DAI-EL LT-252

Identification & Functionality

Chemical Family

Fluoropolymers

Polymer Name

Fluoroelastomer (FKM)

Technologies

Elastomers

Product Families

Elastomers — Parts & Shapes

Features & Benefits

Materials Features

Acid Resistant,

Good Mechanical Properties,

Low Temperature Flexibility,

Odorless,

Solvent Resistant

Product Highlights

• DAI-EL LT-252 is a terpolymer of vinylidene fluoride, tetrafluoroethylene and perfluoromethylvinylether which is suitable for compression molding and transfer molding.
• It provides excellent cold temperature flexibility, resistance to acid and solvents and mechanical properties.

Applications & Uses

Markets

Automotive & Transportation,

Industrial

Applications

Automotive & Transportation — Automotive

Powertrain & UTH

Industrial — Chemical & Industrial Manufacturing

Equipment & Parts

Cure Method

Chemical Cure

Plastics & Elastomers End Uses

Fuel Entrance Cover Seal,

Fuel Hose,

O Rings

Plastics & Elastomers Processing Methods

Compression Molding,

Transfer Molding

Properties

Color

White

Physical Form

Sheets

Soluble in

Lower ketones and esters

Physical Properties

	Value	Units	Test Method / Conditions
Fluorine Content	66.5	mass%	—
Mooney Viscosity (ML₁₊₁₀) (at 100°C)	40	MU	ASTM D1646
Mooney Viscosity (ML₁₊₁₀)(at 121°C)	30	MU	ASTM D1646
Specific Gravity (at 23°C)	1.86	—	ASTM D792

Physical Properties of Vulcanizate

	Value	Units	Test Method / Conditions
100% Tensile Stress*²	2.6	MPa	ASTM D412
Compression Set (70hours at 200°C, 25% Compression*³)*²	29	%	—
Elongation (at break)*²	260	%	ASTM D412
Hardness (at 3 sec)*²	60	Shore A	ASTM D2240
Hardness (at Peak)*²	63	Shore A	ASTM D2240
Low Temperature Retraction (TR10)*²	-25	°C	ASTM D1329
Tensile Strength*²	17.4	MPa	ASTM D412

Note

• *¹ The above values are representative and not guaranteed.
• *² [Formula] DAI-EL LT-252: 100 phr, MT carbon black (N990): 20 phr, Triallyl isocyanurate: 4 phr, 2,5-Dimethyl-2,5-di(tertbutylperoxy)hexane: 1.5 phr, [Curing condition] Press cure: 10min at 160°C, Post cure: 4hrs at 180°C.
• *³ P-24 O-ring.

Safety & Health

Handling Method / Safety Information

• Be sure to read the Safety Data Sheet (SDS) and precautions on the label before using.
• This product has been developed for industrial purposes and we shall not guarantee the safety if used for any other purposes. If it is going to be used for medical or food applications, please contact us in advance

Packaging & Availability

Packing Specification

20 Kg