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Rubber Compounds

FFKM

Rubber Compound
PerFlourocarbon
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FKM

Rubber Compound
Fluorocarbon
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FVMQ

Rubber Compound
Fluorosilicone
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AEM

Rubber Compound
Ethylene Acrylic Elastomer (Vamac)
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ACM

Rubber Compound
Polyacrylate or Alkyl Acrylate Copolymer
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IIR

Rubber Compound

HNBR

Rubber Compound
Hydrogenated Nitrile Butadiene Rubber
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VMQ

Rubber Compound
Silicone
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NBR

Rubber Compound
Nitrile Butadiene Rubber
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EPDM

Rubber Compound
Ethylene Propylene Diene Monomer
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PRECIX® Rubber Compounds

Precix develops and manufactures a variety of rubber compounds to service a vast number of different industrial needs.  Learn more about our rubber compounds and about their properties below.

PerFlourocarbon (FFKM)

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 ClassCompound AliasDurometerColorSpecific GravityRecommended Min Operating Temp CºRecommended Max Operating Temp CºSpecification Approvals
FFKMP0375Black2.02-15320AMS7257
QPL Listed
FFKMP0470White2.02-15320
FFKMP0590Black2.03-15320

Fluorocarbon (FKM)

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 ClassCompound AliasDurometerColorSpecific GravityRecommended Min Specified Operating Temp CºRecommended Max Specified Operating Temp CºSpecification Approvals
FKMF0575Blue2.20-40250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5505
FKMF1070Black1.83-25250TORV-366-087
KSR1061
FKMF1565Blue1.46-10250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5506
FKMF2060Black1.095250TORV-366-087
KSR1062
FKMF2555Blue0.7220250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5507
FKMF3050Black0.3535250TORV-366-087
KSR1063
FKMF3545Blue-0.0250250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5508
FKMF4040Black-0.3965250TORV-366-087
KSR1064
FKMF4535Blue-0.7680250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5509
FKMF5030Black-1.1395250TORV-366-087
KSR1065
FKMF5525Blue-1.50110250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5510
FKMF6020Black-1.87125250TORV-366-087
KSR1066
FKMF6515Blue-2.24140250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5511
FKMF7010Black-2.61155250TORV-366-087
KSR1067
FKMF755Blue-2.98170250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5512
FKMF800Black-3.35185250TORV-366-087
KSR1068
FKMF85-5Blue-3.72200250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5513
FKMF90-10Blue-4.09215250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5506
FKMF95-15Black-4.46230250TORV-366-087
KSR1062
FKMF100-20Blue-4.83245250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5507
FKMF105-25Black-5.20260250TORV-366-087
KSR1063
FKMF110-30Blue-5.57275250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5508
FKMF115-35Black-5.94290250TORV-366-087
KSR1064
FKMF120-40Blue-6.31305250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5509
FKMF125-45Black-6.68320250TORV-366-087
KSR1065
FKMF130-50Blue-7.05335250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5510
FKMF135-55Blue-7.42350250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5506
FKMF140-60Black-7.79365250TORV-366-087
KSR1062
FKMF145-65Blue-8.16380250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5507
FKMF150-70Black-8.53395250TORV-366-087
KSR1063
FKMF155-75Blue-8.90410250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5508
FKMF160-80Black-9.27425250TORV-366-087
KSR1064
FKMF165-85Blue-9.64440250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5509
FKMF170-90Black-10.01455250TORV-366-087
KSR1065
FKMF175-95Blue-10.38470250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5510
FKMF180-100Black-10.75485250TORV-366-087
KSR1066
FKMF185-105Blue-11.12500250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5511
FKMF190-110Black-11.49515250TORV-366-087
KSR1067
FKMF195-115Blue-11.86530250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5512
FKMF200-120Blue-12.23545250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5506
FKMF205-125Black-12.60560250TORV-366-087
KSR1062
FKMF210-130Blue-12.97575250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5507
FKMF215-135Black-13.34590250TORV-366-087
KSR1063
FKMF220-140Blue-13.71605250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5508
FKMF225-145Black-14.08620250TORV-366-087
KSR1064
FKMF230-150Blue-14.45635250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5509
FKMF235-155Black-14.82650250TORV-366-087
KSR1065
FKMF240-160Blue-15.19665250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5510
FKMF245-165Blue-15.56680250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5506
FKMF250-170Black-15.93695250TORV-366-087
KSR1062
FKMF255-175Blue-16.30710250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5507
FKMF260-180Black-16.67725250TORV-366-087
KSR1063
FKMF265-185Blue-17.04740250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5508
FKMF270-190Black-17.41755250TORV-366-087
KSR1064
FKMF275-195Blue-17.78770250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5509
FKMF280-200Black-18.15785250TORV-366-087
KSR1065
FKMF285-205Blue-18.52800250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5510
FKMF290-210Black-18.89815250TORV-366-087
KSR1066
FKMF295-215Blue-19.26830250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5511
FKMF300-220Blue-19.63845250 Delphi M54453,
BMW GS 93010 5516-FPM-70-M
BMW GS 93010-5506
FKMF305-225Black-20.00860250TORV-366-087
KSR1062

