FKM Precompound

General

Features

               Medium molecular weight distribution

Uses

Shaft seals, gaskets,O ring, extruded shapes, molded tubing

Forms

White or light-yellow flake

Items

Typical Value

Test Method

FLC-20

FLC-40

Physical Properties

Fluorine Content（mass%）

66

66

Density（g/cc）

1.78~1.84

1.78~1.84

ASTM D297

Mooney Viscosity

20~30

40-50

ASTM D1646 ML 1+10 at 121°C

Water content

0.15

0.15

ASTM D 5668

Solubility

Soluble in lower ketones and esters

Vulcanization Properties

T10（s）

<80

<100

ASTM D5289

T90（s）

<150

<270

ASTM D5289

Mechanical Properties

Tensile strength（MPa）

16.0

16.5

ASTM D412 Method A

100% Modulus

5.0

5.0

ASTM D412 Method A

Elongation at Break（%）

210

190

ASTM D412 Method A

Tearing Strength（KN/m）

21

21

ASTM D624

Hardness, Shore A

76

76

ASTM D2240, Type A

Compression Set

16

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（%）

-10

-10

ASTM D412 Method A

Elongation at Break change rate（%）

-8

-8

ASTM D412 Method A

Hardness change, Shore A

-1

-1

ASTM D2240, Type A