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FKM Precompound

  • Description
Product Detail

    Typical properties      (Note: not for specification purpose)

    Gumstock properties

    Grade

    HF-A361C

    HF-F2462P

    HF-A401C

    HF-F2602AP

    Solubility

    soluble in low molecular weight ketones, some ester

    Chlorine Content, %

    66

    69

    66

    66

    Specific Gravity

    1.82

    1.88

    1.82

    1.82

    Mooney Viscosity ML 1+10 @ 121 OC

    30

    40

    42

    38

    Recommended Vulcanization Formulation for test

    Precompounds            100 phr

    MT Carbon Black (N 990)     30 phr

    Ca(OH)2                6 phr

    MgO                   3 phr

    Rheological Properties (moving die rheometer, 177oC, 6 min.)


    Grade

    HF-A361C

    HF-F2462P

    HF-A401C

    HF-F2602AP

    ML, N.m

    0.22

    0.28

    0.30

    0.31

    MH, N.m

    1.95

    1.66

    2.92

    2.29

    T90

    1'49"

    1'57"

    1'55"

    1'55"

    Ts2

    0'59"

    0'52"

    0'55"

    0'57"

    Physical properties of vulcanizate

    Grade

    HF-A361C

    HF-F2462P

    HF-A401C

    HF-F2602AP

    press cure

    6 min. @177oC

    post cure

    24hr. @ 230oC

    24hr. @ 230oC / 12hr. @ 200oC

    Tensile Strength, MPa

    14.3

    14.0

    14.0

    14.0 / 13.0

    Elongation at Break, %

    230

    240

    190

    230 / 240

    Hardness, Shore A

    77

    79

    77

    76

    Compression Set after 70hr. @ 200oC aging, %

    16

    14

    15

    16

    Main grades and Applications

    HF-A361C:

    Excellent mold flow, good metal bonding and scorch safety

    Improved mold release, less mold fouling

    Recommended for compression or transfer molding of O-rings, gaskets. 

    HF-A401C:

    Excellent mold release, good scorch safety

    Recommended for compression or transfer molding of O-rings, gaskets. 

    HF-F2462P:

    Excellent mold release, good scorch safety.

    Recommended for sealing applications that require improved solvent resistance and permeation resistance to fuels, also for fuel tube extrusion 

    HF-F2602AP:

    Excellent mold flow, easier mold release, good scorch safety

    Recommended for sealing articles with multi-configuration

    Shanghai Fluorochem Industry Co.,Ltd supply high quality Precompound FKM, we can also customize Precompound FKM as per customer's different requirements.

    Processing

    •Our precompounds could be mixed with conventional fillers and other aids by rubber processing equipment.

    •Fillers and other additives should be mixed uniformly, then added in precompounds

    Processing methods: compression molding, transfer molding. Additionally, F2462P and F2602AP could be used in extrusion, A361C could be used in injection molding

    Package:

    Net 25kgs in cardboard cartons.



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Shanghai Fluorochem Industry Co.,Ltd

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