Flourosilicones (FVMQ)

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 ClassCompound AliasDurometerColorSpecific GravityRecommended Minimum Operating Temp CºRecommended Maximum Operating Temp CºSpecification Approvals
FVMQG0460Blue1.46-60200M25988/3
Boeing Approved
COMAC Approved
QPL Listed
MIL-DTL-25988/3,AMS-R-25988/3,MIL-DTL-25988C
AMS25988 Cl1 Gr60
AMS3325
FVMQG1670Blue1.50-60200MIL-DTL-25988/1
Boeing Approved
COMAC Approved
QPL Listed
JISK6251,K6252,K6253,K6257,K6258
MIL-DTL-25988C
AMS-R-25988 Cl1 Gr70
FVMQG1780Yellow1.61-60200GM6268 & 6269M Type II, GMW14754 Type B, BMW GS 93010 5519-FMQ-75-M,
WSA-M2D401-A6
FVMQG2075Blue1.63-60200AS9966
AS9967
AMS7273
QPL Listed
FVMQG2175Blue1.63-60200 MIL-R-25988/2
Boeing Approved
COMAC Approved
QPL Listed
FVMQG2280Blue1.61-65225Airbus WL 5.5813
NF L17-261 Class 61.D.8
FVMQG8773Blue1.54-60200BMW N 602 00.0 55.19
GM6268M TYPE 2
GM6269M TYPE 2
WSA-M2D401-A6
FVMQG8880Blue1.80-60200M25988/4
Boeing Approved
COMAC Approved
QPL Listed
MIL-DTL-25988/4,AMS-R-25988/4, MIL-DTL-25988C
AMS 25988 Cl1 Gr80
FVMQL10160Blue1.40-60200
FVMQL5473Yellow1.54-60200GM6268M TYPE 2
GMW14754 Type B
WSA-M2D401-A6
FVMQL6173Green1.54-60200GM6268M TYPE 2
GM6269M TYPE 2
FVMQL9770Green1.45-60200

Vamac (AEM)

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 ClassCompound AliasDurometerColorSpecific GravityRecommended Minimum Operating Temp CRecommended Maximum Operating Temp CSpecification Approvals
AEMM10470Black1.23-51177WSD-M2D447-A
AEMM8670Black1.34-51177
AEMM9470Black1.21-51177DaimlerChrysler MSBZ623 Gr A
Ford WSD-M2D447-A
AEMM9550Black1.18-51177
AEMM9670Black1.20-51177

Polyacrylate or Alkyl Acrylate Copolymer (ACM)

Polyacrylate elastomers, another member of the specialty category, are known for their higher performance. Their combination of higher heat resistance, along with excellent compatibility with sulfur bearing oils and lubricants, makes them a mainstay in many automotive areas. These include transmission application. A weakness can be their low temperature capability, as well as their sometimes challenging processing behavior.

Polymer ClassCompound AliasDurometerColorSpecific GravityRecommended Min Operating Temp C°Recommended Max Operating Temp C°Specification Approvals
ACMA2570Black1.28-40150

Butyl (IIR)

Butyl elastomers are characterized by their outstanding impermeability to gas penetration and high damping ability in dynamic applications. Butyl rubber also possesses corrosive chemical resistance. While this combination of properties is unique, the heat resistance of butyl rubber has limited its usage.

