PTFE Tape Under Long-Term Immersion: Performance Stability & Degradation Risks
For PTFE high-temperature tapes under long-term immersion, the PTFE substrate remains chemically inert, but the adhesive layer is the weak point. Water weakens silicone PSA; saltwater accelerates corrosion. For aggressive chemicals, fluorosilicone or perfluoropolyether adhesives – or adhesive-free PTFE tape – are required. Peel strength loss up to 40% after 48 hours in water.
