Metric O-Ring Size and Standard Sizes
Gas Decompression (aka
In many high pressure gas processes in the oil and
gas industry, damage to elastomeric sealing components as a result
of rapid gas decompression, also known as explosive decompression,
is a common occurrence. These damages can be costly in terms of
safety, financial and environmental implications. Explosive
decompression is a common phenomena which happens when gases or
liquefied gases under high pressure is abruptly released, resulting
in a rapid expansion of absorbed gas within the elastomeric
compound, thus damaging the seal. However, damage to seals can also
occur even as decompression takes place over many hours. Hence, the
prefix "explosive" can be misleading.
9021A Perfluoroelastomer (FFKM) Enhanced for Rapid Gas Decompression
is a NORSOK M-710 certified ED resistant perfluoroelastomer (FFKM)
compound that offers superior chemical compatibility and high
temperature performance, coupled with exceptional resistance to
rapid gas decompression (RGD). Explosive decompression (ED) is a
potential cause of seal failure, and Perfrez 9021A is the ideal
solution for sealing applications for down-hole and surface
equipment in oilfield operations, and for gas compressors, gas
re-injection equipment and other equipment manufacturers who must
factor in the effects of high pressure gases on seal and joint
Perfrez 9021A is a high performing perfluoroelastomer compound which meets the requirements of high
modulus and hardness, and along with its excellent chemical, thermal
and RGD resistance properties, is the preferred choice for sealing
applications under the most harsh environments.
Perfrez 9021A is a NORSOK M-710 certified compound
meeting the requirements of elastomeric sealing under conditions of
rapid gas decompression (refer to test certificate below).
However, the performance of individual seals for specific
applications under conditions of RGD is highly complex, and design
parameters such as seal and housing design, along with seal material
are all variables which will determine seal integrity. For example,
extreme temperatures, volume swell, chemical attack and extrusion
can all have an adverse effect on the strength of elastomers.
While most elastomers give way to cracks and blisters
when absorbed gases within the elastomeric seals force its way out
under decompression, Perfrez® 9021A continues to perform to
expectations because of its superior RGD properties and broad
Perfrez 9021A is available as o-rings, gaskets and
Superior RGD resistance with a reduction of equipment
Combined RGD properties with the widest range of
resistance to chemical attack.
Hardness reduces the instance of material extrusion.
Maintenance cost reduction
Enhance the safety aspect of equipment operation.
Ge Mao Rubber Industrial Co., Ltd.
No. 15, Kung Yeh East 4th Rd., Lukang, Chang Hua 505, Taiwan, R.O.C.