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GT EXPANDS EXPLOSIVE DECOMPRESSION RESISTANT LINE WITH 936 FLUOROCARBON
21 April 2005 - Greene Tweed & Co Benelux BV
| Greene, Tweed has developed a new explosive decompression (ED) resistant fluorocarbon elastomer with compression set less than half that of competitive materials and low-temperature continuous-use performance 45ºF lower than any other ED resistant fluorocarbon material. |
In addition to improved physical properties, this high-performance elastomer, FKM 936, offers broader chemical compatibility while maintaining its properties in downhole environments such as sour gas and methanol. FKM 936 increases the reliability of equipment by preventing failures due to unexpected pressure drops. Greene, Tweed developed FKM 936 based on customer requests, thus extending its line of ED resistant grades. Other products in the line include Fluoraz® 799, a TFE/P elastomer (Tetrafluoroethelyne Propelyne Copolymer), compound 926, a fluorocarbon elastomer and Chemraz® 526, a perfluoroelastomer. Ron Campbell, Greene, Tweed's chief polymer scientist, notes, "FKM 936 provides a much needed combination of ED resistance with outstanding chemical and physical properties, especially compression set, to enable customers to expand their operating capability and improve the reliability of their exploration and production equipment." Explosive decompression often occurs when high-pressure gas molecules migrate into an elastomer at a compressed state. When the pressure surrounding the elastomer is released suddenly, the compressed gas inside the elastomer tries to expand and exit the elastomer. This gas expansion can cause seal damage, such as tears, blisters and cracks in materials not suited for these conditions. Greene, Tweed's FKM 936 provides superior ED resistant properties delivering significant benefits to users in the oil exploration and production industry. ED resistant FKM 936 improves the reliability of surface, downhole and subsea equipment. Greene, Tweed's FKM 936 is available as O-rings, GT rings and VEE-rings and in other custom-molded shapes. ED test results are available for several various test conditions, including NACE and Shell specifications.
http://www.gtweed.com
About: Greene Tweed & Co Benelux BV
Greene, Tweed specialises in the development, manufacture and supply of rings, seals and profiles for industrial applications in which extremely high specifications are set for the material; brand names include Chemraz, WR and AR. An early product in the portfolio, the G-T Ring, was introduced and approved for use in the landing gear of the F-4 Phantom in 1964. The G-T Ring remains a core product in Aerospace landing gear today. As the business developed, strategy warranted the establishment of corporate headquarters in Kulpsville, Pa., USA. in the 1970s. With this foothold, the company expanded around the globe. In the early 1980s it introduced several versatile elastomers, such as Fluoraz, and designed pioneering product geometries, such as the first "capped seal." Arlon, a tough, high-temperature, semi-crystalline engineering polymer, also joined the product line, followed shortly by one of Greene, Tweed's most innovative products, Chemraz, a chemical-resistant elastomer, effective in the most extreme temperatures. Recognizing the race toward a global economy, Greene, Tweed began geographic expansion by opening offices in Germany, England and France. By the mid 1980s, Greene, Tweed had established a presence in the Pacific with a Japanese office. The Asian market has maintained its pattern of growth with additional offices today in Singapore and Korea. The turn of the century ushered in a new product, Orthtek, a lightweight, thermoplastic composite with high-strength and radiolucent properties, that satisfies the demands of the Medical and Biotechnology industry. Worldwide expansion has continued with new offices in the Netherlands, Italy and Spain. A tradition of creative and innovative ideas has also grown with the development of new products, from new composite technologies and vision systems to fibre optic connectors and extreme electrical connectors. Greene Tweed’s WR and AR product ranges are distributed by Flowserve all over Europe. In Belgium the Greene Tweed & Co products are also distributed by Humitab BVBA in St.Job in ‘t Goor.
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