... Dupont, Specification: 0.5~30mm, Product name: PTFE extruded tubeMaterial: pure PTFE from Daikin or DupontSpecification: 0.5~30mmColour: white, ... The specification and permissible tolerance of PTFE (Teflon) Tubes'SFG-1:ID≤4mm,SFG-2≥4mm ItemID(inner diameter)(mm) ... .8±0.080.2±0.050.30.4±0.082, 2.2, 2.4, 2.5, 2.6, 2.8, 3.0, 3.2, 3.4, ... 3.5, 3.6, 3.8, 4.0±0.100.2 ...