Ryertex is a family of thermoset laminate composites used mainly as electrical insulation or as a replacement to metal in wear applications where high speed, load, and temperatures are involved. Ryertex is used around the globe in a wide array of industrial applications to include steel, aluminum, and copper processing, paper and lumber mills, oil and gas, mining, military, aerospace, rail, locomotive, off-road and construction equipment.

The Ryertex line includes all NEMA electrically insulating grades with substrates including paper, cotton, linen, fiberglass, and aramid fiber. The resin system can be phenolic, epoxy, silicone, or melamine.

While Ryertex is a commonly recognized brand name, there are a number of other names in the marketplace that are thermoset laminate composites. These include: Micarta, Bakelite, “Phenolic”, Resiten, Garolite, Acculam, Lamitex, Gatke, Scan Pac, Spauldite, Phenolex, Tufnol, Lamigamid, Schwartz, Current, and Synthane. WS Hampshire can cross reference your requirements to the corresponding Ryertex offering.

Thermoset laminates were first developed by Leo Baekeland in 1907 when he introduced Bakelite, a non-flammable thermoset utilizing phenolic resin with a paper substrate. This material has been used in everything from engine parts to jewelry to electronics. Products that were originally made from Bakelite include telephone mouth and ear pieces, buttons, and frying pan handles.

Ryertex was first introduced in the 1930’s as a replacement to metal. Demand grew shortly thereafter as World War II put a strain on the nation’s metal supply and Ryertex was quickly seen as a replacement in a wide variety of industrial applications.

Today, Ryertex is a trade name of W.S. Hampshire who has built an outstanding reputation for producing high quality, custom fabricated parts for use in many industrial applications including bearings, bushings, and other wear parts.

 

Request Information    View Ryertex Product Catalog

 

