ELTAS™ Perfluoroelastomer

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FFKM delivering highly reliable sealing performance even under harsh conditions

Product Description

Our ELTAS perfluoroelastomer offers excellent heat, chemical, and steam resistance. Its ability to maintain good sealing properties even in harsh environments makes it a promising choice for various industries and applications.

Features

Offers excellent heat resistance, capable of maintaining rubber elasticity even in high temperature environments above 300°C.
Shows high resistance to a wide range of chemicals, including acids, alkalis, amines, and oils, as well as to high-temperature steam.
Less likely to experience weight loss or cracking caused by plasma exposure due to its outstanding plasma resistance.

Characteristics

Perfluoroelastomers are chemically stable due to their unique main chain structure composed entirely of strong carbon-fluorine bonds. They exhibit the highest heat, chemical, steam, and plasma resistance among elastomers. This exceptional performance has led to their growing use as solutions for demanding specifications in sectors like the semiconductor, aerospace, oil and gas industries, as well as in chemical plant.

*IRM 903: Immersion test oil for vulcanized rubber and thermoplastic rubber specified in JIS K 6258".

The table below lists our flagship ELTAS high-temperature perfluoroelastomer (HT-FFKM) grades, which maintain exceptional performance even in extreme high-temperature environments.

Product Name	Product State	Hardness*	Maximum Service	Peak Temperature	Key Featrure	Recommended Application
ELTAS HPE800	Full-compound	77	300℃	320℃ <	Carbon-black blended high hardness type	Heat resistant seals for aerospace, seals for oil drilling equipment
ELTAS HPE900	Full-compound	65	280℃	320℃ <	Non-filler	Seals for semiconductor manufacturing equipment
ELTAS HPE905	Full-compound	59	310℃	320℃ <	Non-filler	Seals for semiconductor manufacturing equipment

*ISO7619-1

Product List

* The data presented are representative values measured by our testing methods and are not guaranteed.
The data may change without notice.

Base Polymer / Pre-Compound

Product Name		Product State		Mooney Viscosity ML1+10(121℃)		Product Type
ELTAS HPE103		Base polymer		40		Standard peroxide cured FFKM
ELTAS HPE203		Pre-compound		40		High temperature peroxide cured FFKM with curing agents

Full Compound

Product Type	Peroxide Cured FFKM		Special Cured HT-FFKM
Product Name	ELTAS HPE505	ELTAS HPE605	ELTAS HPE800	ELTAS HPE900	ELTAS HPE905
Maximum Service Tempareture	250℃	250℃	300℃	280℃	310℃
Peak Temperature	280℃	280℃	320℃ <	320℃ <	320℃ <
Hardness*(ShoreA,3S)	88	78	77	65	59
Tensile Strength*	23.9 MPa	23.2 MPa	22.0 MPa	15.6 MPa	18.8 MPa
Elongation at Break*	140%	160%	150%	250%	240%
Compression Set**@200℃/70h	22%	23%	-	-	-
Compression Set**@300℃/70h	-	-	24%	38%	19%
TR10***	-5℃	-2℃	1℃	-1℃	-1℃
Key Featrure	Carbon-black blended high hardness type	Carbon-black blended chemicals resistant type*	Carbon-black blended high hardness type	Non-filler	Non-filler

*ISO7619-1, ISO37 Type1

**ASTM D1414/D395, P-24 O-ring

***ISO2921

Chemical Resistance Chart

Chemical Name	Product Name
Chemical Name	ELTAS HPE505	ELTAS HPE605	ELTAS HPE800	ELTAS HPE900	ELTAS HPE905
Steam (200℃ × 200h)	A	A	A	A	A
33% Acetic acid (100℃ × 200h)	E	A	A	A	A
Glacial acetic acid (100℃ × 200h)	E	B	C	C	C
98% H₂SO₄ (80℃ × 70h)	A	A	A	A	A
65% HNO₃ (80℃ × 168h)	C	A	B	B	B
HCl (80℃ × 200h)	A	A	B	B	B
25% NH₃aq (80℃ × 200h)	A	A	B	B	B
50% NaOH (80℃ × 72h)	A	A	B	B	B
50% KOH (125℃ × 168h)	A	A	E	E	E
Hexamethylene diamine (80℃ × 200h)	A	A	B	B	B
Methanol (80℃ × 200h)	A	A	B	B	B
Methyl ethyl ketone (80℃ × 200h)	C	C	D	D	D

* The evaluation criteria for chemical resistance are as follows.

	ΔV	ΔHs
A	< ±5	< ±3
B	< ±10	< ±6
C	< ±15	< ±9
D	< ±20	< ±12
E	±20 <	±12 <

Industry-Specific Solutions

Our ELTAS perfluoroelastomer offers excellent heat, chemical, and steam resistance, making it suitable for use in demanding environments within semiconductor manufacturing equipment, as well as the aerospace, oil & gas, and chemical industries.