Writes on all plastics, glass, metal, wood, paper and cloth, including Teflon® fluoropolymer resins. Precision seal valve provides smooth ink flow and preserves the pen’s life, even if left uncapped When dry, the solvent based ink is temperature resistant from 0°C to 155ºC (32ºF to 310ºF) Markings are insoluble in water or hydrocarbons Resists many solvents, but is easily removed with alcohol or acetone TEFLON® is a registered trademark of The Chemours Company FC LLC and used under license by Bel-Art...