  • Sheet Only
    Grade223CCECGHDAHDMLLEG3G5G7G9FR4G11S/TX
    ApplicationsMechanical grade, piston & packing rings, pump valve, doctor blades, stave and rudder bearings for marine industry.Mechanical grade, gears, pinions, spacers, structural, bearings, bushings, wear parts, electrical insulation.Mechanical/Electrical grade, small gears, pinions, radio parts, marine switch board panels, electrical insulation.Mechanical grade, bearings, bushings, wear parts where self lubrication and low coefficient of friction is necessary. Heavy industrial applications for bearings, bushings and wear parts that encounter high energy loads as the material possesses improved impact resistance and does not fatigue from repeated shock loads. Heavy industrial applications for bearings, bushings and wear parts that encounter high energy loads as the material possesses improved impact resistance and does not fatigue from repeated shock loads. Moly has been added to provide self lubricating properties. Mechanical grade, fine tooth gears, radio parts, terminal boards where tight tolerance and improved surface finish are required.Electrical/mechanical grade, marine relay bases, terminal bases & strips, radio parts, high humidity applications, electrical insulationMechanical grade, high temperature, low moisture absorbtion, gaskets, seals, structural, industrial wear partsElectrical/Mechanical grade, switch board panels, arc barriers, circuit breaker parts, structural & electrical parts, electrical insulation Electrical grade, class H insulation, heating/appliance insulation, electrical insulation Electrical/Mechanical Grade, marine switch board panels, structural parts, electrical insulationElectrical/mechanical grade, high humidity applications, power generation and transmission, electrical insulation, industrial wear partsElectrical /Mechanical grade, rotor slot insulation, structural members at elevated temperatures, UL listed, electrical insulationMechanical grade, high temperature, self lubricating bearings, bushings, wear parts.Mechanical grade, terminal boards, structural parts, switch bases, washers, panels, electrical insulation
    SubstrateCanvasCanvasCanvasCanvasCanvasCanvasLinenLinenFiberglassFiberglassFiberglassFiberglassFiberglassFiberglassAramidPaper
    ResinPhenolicPhenolicPhenolicPhenolicPhenolicPhenolicPhenolicPhenolicPhenolicMelamineSiliconeMelamineEpoxyEpoxyPhenolicPhenolic
    ModifierGraphiteAluminaMolybdenum DisulfideMolybdenum Disulfide
    Mil SpecMIL-P-18324D, ADM2MILI-24768/16FBMMIL-I-24768/14MIL-I-24768/15MIL-I-24768/13FBEMIL-I-24768/18MIL-I-24768/8GMGMIL-I-24768/18MIL-I-24768/1GMEMIL-I-24768/27 Type GEE-FMIL-I-24768/3 Type GEBMIL-I-24768/12PBM
    NEMACCE LLEG3 G5G7G9FR4G11 X
    FormSheetSheetSheet SheetSheetSheetSheetSheetSheetSheetSheetSheetSheetSheet SheetSheet
    PropertyTestUnits
    Physical propertiesSpecific Gravity ASTM D7921.441.371.371.401.421.401.341.341.801.901.881.901.851.801.541.40
    Rockwell Hardness ASTM D785 .250″ build upM Scale1051001009095801001001101151001151129590
    Moisture Absorbtion ASTM D570 Condition A%1.203.502.002.200.060.082.302.000.500.190.500.100.20
    ASTM D570 Condition D1-24/23%1.91.940.58
    IEC 60893-2/8.2 Condition Amg8.3
