The invention discloses a 
diesel engine oil 
pipe seal 
gasket with high 
thermal stability. The 
diesel engine oil 
pipe seal 
gasket comprises the following raw materials in parts by weight: 90 to 100 parts of a main material, 4 to 15 parts of a kaolin compound, 8 to 12 parts of 
coal gangue, 4 to 10 parts of 
glass fiber, 1 to 2 parts of a cross-linking agent, 1 to 2 parts of 
tricresyl phosphate, 1 to2 parts of epoxidized 
fatty acid methyl ester, 0.2 to 0.8 part of chlorinated paraffin, 0.4 o 1.2 parts of disproportionated 
rosin, 1 to 2 parts of an anti-aging agent SP and 1 to 2 parts of an anti-aging agent AW, wherein the kaolin compound is prepared by adopting the following process: mixing kaolin, 
sepiolite powder, 
bentonite, tetrabutyl 
titanate and water under stirring, adding 
cocamidopropyl betaine and 
sodium hydroxide, carrying out uniform mixing, subjecting an obtained mixture to ball milling, filtering, washing and 
drying so as to obtain the kaolin compound. The 
diesel engine oil 
pipe seal 
gasket provided by the invention has the advantages of excellent 
thermal stability, good 
impact-resistant effect, good mechanical properties and excellent seal effect, can effectively preventoil impregnation, greatly improves the work reliability of a diesel engine oil pipe, and facilitates application and popularization.