3M 850-CLEAR (2-Inch-Roll) POLYESTER TAPE (72YD) (2-Inch-Roll)

Technical Details and Applications

Key Technical Specs

• Backing Material: High-strength polyester film with acrylic pressure-sensitive adhesive
• Thickness: ~0.05 mm (1.9 mil)
• Width / Length: 2 in (50.8 mm)  72 yd (65.8 m)
• Temperature Range: -50 °C to +150 °C (-60 °F to +300 °F)
• Tensile Strength: ~49 N/cm (28 lb/in)
• Elongation at Break: ~120%
• Adhesion / Peel Strength: ~3.3 N/cm (30 oz/in) over steel

Applications in Aircraft MRO / AOG

• Splicing films, insulation blankets, and lightweight interior materials
• Sealing and protecting surfaces or labels from chemical and solvent exposure
• Defect marking, masking, and temporary repairs without obstructing inspections
• Use in engine bays, access panels, and wiring looms where temperature and abrasion resistance are required

Compatibility & Safety

• Apply only to clean, dry, oil-free surfaces for optimal adhesion
• Not a structural adhesive; suitable for non-load-bearing applications only
• Avoid sharp bends beyond polyester limits to prevent cracking or peeling
• Check chemical compatibility with facility-specific solvents and cleaners
• Handle tape edges carefully; complies with RoHS and REACH standards

Packaging & Storage

• Roll size: 2 in 72 yd (50.8 mm X 65.8 m)
• Color: Transparent / CLEAR (also available in red, white, black, etc.)
• Shelf life: ~18 months at 16-27 °C (60-80 °F), 40-60% RH, away from sunlight

Why It�s Preferred for MRO

• Quick, non-structural fixes in routine and urgent maintenance scenarios
• Transparent backing allows inspection without removal
• High temperature and abrasion resistance ensures reliable performance under operational stress
• Readily available stock ensures fast response during AOG events

Handling Recommendations

• Keep ready stock in AOG kits for immediate use
• Inspect surfaces before application to maximize adhesion
• Combine with other protective films or masking tapes for layered protection