    Flexural Strength ASTM D790 Condition A, LW/CWpsi18,00018,000/17,00017,500/15,00019,000/15,00020,200/13,60016,200/12,70024,500/18,50022,000/16,00055,000/50,00070,500/63,20024,300/21,70070,500/63,20065,000/52,00068,100/61,30036,700/17,50034,000/28,000
    ASTM D790 Condition E-1/150: T-150, LW/CWpsi40,00029,200/15,500
    IEC 60893-2.5.1 Condition A, LW/CW480/390
    Flextural Modulus ASTM D790 Condition A, LW/CWkpsi1,600/1,5001,600/1,5001,200/1,0001,358/1,034937/8181,700/1,3001,600/1,2001,800/1,4002,000/1,7002,000/1,7002,900/2,6003,000/2,7001,900/1,400
    Tensile Strength ASTM D638 Condition A, LW/CWpsi12,00012,000/9,70011,000/9,00010,000/7,00011,400/11,30010,200/6,30014,000/10,00013,000/9,00042,000/34,00050,000/35,00050,000/35,00040,000/32,00043,000/37,00025,600/9,70017,000/13,000
    Flextural Modulus ASTM D790 Condition A, LW/CWkpsi1,600/1,5001,600/1,5001,200/1,0001,358/1,034937/8181,700/1,3001,600/1,2001,800/1,4002,000/1,7002,000/1,7002,900/2,6003,000/2,7001,900/1,400
    Izod Impact Strength ASTM D256 Condition A, LW/CWft-lb/in
    ASTM D256 Condition E-48/50, LW/CWft-lb/in2.00/1.23.10/2.701.70/1.51.7/1.46.36/2.836.00/2.891.70/1.351.35/1.1012.0/11.016.50/12.5017.00/11.5016.50/12.507.90/7.3012.0/9.022.90/7.30.82/.76
    IEC 60893-2.5.4.3 Condition A, LW/CW58/55
    Charpy Impact Strength IEC 60893-2.5.4.2 Condition A LW/CWkJ/m263/50
    Compressive Strength ASTM D695 Condition A, Flatwisepsi38,00034,00034,00038,00036,50034,00038,00036,00076,00085,00085,00066,00072,50040,70035,000
    Compressive Modulus ASTMD695 Condition Akpsi
    ASTM D229 Condition AASTM D229 Condition Alb1,7002,5001,7001,8002,3002,1002,0001,9001,5001,9007501,9002,3001,9002,4001,000
    ASTM D229 Condition D-48/50lb2,3001,7002,1002,000
    Shear Strength ASTM D732 Condition A, Perpendicularpsi13,00014,00014,00013,00013,90012,20013,50013,50018,00018,00018,00021,50022,00015,000
    Thermal PropertiesTemperature IndexUL Bulletin 746b Electrical/Mechanical°C125115/125115/125125125125115/125125140/170140170/220140130/140170/180165130/130
    Tg by DMACondition A°C130180
    Coefficient of Thermal ExpansionIPC-TM 650-2.4.24 X-axis/Y-axis“/”°Cx10-620.0/22.020/2218/2419.5/27.626.4/39.418.0/19.018.0/19.115.0/18.015.0/18.015.0/18.010.0/13.013/1527.0/39.813.0/17.0
    Flammability RatingUL Bulliten 94 Condition AClassHBHBHBHBHBHBHBHBHBHBHB
    Flammability VerticalIEC60893-2/7.2 Condition AClassV-0V-0V-0V-0
    Electrical PropertiesBreakdown VoltageASTM D149 Condition AkVolts2040455055705570666040
    ASTM D149 Condition D-48/50kVolts5325406532656555
    ASTM D149 Condition D-336/50kVolts
    IEC 60893-2/6.1 Condition AkV65
    Electric StrengthASTM D149 Condition AVolts/mil400550575625600540350540630700600
    ASTM D149 Condition D-48/50Volts/mil150300450500580550550670720
    IEC 60893-2/6.1 Condition A25
    Insulation ResistanceIEC 60893-2/6.3 Condition E-24/50:D-24/233.33×1013
    Arc ResistanceASTM D495 Condition Asec1515151510018520018513012090
    Comparative Tracking IndexASTM D3638Volts/mil155170170150600600600150
    Dissipation Factor @ 1 MHzASTM D150 Condition A0.018
    ASTM D150 Condition D-24/230.070.0657.030.0457.030.0320.02
    Relative Permittivity @ 1 MHzCondition A4.55
    Condition D-24/235.85.54.674.8
    Condition D-48/504.8

