12/31/2020 . 1072. Expanded PTFE sheets between 1.6mm and 3mm thick for sealants Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.11.88 Expanded poly(tetrafluoroethylene) (PTFE) nonadhesive cellular sheets, of a thickness greater than 1.5 mm but not more than 3.0 mm, certified by the importer as having a tensile strength of at least 48.3 MPa (7,000 psi) per ASTM F-152 (CAS No. 9002–84–0) (provided for in subheading 3921.19.00) Free No change No change On or before 12/31/2020 . 1073. Expanded PTFE sheets between 3.1mm and 6.00mm thick for sealants Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.11.89 Expanded poly(tetrafluoroethylene) (PTFE) nonadhesive cellular sheets, of a thickness greater than 3.0 mm but not more than 6.0 mm, certified by the importer as having a tensile strength of at least 48.3 MPa (7,000 psi) per ASTM F-152 (CAS No. 9002–84–0) (provided for in subheading 3921.19.00) Free No change No change On or before 12/31/2020 . 1074. Thermoplastic containers Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.11.90 Injection molded thermoplastic dental restorative product containers, designed for use in a dispensing system, each container with capacity not over 50 ml (provided for in subheading 3923.30.00) Free No change No change On or before 12/31/2020 . 1075. PE plug cap with holding top and inserting bottom Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.11.91 Plug-type closures of polyethylene, suitable for use in capping specimen tubes and measuring 15 mm in length