Permatex Thread Sealant 80633; Thread Sealant with PTFE 16 oz. Brush-on, White. Permatex’s Thread Sealant with PTFE is an economical general-purpose fitting sealant. Permatex’s Thread Sealant outperforms traditional tapes and pipe dopes, it seals and resists pressure in air, oil, diesel fuel and hydraulic systems.