     

    This data, while believed to be accurate and based on reliable analytical methods, is for informational purposes only. Data supplied is “typical values” and not to be considered “specification values.” In order to assure that the material’s performance is adequate for a specific application, it is recommended that customers independantly verify characteristics of interest.

     

  • Tube Only
    GradeCCGHDAHDMLEG3G5G7G9G10S/T
    ApplicationsMechanical grade, gears, pinions, spacers, structural, bearings, bushings, wear parts, electrical insulation.Mechanical grade, bearings, bushings, wear parts where self lubrication and low coefficient of friction is necessary.Heavy industrial applications for bearings, bushings and wear parts that encounter high energy loads as the material possesses improved impact resistance and does not fatigue from repeated shock loads.Heavy industrial applications for bearings, bushings and wear parts that encounter high energy loads as the material possesses improved impact resistance and does not fatigue from repeated shock loads. Moly has been added to provide self lubricating properties.Electrical/mechanical grade, marine relay bases, terminlal bases & strips, radio parts, high humidity applications, electrical insulationMechanical grade, high temperature, low moisture absorbtion, gaskets, seals, structural, industrial wear partsElectrical/Mechanical grade, switch board panels, arc barriers, circuit breaker parts, structural & electrical parts, electrical insulationElectrical grade, class H insulation, heating/appliance insulation, electrical insulationElectrical/Mechanical Grade, marine switch board panels, structural parts, electrical insulationElectrical/Mechanical grade, terminal boards, high humidity applications, UL listed a 65M38 unclad, electrical insulation, foil lined material used in cryogenic insulationMechanical grade, high temperature, self lubricating bearings, bushings, wear parts.
    SubstrateCanvasCanvasCanvasCanvasLinenFiberglassFiberglassFiberglassFiberglassFiberglassAramid
    ResinPhenolicPhenolicPhenolicPhenolicEpoxyPhenolicMelamineSiliconeMelamineEpoxyPhenolic
    ModifierGraphiteAluminaMolybdenum DisulfideMolybdenum Disulfide
    Mil SpecMILI-24768/16FBMMIL-I-24768/13FBEMIL-I-24768/18MIL-I-24768/8GMGMIL-I-24768/18MIL-I-24768/1GMEMIL-I-24768-2
    NEMACLEG3G5G7G9G10
    FormTubeTubeTubeTubeTubeTubeTubeTubeTubeTubeTube
    PropertyTestUnits
    Physical propertiesSpecific GravityASTM D7921.301.281.331.341.331.801.881.931.951.801.35
    Rockwell HardnessASTM D785 .250″ build upM Scale909074801101051209511511070
    Moisture AbsorbtionASTM D570 Condition A%2.002.101.101.301.10
    ASTM D570 Condition D1-24/23%1.150.20.80.11.00.14
    IEC 60893-2/8.2 Condition Amg
    Flexural StrengthASTM D790 Condition A, LW/CWpsi11,000/8,700
    ASTM D790 Condition E-1/150: T-150, LW/CWpsi
    IEC 60893-2.5.1 Condition A, LW/CW
    Flextural ModulusASTM D790 Condition A, LW/CWkpsi750/500
    Tensile StrengthASTM D638 Condition A, LW/CWpsi7,7007,9004,1005,50010,00038,50027,00023,50026,50039,5007,400
    Izod Impact StrengthASTM D256 Condition A, LW/CWft-lb/in
    ASTM D256 Condition E-48/50, LW/CWft-lb/in
    IEC 60893-2.5.4.3 Condition A, LW/CW
    Charpy Impact StrengthIEC 60893-2.5.4.2 Condition A LW/CWkJ/m2
    Compressive StrengthASTM D695 Condition A, Flatwisepsi25,50024,00022,00018,50030,00038,00026,50012,00033,50042,50020,000/30,000
    Compressive ModulusASTMD695 Condition Akpsi3504153603503808501,0002901,0001,100600/440
    Bonding StrengthASTM D229 Condition Alb
    ASTM D229 Condition D-48/50lb
    Shear StrengthASTM D732 Condition A, Perpendicularpsi
    Thermal PropertiesTemperature IndexUL Bulletin 746b Electrical/Mechanical°C140/140140140140135180/160150170/220150200165
    Tg by DMACondition A°C≥170
    Coefficient of Thermal ExpansionIPC-TM 650-2.4.24 X-axis/Y-axis“/”°Cx10-6
    Flammability RatingUL Bulliten 94 Condition AClassHBHBHBHBHBHBV-0V-0V-0HB
    Flammability VerticalIEC60893-2/7.2 Condition AClass
    Electrical PropertiesBreakdown VoltageASTM D149 Condition AkVolts5560
    ASTM D149 Condition D-48/50kVolts3065
    ASTM D149 Condition D-336/50kVolts50
    IEC 60893-2/6.1 Condition AkV
    Electric StrengthASTM D149 Condition AVolts/mil135285400315185350400
    ASTM D149 Condition D-48/50Volts/mil220350315120340380
    IEC 60893-2/6.1 Condition A
    Insulation ResistanceIEC 60893-2/6.3 Condition E-24/50:D-24/23
    Arc ResistanceASTM D495 Condition Asec
    Comparative Tracking IndexASTM D3638Volts/mil
    Dissipation Factor @ 1 MHzASTM D150 Condition A0.024
    ASTM D150 Condition D-24/230.034
    Relative Permittivity @ 1 MHzCondition A4.39
    Condition D-24/23
    Condition D-48/504.46

     

    This data, while believed to be accurate and based on reliable analytical methods, is for informational purposes only. Data supplied is “typical values” and not to be considered “specification values.” In order to assure that the material’s performance is adequate for a specific application, it is recommended that customers independantly verify characteristics of interest.