3M 431 (50-mm-Roll)
ALUMINIUM FOIL TAPE (50-mm-Roll)
AERO P/N: 105704
Introducing 3M 431 PTFE Tape, a chemical-resistant sealing tape for threaded joints and fluid system connections.
Provides reliable leak prevention while allowing clean disassembly during maintenance.
Suitable for aerospace fuel, hydraulic, pneumatic, and oxygen system sealing.
Product Features
OEM
3M
OEM Part No.
-
Colour
-
Shelf Life in Months
24
Shelf Life in Days
720
UN No
-
Class
-
PG
-
ECCN
EAR99
Country of Origin
United States
Commodity Code
3919101990
Product Type
Tapes
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Information
Additional Product Information
Overview
3M 431 PTFE Tape is a high-performance sealing tape used in aircraft fluid systems to ensure leak-free joints on threaded fittings. In aviation MRO environments, it is relied upon for its chemical resistance, vibration tolerance, and wide service temperature range. Maintenance teams depend on it for fast, compliant sealing during fluid system assembly and repair.
Key Technical Specs for 3M 431 PTFE Tape
- Type: PTFE sealing tape
- Width: 50 mm (1.97 in)
- Color: White
- Viscosity / Consistency: Solid PTFE film
- Cure / Working Time: None (instant seal on application)
- Tensile / Peel Strength: High tear resistance for PTFE tape
- Shore Hardness: N/A
- Service Temperature: -240°C to +260°C (-400°F to +500°F)
- Typical Uses: Thread sealing on aircraft fluid fittings
- Shelf Life: Indefinite when stored properly
Approvals & Specifications
- Used in aviation fluid system maintenance
- Specification codes: Not specified
Typical Aircraft MRO / AOG Applications
- Sealing large-diameter hydraulic and pneumatic fittings
- Fuel, oil, air, and inert gas line maintenance
- Routine consumable for fluid system assembly and repair
Compatibility & Safety Notes
- Compatible with aviation fuels, oils, hydraulic fluids, and solvents
- Non-reactive and non-hardening
- Ensure clean threads before application
Packaging & Procurement
- Supplied in roll format
- Wide format suited for large fittings
- Easy to store and deploy in AOG kits
Why 3M 431 PTFE Tape is Chosen for AOG / MRO
- Immediate sealing with no cure time
- Excellent resistance to vibration and temperature extremes
- Reliable, repeatable results in critical fluid systems
Practical Suggestions for Your Team (AOG Mindset)
- Stock multiple widths to cover different fitting sizes
- Train technicians on correct wrap direction and overlap
- Keep sealed rolls in fluid-system toolkits
Manufacture / Aviation Spec Codes
- Manufacturer: 3M
- Product ID: 431 PTFE Tape
Alternative Names & Descriptions
- 3M PTFE Thread Seal Tape
- 3M 431 Thread Sealing Tape
- Aviation PTFE Sealing Tape
- Aircraft Fluid System PTFE Tape
- 3M White PTFE Tape
Restrictions
Restrictions
Restricted
Dry Ice
No
Precursor Licence
Export Licence
FEDEX Restriction
Supplier Disruption
no
Recommended Alternatives
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Shipping Information
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