Polymer ClassCompound AliasDurometerColorSpecific GravityRecommended min Operating Temp CºRecommended max Operating Temp CºSpecification Approvals
IIRB4870Black1.24-50121

Highly Saturated Nitrile (HNBR)

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 ClassCompound AliasDurometerColorSpecific gravityRecommended Minimum Operating Temp CºRecommended Maximum Operating Temp CºSpecification Approvals
HNBRH10170Black1.30-42150
HNBRH10775Black1.28-32150CS41128
HNBRH10975Black1.28-32150CS40187-Black
HNBRH11375Green1.24-32150GMW3275-56-53-38-50
Bosch GW32-017
HNBRH15070Yellow1.35-32150
HNBRH6180Black1.20-32150MS BZ 105
HNBRH7670Black1.24-34150ESW-M2D100-A
JIS B2401 Type 1A
1E2760
HNBRM2770Black1.19-32150Ford ESWM2D247 Type I
M27001X
HNBRM2975Black1.18-34150Ford ESWM2D247 Type III
HNBRM3070Black1.19-35150 WSS-M2D451-B2
KSR1015
HNBRM8475Green1.30-32150
HNBRM9170Black1.24-32150
HNBRM9880Black1.19-32150Ford WSA-M2D451-A2

Silicone (VMQ)

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 ClassCompound AliasDurometerColorSpecific GravityRecommended Minimum Operating Temp CRecommended Maximum Operating Temp CSpecification Approvals
VMQL10770Red1.40-65225AMS 3304, AMS 3337, AMS 3357, AMS 7268
A-A-59588 Class 2A, Grade 70
A-A-59588 Class 2B, Grade 70
VMQL10875Red1.43-65225AMS 7267
VMQL1370Red1.27-65225
VMQL3570Red1.31-65225
VMQL9550Red1.22-65225HS701

Nitrile (NBR)

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 ClassCompound AliasDurometerColorSpecific GravityRecommended Minimum Operating Temp CRecommended Maximum Operating Temp CSpecification Approvals
NBRH10280Black1.26-34125HS163 Type A
NBRH10370Black1.29-25125
NBRH11170Black1.17-25125
NBRH11265Black1.27-34125Hamilton HS445
NBRH12370Black1.28-25125
NBRH15485Black1.29-25125HS163, TY C
NBRH15670Black1.24-25125
NBRH15790Black1.31-5470AMS-P-5510A
NBRH1675Black1.31-29125
NBRH1970Black1.28-25125MS-BZ-105 Grade C
NBRH6760Black1.19-25125
NBRH6970Black1.25-25125KSR1015
Daimler Chrysler MSBZ105G
JIS B2401 Class 2
NBRM0770Black1.25-34125UL Recognized
NBRM3170Black1.28-54135Mil-PRF-25732 Rev.C

Ethylene Propylene (EPDM)

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 ClassCompound AliasDurometerColorSpecific GravityRecommended Minimum Operating Temp CºRecommended Maximum Operating Temp CºSpecification Approvals
EPDME15070Black1.06-46150ZF 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
EPDME15280Black1.16-46150ZF TS2-18-037
ZF S-12815501
EPDME15470Black1.09-55150
EPDME15680Black1.11-46150ZF TS2-18-137
ZF TS2-18-036
EPDME15870Black1.08-46150
EPDME16160Black1.06-46150
EPDME16275Black1.12-46150
EPDME16950Black1.07-46150
EPDME17280Black1.15-46150
EPDME17487Black1.18-46150ZF TS2-18-132
EPDME17670Purple1.12-46150WSS-M9P12-A2 & A3 - CSR in Coolant & Hot Air - On Ford Approved Source List
EPDME17775Red1.23-46150
EPDME17860Black1.11-46150
EPDME17980Black1.18-46150
EPDME18080Black1.13-46150
EPDME18187Black1.18-46150ZF TS2-18-132
EPDME18260Black1.07-46150Stellantis 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
EPDME18360Purple1.16-46150
EPDME18450Black1.02-46150
EPDME2370Black1.11-46150
EPDME3470Black1.09-46150UL Recognized
EPDME4270Black1.09-46150GMW14747 Type C
EPDME6170Black1.06-46150ITT-QC-100-101
EPDME7060Black1.10-46150Renault Specification 18-32-423
EPDME7470Black1.07-46150
EPDME8870Purple1.09-46150WSS-M9P12-A2 & A3 - CSR in Coolant & Hot Air - On Ford Approved Source List
Approved to GMW14747 Type E for Coolant

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