The utilisation time is important.

In a production process is next to the quality assurance the efficiency essential. A short utilisation time of an unsuitable O-Rings increase the maintenance rate and this causes high installation costs and production downtimes. So an O-Ring with a favourable price could be interesting at the first glance but this O-Ring might finally causes very high costs. A Perlast® O-Ring extended the maintenance rate enormously and helps to reduce the production costs. It is an optimal material for power stations, the semiconductor, pharmaceutical and chemical industry.

Following table shows a comparison of chemical resistances of fluorine-containing elastomers in various media.

Medium	Example	FFKM	FPM	TFE/P	FVMQ

aliphatic hydrocarbon	Propane	A	A	D	A
aromatic hydrocarbon	Benzene	A	A	D	B
organic acid	Acetic acid	A	B	B	C
inorganic acid	Sulfuric acid	A	A	C	C
alcohol	Methanol	A	B	B	C
inorganic bases	Sodium hydroxide	A	B	A	D
organic bases	Aniline	A	C	A	D
ether	Ether	A	C	D	C
ketone	Acetone	A	D	D	D
nitrose oxidizer	Ammonium nitrate	A	B	A	C
halogen oxidizer	Chlor	A	A	C	C
thermal fluids	Ethylenglycol	A	A	A	A
oil and fat	Mineral oil	A	A	B	B
cooling medium	R 134a	B	C	D	D
polar solvent	Water	A	A	A	A

Table 2: chemical resistance list of fluorine-containing elastomers
(Source: fluid-technik 2002)

The utilisation time is important.

Perlast® —
a top-class
perfluoroelastomer

Brochures, Stock List and O-Ring Basics

The utilisation time is important.

Perlast® — a top-class perfluoroelastomer

Brochures, Stock List and O-Ring Basics

Perlast® —
a top-class
perfluoroelastomer