Effect of fuels, aromatics and preparation methods on seal swell

Abstract New alternative jet fuels have provided many advantages in the aviation industry, especially terms of economics and environment. However, fuel–seal compatibility is one major issues that restricts fuel advancement into market. Thus, to help understand solve problem, this study examines swelling effect prepared non-prepared O-rings different aromatic species. Stress relaxation experiments were carried out evaluate seal under compression, which mimics engine operation conditions. Seals compressed immersed a variety their blends for about 90h while maintaining constant temperature 30°C compression force 25% thickness. The two types elastomers investigated fluorosilicone nitrile O-rings, are predominantly used industry. Meanwhile, three species utilised as variables experiments. Jet-A1, SPK SHJFCS, added propyl benzene, tetralin p -xylene. effects determined from P/P o value. Results indicate Jet-A1 has highest effect, followed by SHJFCS SPK. It was observed higher percentage aromatics fuel, rate swelling. Furthermore, seals had lower than did seals. intensity Jet-A1-SHJFCS order 60/40, 85/15 50/50 blend. work done will aid selection suitable future fuels. novelty research lies determination appropriate amount content well type its mixture fuel. Moreover, various proportions with investigated. primary aim behaviour seals,