The article is devoted to the choice of material for sealing element gate assembly valves. Two new composite materials have been proposed as a Where following are selected matrix: butadiene-nitrile rubber brand SKN-26 and fluoroplast FT4. It shown that both can be used manufacture elements high-pressure At same time, samples from composition with matrix show best resistance chemical influences....

The leakage prediction calculation method for dynamic seal rings in underground equipment is presented this paper. framework of the given. model built. non-Newtonian fluid interface element brought in. was developed based on thermal–structural coupled and fluid–structural method. A test performed to validate proposed It proved that film thickness an O-ring made nitrile rubber pulling-in travel ...