | Mil-PRF-25732 Rev.C |
Silicone elastomers represent a large family of higher performance, higher cost materials. They are characterized by their large operating temperature range, with the best low temperature capability of all elastomers, as well as strong high temperature performance. They also possess good oil resistance. Silicone elastomers are available in a variety of colors, as they do not require the traditional “carbon black” for strength building purposes. Besides the automotive industry, both health care and electrical applications are heavy silicone elastomer users. While not as “mechanically though” as other elastomers, it is their wide temperature capability that cements their nice in the marketplace.
| Polymer Class | Compound Alias | Durometer | Color | Specific Gravity | Recommended Min Operating Temp C° | Recommended Max Operating Temp C° | Specification Approvals |
|---|---|---|---|---|---|---|---|
| VMQ | L107 | 70 | Red | 1.40 | -65 | 225 | AMS 3304, AMS 3337, AMS 3357, AMS 7268 A-A-59588 Class 2A, Grade 70 A-A-59588 Class 2B, Grade 70 |
| VMQ | L108 | 75 | Red | 1.43 | -65 | 225 | AMS 7267 |
| VMQ | L95 | 50 | Red | 1.22 | -65 | 225 | HS701 |
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