1/2" x 520" Thread Seal Tape, Medium Density

Mill-Rose Clean-Fit 70989 PTFE Thread Seal Tape – 1/2" x 520", Medium Density

The Mill-Rose 70989 PTFE Thread Seal Tape is a medium-density thread sealing solution made from 100% pure virgin polytetrafluoroethylene. It is engineered for use on metal and plastic threaded connections in piping systems that carry water, air, steam, hydraulic fluids, and other compatible gases and liquids.

This tape is manufactured without stretching, maintaining consistent density for uniform sealing coverage. It is chemically inert, non-flammable, and suitable for use in environments requiring resistance to aggressive media and elevated system pressures.

Product Specifications

• Material: 100% virgin PTFE
• Dimensions: 1/2 inch width × 520 inch length
• Thickness: 0.0025 inch
• Density: Medium (approximately 1.0 g/cm³)
• Pressure Rating: Up to 10,000 psi (non-aqueous systems)
• Temperature Range: Effective from -450°F to +500°F
• Shelf Life: Indefinite under proper storage conditions

Key Performance Attributes

• ✔️ Chemically Inert: Safe for use with most common industrial fluids and gases
• ✔️ Thermal Stability: Maintains seal integrity under wide temperature fluctuations
• ✔️ Lubricating Properties: Aids in joint assembly and reduces the risk of thread galling
• ✔️ No Hardening: Will not dry out or crack over time
• ✔️ Non-Toxic & Non-Flammable: Suitable for systems requiring clean, stable sealing material

Installation Guidance

• Clean male threads thoroughly before application
• Apply tape in the direction of thread engagement (typically clockwise)
• Use 2 to 3 full wraps for standard 1/2" NPT fittings, overlapping 50% on each pass
• Avoid overwrapping or using in systems carrying oxygen or highly reactive gases

Application Suitability

• ✔️ Potable and non-potable water systems
• ✔️ Pneumatic and hydraulic lines
• ✔️ Low-pressure steam lines
• ✔️ Compatible with PVC, CPVC, copper, brass, galvanized, and black iron pipe threads

This tape is intended for use in compliance with local mechanical codes and industry standards. It is not intended as a gap filler or structural joint compound. Always verify compatibility with system specifications before installation.