; and (B) by striking 12/31/2020 and inserting 12/31/2025 . (202) IPDI based aliphatic polyisocyanate Heading 9902.11.50 is amended— (A) by amending the article description to read as follows: N,N′,N″-[(2,4,6-Trioxo-1,3,5-triazine-1,3,5(2H,4H,6H)-triyl) tris [methylene(3,5,5-trimethyl-3,1-cyclohexanediyl)]] tris [hexahydro-2-oxo-1H-azepine-1-carboxamide] (CAS No. 68975–83–7) in organic solvent (provided for in subheading 3911.90.90) ; and (B) by striking 12/31/2020 and inserting 12/31/2025 . (203) HDI based aliphatic polyisocyanate Heading 9902.11.51 is amended— (A) by amending the article description to read as follows: 3,5-Dimethyl-1H-pyrazole-oligo(hexamethylene diisocyanate) in solvents (CAS No. 163206–31–3) (provided for in subheading 3911.90.90) ; and (B) by striking 12/31/2020 and inserting 12/31/2025 . (204) Strips of 100% ePTFE sealant 3 mm<30 mm Heading 9902.11.79 is amended— (A) by amending the article description to read as follows: Strips wholly of expanded poly(tetrafluoroethylene) (PTFE) (CAS No. 9002–84–0), noncellular, with adhesive backing, of a thickness greater than 3 mm but not over 30 mm, presented rolled in spools, certified by the importer as having a tensile strength of 24.1 MPa or higher per ASTM F-152 (provided for in subheading 3916.90.50) ; and (B) by striking 12/31/2020 and inserting 12/31/2025 . (205) e -PTFE sheets 1.6 mm ≤ 3.00 mm for sealants Heading 9902.11.88 is amended— (A) by amending the article description to read as follows: Expanded poly(tetrafluoroethylene) (PTFE) nonadhesive cellular sheets, of a thickness greater than 1.5 mm but not more than 3 mm, certified by the importer as having a tensile strength of at least 48.3 MPa per ASTM F-152 (CAS No. 9002–84–0) (provided for in subheading 3921.19.00)