FIELD: oil and gas industry.
SUBSTANCE: invention relates to technique of pumping liquefied gases from containers and then compressing them and can be used in installations for filling cylinders with gas, medical equipment, oil industry, fire extinguishing systems. Cryogenic pump uses a seal having a substantially L-shaped shape, inner and outer surfaces of the sealing lip being parallel to each other, and at the end there is a chamfer and a flat surface. Ring that presses the seal against the rod has a rectangular shape with a bevel in the cross section. Ring contains a notch on the periphery in which a square seal is placed.
EFFECT: reduce the cost of maintenance of the pump, increase the resource.
5 cl, 2 dwg
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