# US 12,000,486 B2 · Seal and method of making and using the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,000,486 B2 - Document ID: US12000486B2 - Status: Granted - Kind: B2 - Application number: 17/937,015 - Filed: 2022-09-30 - Published: 2023-04-06 - Granted: 2024-06-04 - Earliest claimed: 2021-10-01 - Assignees: Saint-Gobain Performance Plastics Corporation - Applicants: Saint-Gobain Performance Plastics Corporation - Inventors: Michael D. Downes; Colby Stark - Web page: https://patentgrep.com/patent/US12000486B2 ## CPC - F16J 15/3236: with at least one lip for each surface, e.g. U-cup packings - F16J 15/3208: provided with tension elements, e.g. elastic rings - F16J 15/3212: with metal springs - F16J: PISTONS {(specially adapted for dampers F16F9/32)}; CYLINDERS; SEALINGS ## Abstract A seal including: an annular jacket including a body including a first lip and a second lip defining an annular recess; a circumferential spring disposed within the annular recess adjacent to one of the first lip and the second lip; and a floating circumferential insert, where a radial biasing force on the first lip is decoupled from a radial biasing force on the second lip. ## Claims ### Claim 1 A seal comprising: an annular jacket comprising a body comprising a first lip and a second lip defining an annular recess; a circumferential spring disposed within the annular recess adjacent to one of the first lip and the second lip; and a floating circumferential insert, wherein a radial biasing force on the first lip is decoupled from a radial biasing force on the second lip, wherein the annular jacket further comprises a second circumferential insert disposed within the annular recess adjacent to the other of the first lip and the second lip, wherein the annular recess comprises a void between the floating circumferential insert and the second circumferential insert. ### Claim 2 A seal assembly comprising: a first member; a second member; and a seal disposed radially between the first member and the second member, the seal comprising: an annular jacket comprising a body comprising a first lip and a second lip defining an annular recess; a circumferential spring disposed within the annular recess adjacent to one of the first lip and the second lip; and a floating circumferential insert, wherein a radial biasing force on the first lip is decoupled from a radial biasing force on the second lip, wherein the annular jacket further comprises a second circumferential insert disposed within the annular recess adjacent to the other of the first lip and the second lip, wherein the annular recess comprises a void between the floating circumferential insert and the second circumferential insert. ### Claim 3 (depends on 1) The seal according to claim 1, wherein the annular jacket further comprises a second circumferential insert disposed within the annular recess adjacent to the other of the first lip and the second lip. ### Claim 4 (depends on 1) The seal according to claim 1, wherein the circumferential spring provides a radial biasing force against the first lip or the second lip of between 0.1 to 1000 N/mm. ### Claim 5 (depends on 1) The seal according to claim 1, wherein the second circumferential insert provides a radial biasing force against the first lip or the second lip of between 0.1 to 1000 N/mm. ### Claim 6 (depends on 1) The seal according to claim 1, wherein the radial biasing force against the first lip is different than the radial biasing force against the second lip. ### Claim 7 (depends on 2) The seal assembly according to claim 2, wherein the first lip is located radially exterior to the second lip. ### Claim 8 (depends on 7) The seal assembly according to claim 7, wherein the second circumferential insert is disposed directly adjacent to the second lip. ### Claim 9 (depends on 7) The seal assembly according to claim 7, wherein the second circumferential insert is disposed directly adjacent to the first lip. ### Claim 10 (depends on 1) The seal according to claim 1, wherein the second circumferential insert comprises a metal. ### Claim 11 (depends on 1) The seal according to claim 1, wherein at least one of the first lip or the second lip comprises a radially oriented flange. ### Claim 12 (depends on 11) The seal according to claim 11, wherein the second circumferential insert contacts a radial edge of the radially oriented flange of the first lip or the second lip. ### Claim 13 (depends on 1) The seal according to claim 1, wherein the second circumferential insert comprises a radially oriented flange. ### Claim 14 (depends on 1) The seal according to claim 1, wherein the second circumferential insert comprises a second circumferential spring. ### Claim 15 (depends on 1) The seal according to claim 1, wherein the floating circumferential insert contacts the circumferential spring. ### Claim 16 (depends on 1) The seal according to claim 1, wherein the floating circumferential insert comprises a seat contacting the circumferential spring. ### Claim 17 (depends on 1) The seal according to claim 1, wherein the void has a volume of no greater than 50% of the volume of the annular recess. ### Claim 18 (depends on 1) The seal according to claim 1, wherein the void has a volume of no less than 5% of the volume of the annular recess.