FKM Precompound

FKM Precompound
Product Details

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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