Tecnoflon® FKM for Low Temperature

Tecnoflon® FKM Low Temperature grades are a wide portfolio including ionic and peroxide curable grades with TR10 range from -19°C to -40°C. They are specially designed for sealing solutions in oil drilling in cold environment as well as in the latest automotive engine technologies, like LPG, CNG and high-performance fuel injection systems.

The VPL Peroxide Curable grades are able to withstand the most stringent specifications for automotive and oil field applications, with TR10 down to -40°C and superior chemical resistance compared to standard low temperature FKM.

Tecnoflon® FKM & PFR FFKM Technical Data Sheets


Broad range of temperatures with no sacrifice in performance.

Tecnoflon® Low Temperature FKMs (VPL series) are designed for demanding sealing applications where they face temperatures as low as -40°C and aggressive chemicals found in Automotive, Oil & Gas and Aerospace environments.

Volume Swell in M15 [168H @23 °C]

GF-VolumeSwell


Processing

Readily processable: Tecnoflon® Low Temperature FKMs may be handled by traditional 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.

Typical Properties

Low Temperature Bisphenol Curable

T 636T 636/LL 636FOR TF 636FOR 5361
Flourine Content (weight %)65.565.56665.565.5
Specific Gravity (g/cm3)
ASTM D792
1.811.811.831.811.81
Rubber Mooney Visc. ML(1+10) @ 121°C (Units)
ASTM D1646
3422353121
Tensile Strength (MPa)
ASTM D412C
18.517.517.318.417.8
Elongation at Break (%)
ASTM D412C
187187187165175
Hardness (Shore A)
ASTM 2240
7473737674
C.Set 70h @200°C on #214 O-Ring (%)
ASTM D395
Method B
1315161317
TR10 (°C)
ASTM D1329
-19-19-21-19-19
Post Cure(8+16)h @ 250°C(8+16)h @ 250°C(8+16)h @ 250°C(8+16)h @ 250°C(8+16)h @ 250°C
Notes1)1)

1) Cure incorporated

Low Temperature Peroxide Curable

PL 458PL 958PL 557PL 455PL 855
Flourine Content (weight %)666665.56464
Specific Gravity (g/cm3) ASTM D7921.831.831.811.781.78
Rubber Mooney Visc. ML(1+10) @ 121°C (Units)
ASTM D1646
2953351954
Tensile Strength (MPa)
ASTM D412C
20.820.419.521.320.8
Elongation at Break (%)
ASTM D412C
182192210227248
Hardness (Shore A)
ASTM 2240
7372717069
C.Set 70h @200°C on #214 O-Ring (%)
ASTM D395
Method B
1818212323
TR10 (°C)
ASTM D1329
-24-24-29-30-30
Post Cure4h @ 230°C4h @ 230°C4h @ 230°C4h @ 230°C4h @ 230°C
Notes2)2)2)2)2)

1) Cure incorporated
2) Low post-cure

Peroxide-Curable Extreme Low-Temperature

Compound recipe: 1P

PropertyUnitVPL 45730VPL 85730VPL 45535VPL 55540VPL 85540VPL 75545Test Method
Flourine ContentWeight %676765656565
Specific Gravityg/cm31.871.871.851.831.831.83ASTM D792
Mooney viscosity
(1+10) at 121°C
MU254525254532ASTM D1646
Tensile StrengthMPa19.318.814.615.015.814.0ASTM D412C
Elongation at Break%176187166172174200ASTM D412C
HardnessShore A747268686762ASTM 2240
Compression set,
70h at 200°C on
#214 O-ring
%192220212022ASTM D395
Method B
TR10°C-30-30-35-40-40-45ASTM D1329