US 11,725,732 B2
Seal between mutually fixed surfaces
Aleksey Yur'evich Lepeshkin, g. Dimitrovgrad (RU); Andrei Valer'evich Sokolov, g. Dimitrovgrad (RU); and Andrei Viktorovich Vildeev, g. Dimitrovgrad (RU)
Assigned to NFC LOGISTICS, JOINT-STOCK COMPANY (NFCL JSC), Moscow (RU); and SCIENCE AND INNOVATIONS -NUCLEAR INDUSTRY SCIENTIFIC DEVELOPMENT, PRIVATE ENTERPRISE, Moscow (RU)
Appl. No. 17/256,581
Filed by NFS LOGISTICS, JOINT-STOCK COMPANY (NFCL JSC), Moscow (RU); and SCIENCE AND INNOVATIONS -NUCLEAR INDUSTRY SCIENTIFIC DEVELOPMENT, PRIVATE ENTERPRISE, Moscow (RU)
PCT Filed Dec. 29, 2018, PCT No. PCT/RU2018/000910
§ 371(c)(1), (2) Date Dec. 28, 2020,
PCT Pub. No. WO2020/139122, PCT Pub. Date Jul. 2, 2020.
Claims priority of application No. 2018147148 (RU), filed on Dec. 28, 2018.
Prior Publication US 2021/0372524 A1, Dec. 2, 2021
Int. Cl. F16J 15/08 (2006.01)
CPC F16J 15/0818 (2013.01) [F16J 2015/0856 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A seal assembly comprising a metal ring having or more holes, a first recess, and a second recess, wherein: the one or more holes extend from a first surface of the metal ring to a second surface of the metal ring, the first recess is located in the first surface and the second recess is located in the second surface, the first and second recesses are in communication with the one or more holes, the first and second recesses are concentric to the metal ring, and the first and second surfaces comprise a jagged portion; a first graphite layer and a second graphite layer, wherein the first graphite layer coats at least the jagged portion of the first surface of the metal ring, and wherein the second graphite layer coats at least the jagged portion of the second surface of the metal ring, whereby the metal ring and the first and second graphite layers form a unitary structure; a lid for a container, said lid comprising a lower surface, an upper surface, and one or more grooves, wherein the one or more grooves are formed in the lower surface of the lid;
and one or more screws securing the lid to the metal ring, wherein the one or more screws are inserted through the one or more holes and into the one or more grooves in the lower surface of the lid; wherein the first and second recesses divide the seal into two sections, thereby creating two circuits which increase a tightness of the seal, and wherein the first and second recesses prevent radial extrusion outside of the metal ring over and entire operating pressure range.