AED seals and O-rings (Anti-Explosive Decompression) are typically used in high pressure applications encountered in the Oil and Gas industry.
Explosive Decompression (also known as Rapid Gas Decompression or RGD) is a failure mechanism of elastomer seals and O-rings which is caused by a rapid reduction in pressure of a gaseous media. Gas that has permeated into the elastomer seal expands violently when the pressure is released, which in turn rapidly causes fissuring and seal failure.
International standards for testing elastomers in explosive decompression conditions include the following:-
• NORSOK M-710 Rev.2 Section 7.3 Annex B: “Qualification of non-metallic sealing materials and manufacturers – resistance to rapid gas decompression (RGD)”.
• TOTAL General Specification GS PVV 142, Appendix 8 “Elastomer O-ring seals explosion decompression type testing procedure”.
• NACE TM0297 “Effects of high temperature, high pressure carbon dioxide decompression on elastomeric materials”.
• ISO 23936-2 “Petroleum, petrochemical and natural gas industries: Non-metallic materials in contact with media related to oil and gas production – Part 2: Elastomers”.
GL-Provent S.L. supply wide range of approved AED seals and AED O-rings. Our products have been qualified against the strict NORSOK M-710 rapid gas decompression (RGD) and the effects of sour gas (H2S) aging on polymer materials.
GL-Provent provide a range of formulations within the HNBR, Viton B, Viton GLT and FFKM materials that have passed the strict NORSOK M-710 requirements. These compounds are listed in the table below.
Please contact us to find out more information on AED seals or to place your order. Download our NORSOK M-710 approved compounds information sheet: