The shellac has a release temperature of 140 F. Shellac is used to fix the ink sac to the section, also to fix a loose section into the barrel. Also used as a thread sealant Tintenblasen Vintage Vintage Füllfederhalter Von Montblanc Füllfederhalter Reparieren Ink/ Lead Colour: Black, Vintage: No, Ursprungsland: Großbritannien These traditional latex ink sacs are for repairing and restoring most vintage Lever Filling and Button Filling fountain Pens. They are made from a mould dipped in liquid latex several times Weitere Einzelheiten im Angebot des Verkäufers., Sub-Type: Fountain Pens, Type: Pens, Material: Latex