Tecnoflon® FKM Ionic Curable

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Tecnoflon® FKM Ionic Curable grades are copolymers and terpolymers with a fluorine content range from 66% to 70% and are well suited for automotive, industrial and aerospace applications. The HS copolymers are designed for low post-cure cycles and cure-incorporated and rubber-to-metal bonding grades are available for all molding techniques.


Tecnoflon® FKM & PFR FFKM Technical Data Sheets


Copolymers & Terpolymers

Tecnoflon® FKM copolymers are based on vinylidene fluoride and hexafluoropropylene with fluorine content of 66%. There are two types of copolymers: cure incorporated and non-cure incorporated (gumstock).  

Tecnoflon® FKM ionic curable terpolymers are based on vinylidene fluoride, hexafluoropropylene and tetrafluoroethylene with fluorine content between 68% to 70%. There are two types of terpolymers: cure incorporated and non-cure incorporated (gumstock).


Fluoroelastomers Fluorine Content [%]

GF-Tecnoflon-methanol


Thermal Rating

GF_Tecnoflon_ThermalRate


Tecnoflon® FOR grades selection chart

Tecnoflon-FOR-grades-selection-chart



Processing

Readily processable:Tecnoflon® Ionic Curable FKMs can be processed by conventional rubber processing methods.

Compression Molding:Compression molding is the oldest and most common form of molding of FKMs.

Transfer Molding:A medium viscosity polymer is recommended. A careful consideration of cure rate is important to ensure scorch safety.

Injection Molding:Injection molding is the most demanding molding process. The injection molding grade selected should have a molecular weight distribution to achieve the best flow and good scorch safety with a very steep cure rate. Molding fouling must be minimized by using formulations minimizing process aids and metal oxides.

Extrusion:Extrusion of FKMs is used to form extruded shapes, tubing, O-ring cord, and compression molding pre-forms.

Tecnoflon® FKM Ionic Curable Typical Properties

Base Copolymers

PropertyN 215/UN 535N 935NHN 60HSN 90HS
Mooney Visc. (1+10) at 121°C (MU)
ASTM D1646
102745622745
Tensile Strength (MPa)
ASTM D412C
14.517.518.519.516.015.0
Elongation at Break (%)
ASTM D412C
190185170190220190
Hardness (Shore A)
ASTM 2240
737476756970
Compression set, 70h at 200°C on #214 O-Ring (%)
ASTM D395, Method B
221416131314
TR10 (°C)
ASTM D1329
-17-17-17-17-17-17
Compliance FDA*FDA*FDA*FDA*FDA*
* With compliant curatives only

Cure incorporated Copolymers

PropertyFOR 210FOR 335FOR 539FOR 4353FOR 5351FOR 60K/UFOR 5312KFOR 7353
Mooney viscosity (MU)
(1+10) at 121°C
1020202024314238
Cure rateSlowSlowMediumMediumFastSlowMediumFast
Tensile strength (MPa)
ASTM D412C
15.017.016.515.516.017.517.518.0
Elongation at break (%)
ASTM D412C
185170190175250225225180
Hardness (Shore A)
ASTM 2240
7476767672727478
Compression set, 70h at 200°C on #214 O-Ring (%)
ASTM D395, Method B
2216181518181816
TR10 (°C)
ASTM D1329
-17-17-17-17-17-17-17-17
Compliance   FDA   FDA

HS Grades

PropertyFOR 501HSFOR 50HSFOR 801HSFOR 80HSFOR 900HS
Mooney viscosity (MU)
(1+10) at 121°C
2323403853
Cure rate     
Tensile strength (MPa)
ASTM D412C
15.018.017.518.016.5
Elongation at break (%)
ASTM D412C
270230260200305
Hardness (Shore A)
ASTM 2240
6970657169
Compression set, 70h at 200°C on #214 O-Ring (%)
ASTM D395, Method B
1713171316
TR10 (°C)
ASTM D1329
-17-17-17-17-17

Base Terpolymers

PropertyTN 50ATNT 538T 938
Fluorine content (Weight %)68.068.068.568.5
Specific gravity (g/cm3)
ASTM D792
1.861.861.881.88
Mooney viscosity (MU)
(1+10) at 121°C
23672666
Tensile strength (MPa)
ASTM D412C
13.518.012.015.5
Elongation at break (%)
ASTM D412C
300230250220
Hardness (Shore A)
ASTM 2240
72777578
Compression set, 70h at 200°C on #214 O-Ring (%)
ASTM D395, Method B
29293124
TR10 (°C)
ASTM D1329
-14-14-13-13
Compliance FDA* FDA*
* With compliant curatives only

Cure Incorporated Terpolymers

PropertyFOR 7380KFOR 5381FOR 9385FFOR 9383FOR 4391
Fluorine content (Weight %)68.068.568.568.570
Specific gravity (g/cm3)
ASTM D792
1.861.881.881.881.89
Mooney viscosity (MU)
(1+10) at 121°C
3121456049
Cure rateMediumFastFastMediumFast
Tensile strength (MPa)
ASTM D412C
16.015.011.517.016.0
Elongation at break (%)
ASTM D412C
250200350285240
Hardness (Shore A)
ASTM 2240
7580757478
Compression set, 70h at 200°C on #214 O-Ring (%)
ASTM D395, Method B
3023403232
TR10 (°C)
ASTM D1329
-14-13-13-13-7

Bisphenol-Curable Low Temperature Terpolymers

PropertyT 636/LT636FOR 5361*FOR 636A*FOR TF636*
Mooney viscosity (MU)
(1+10) at 121°C
2234213031
Cure rate  FastMediumFast
Tensile strength (MPa)
ASTM D412C
17.518.518.020.018.5
Elongation at break (%)
ASTM D412C
190190175175165
Hardness (Shore A)
ASTM 2240
7374747476
Compression set, 70h at 200°C on #214 O-Ring (%)
ASTM D395, Method B
1513171613
TR10 (°C)
ASTM D1329
-19-19-19-19-19
* Cure incorporated)