US 11,808,357 B2
Seal including coating and method of forming
Zong Zong, Southborough, MA (US); Jiezhu Jin, Westborough, MA (US); and Nafih Mekhilef, Shrewsbury, MA (US)
Assigned to SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION, Solon, OH (US)
Filed by SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION, Solon, OH (US)
Filed on Dec. 31, 2019, as Appl. No. 16/731,248.
Claims priority of provisional application 62/786,863, filed on Dec. 31, 2018.
Prior Publication US 2020/0208744 A1, Jul. 2, 2020
Int. Cl. F16J 15/3284 (2016.01); F16J 15/3272 (2016.01)
CPC F16J 15/3284 (2013.01) [F16J 15/3272 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A seal, comprising a seal body in a shape of a ring and a coating disposed on at least a portion of the seal body, wherein:
the seal body comprises:
a high-performance thermoplastic material and optionally a filler material, wherein the high-performance thermoplastic material comprises polyarylketone, polyimide, aliphatic and aromatic polyamide (PA or PPA), polyester, polyetherimide (PEI), polyamideimide (PAI) liquid crystal polymer (LCP), polybenzimidazole (PBI), ultra high molecular weight polyethylene (UHMWPE), polysulfones (PPS, PES, PPSU, or PESU), polytetrafluoroethylene perfluoroether (PFA), polycholoro-trifluoroethylene (PCTFE), polyethylenetetrafluoroethylene (ETFE, polyvinlyledene fluoride (PVDF) Polyvinylfluoride (PVF), polyvinyledene fluoride-hexafluoropropylene (VF2-HFP), polyketone (PK), polyetherketone (PEK), polyetheretherketone (PEEK), polyetherketoneketone (PEKK), polyetheretherketoneketone (PEEKK), polyetherketoneetherketoneketone (PEKEKK), or any combination thereof; and
the coating comprises a fluoropolymer, wherein the coating has a thickness of at most 20 microns, wherein the coating defines:
at least a portion of an outermost surface that defines an outer diameter of the seal;
at least a portion of an innermost surface that defines an inner diameter of the seal; or
both.