Metric O-Ring Size and Standard Sizes
Perfrez® 9021C Perfluoroelastomer (FFKM)
Enhanced for Chemical and Hydrocarbon Processing Industries
a high performance grade of perfluoroelastomer (FFKM) compound
that is specially formulated for use under the most severe
thermal and chemical environments found in many chemical and
hydrocarbon processes. While most other elastomers deteriorate
rapidly under harsh operating conditions, Perfrez® 9021C
continues to perform to expectations.
Characterised by its low compression set, Perfrez® 9021C is a
black compound which exhibits extraordinary stability over
extended service conditions in exceptionally hostile
environments. 9021C offers outstanding chemical and thermal
resistance with enhanced mechanical properties, and is suited
for use in the most demanding environments where seals are
exposed to chemical attack and elevated temperature.
Resistance to Special Environments
Where hydrofluorocarbon elastomers fail to deliver expected
service life under severe operating conditions,
perfluoroelastomers (FFKM) is the product of choice.
Perfluoroelastomers can withstand corrosive oxidising agents and
acids, and resist the degrading effects of organic and inorganic
bases. Perfrez® 9021C delivers all of the exceptional properties
of perfluoroelastomers, along with excellent thermal stability
for prolonged service life at continuous service temperature of
Properties of Perfrez 9021C
Elastomer sealing components when exposed to high temperature,
corrosive fluid and gases during chemical processes undergo
degradation resulting in weight loss. Sealing components that
form a part of the equipment used in the production of chemicals
and hydrocarbons must meet the exceptionally stringent
performance requirements of low weight lost, low compression set
and low volume swell when exposed to severe operating
is fabricated from perfluoroelastomers which are fully
fluorinated elastomers whereby hydrogen atoms are replaced by
fluorine atoms, resulting in an highly stable compound due to
the strong bond between carbon and fluorine. The exceptional
properties of Perfrez® 9021C is further enhanced by using
compounding additives, resulting in end-products that last for
longer durations when exposed to demanding service conditions.
Perfrez® 9021C exhibits lower weight loss and less degradation
than similar perfluoroelastomers compounds that have not
undergone such properties enhancements.
Gmors® Rubber, we select only the highest quality
compounding additives and fillers such as accelerators,
curatives, coupling agents, fire retardants and more, to arrive
at your final product.
extend to which a material is able to retain its form,
dimensions and elasticity upon the release of a sustained force
is known as compression set resistance. Temperature will affect
a material's compression set resistance as a higher temperature
corresponds to an increase in material aging. Perfrez® 9021C
offers lower compression set resistance than other competing
products based on comparative temperature ratings.
Volume swell is an indicator of an elastomer's fluid
compatibility. Elastomer seals, o-rings and gaskets are
susceptible to swelling and degradation as a result of the
absorption of gas or fluid. Swelling increases friction and
reduces abrasion resistance and toughness, and also results in
contamination and the reduction of service life. Perfrez®
9021C has exceptional low volume swell, as determined by
chemical compatibility tests.
Thermal and Chemical Resistance
satisfies all the requirements of sealing components under the
most extreme and challenging thermal and chemical environments.
seals deliver all of the high performance properties of
perfluoroelastomers and is widely used by manufacturers of
equipment over an extensive range of industries.
2. Aeronautical / aerospace
4. Semiconductor fabrication
5. Oil and gas extraction and processing
6. Power generation
7. Hydrocarbon processing
8. Pharmaceutical and food industry
sealing components offer our customers advantages by
combining product performance with dedicated service and
1. Product reliability means lower
operating cost and extended intervals between maintenance.
2. Longer service life resulting in productivity increase and
3. Increase in operational safety and reliability
4. Product standardisation resulting in inventory reduction
Ge Mao Rubber
Industrial Co., Ltd.
No. 15, Kung Yeh East 4th Rd., Lukang, Chang Hua 505, Taiwan, R.O.C.