Fluoropolymer NMR Tube Caps • 5mm • 50 Pack SKU TC-5-PTFE-50PK $257.63 This item is IN STOCK Quantity -+ Add to Cart Details Redesigned Fluoropolymer NMR Tube Caps 5 mm50 PackWhiteRedesigned tapered fluoropolymer closure system that works together with our fire-polished tube... Details Back DetailsRedesigned Fluoropolymer NMR Tube Caps5 mm50 PackWhiteRedesigned tapered fluoropolymer closure system that works together with our fire-polished tube ends, offering superior sealing and sample integrity, preventing sample loss even during temperature gradients.