High Mooney Fluoroelastomer

Flurine® 26120 and 26140 are high Mooney Fluoroelastomer, which is comprised of vinylidene fluoride (VF₂) and hexafluoropropylene (HFP), frequently used in many industries including automotive, fluid power, appliance and chemical industries. It has excellent mechanical strength, good demoulding properties and low compression set. It is resistant to oils, fuels, aliphatic series, aromatic hydrocarbons, lubricants, and most mineral acids.

General

Features

High Mooney viscosity

Uses

Gaskets, oil seals, diaphragm, sheets

Forms

White or light-yellow flake

Items

Typical Value

Test Method

26120

26140

Physical Properties

Fluorine Content（mass%）

66

66

Density（g/cc）

1.80~1.82

1.80~1.82

ASTM D297

Mooney Viscosity

110~129

130~160

ASTM D1646 ML 1+10 at 121°C

Water content

0.06

0.06

ASTM D 5668

Solubility

Soluble in lower ketones and esters

Vulcanization Properties

T10（s）

<80

<70

ASTM D5289

T90（s）

<150

<140

ASTM D5289

Mechanical Properties

Tensile strength（MPa）

14.0

14.5

ASTM D412 Method A

100% Modulus

5.8

6.2

ASTM D412 Method A

Elongation at Break（%）

170

160

ASTM D412 Method A

Tearing Strength（KN/m）

21

22

ASTM D624

Hardness, Shore A

78

78

ASTM D2240, Type A

Compression Set

17

16

ASTM D395, Test B 70 hours at 200℃

Air-oven aging

ISO 188 After Dry Heat Aging;70 hours at 230℃

Tensile strength change rate（%）

+4

+2

ASTM D412 Method A

Elongation at Break change rate（%）

-3

-3

ASTM D412 Method A

Hardness change, Shore A

0

+1

ASTM D2240, Type A 

Thermal Properties

Glass Transition Temp, Tg（℃）

-20

-20

ASTM D1329

Brittleness Temperature（℃）

-30

-30

ASTM D2137

Chemical resistance Properties

Resistance to liquids

3 # standard oil

Volume change rate（%）

+1

+1

ASTM D471 72 hours at 150℃

Mass change rate（%）

+1

+1

ASTM D471 72 hours at 150℃

Formulation

Curing condition

Polymer            100      MT carbon black，N990   30

Calcium hydroxide    6        Magnesium oxide         3

Fluorocure-5#        2.5

Press

Oven

6min at 177°C

24h at 230°C