DAI-EL G-557

Identification & Functionality

Chemical Family

Fluoropolymers

Polymer Name

Fluoroelastomer (FKM)

Technologies

Elastomers

Product Families

Elastomers — Parts & Shapes

Features & Benefits

Materials Features

Excellent Fuel Resistance,

Good Processability,

Odorless

Product Benefits

• DAI EL G 557 is a bisphenol type cure incorporated terpolymer of vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene which has excellent extrusion processability.
• It offers excellent fuel resistance and is suitable for fuel hoses.

Applications & Uses

Markets

Automotive & Transportation,

Industrial

Applications

Automotive & Transportation — Automotive

Fuel Systems,

Powertrain & UTH

Industrial — Chemical & Industrial Manufacturing

Equipment & Parts

Cure Method

Chemical Cure

Plastics & Elastomers End Uses

Automotive Fuel Lines,

Fuel Hose,

O Rings

Plastics & Elastomers Processing Methods

Extrusion

Properties

Color

White

Physical Form

Sheets

Soluble in

Lower ketones and esters

Physical Properties

	Value	Units	Test Method / Conditions
Fluorine Content	69	mass%	—
Compression Set (at 200°C,70 hours, 25% Compression*⁴)	32	%	—
Elongation (at break)	450	%	ASTM D412
Hardness (at 3 sec)	61	Shore A	ASTM D2240
Hardness (at Peak)	64	Shore A	ASTM D2240
Low Temperature Retraction (TR10)	-13	°C	ASTM D1329
Mooney Viscosity (ML₁₊₁₀) (at 100°C)	43	MU	ASTM D1646
Mooney Viscosity (ML₁₊₁₀) (at 121°C)	34	MU	ASTM D1646
Specific Gravity (at 23°C)	1.87	—	ASTM D792
Tensile Strength	11.3	MPa	ASTM D412

Physical Properties of Vulcanizate

	Value	Units	Test Method / Conditions
100% Tensile Stress*²	1.6	MPa	ASTM D412

Note

• 1 The above values are representative and not guaranteed.
• *2 [Formula] DAI EL G 557: 100 phr, SRF carbon black (N774): 13 phr, Calcium hydroxide: 6 phr, Magnesium Oxide (high active): 3 phr, [Curing condition] Press cure: 45min@160°C, Post cure: 24hrs@230°C.
• *3 Compression set tested after post cure, while others tested without post cure.
• *4 P 24 O ring.

Safety & Health

Handling Method / Safety Information

• Be sure to read the notes on SDS and labels before use.
• This product is intended for general industry, and therefore its adequacy and safety as a raw material for medical purposes cannot be guaranteed.

Packaging & Availability

Packing Specification

20kg