Permacel P421 (12-mm-Roll)
TEFLON 5-MIL TAPE (33M) (12-mm-Roll)
AERO P/N: 104905
Total Available Stock: 76
UK
USA
76 In Stock (UK)
Available On Request
Expiry Date: 14/Dec/2028
Estimated Lead Time: 32 days
$189.21 excl VAT
P-421 (12-mm-Roll) is a high-temperature aerospace tape featuring PTFE backing and strong dielectric properties. Provides durability, corrosion resistance, and smooth surface protection in electrical and mechanical applications. Suitable for wiring insulation and component protection in aviation environments.
Product Features
OEM
Nitto
OEM Part No.
P4210012.70033
Colour
-
Shelf Life in Months
35
Shelf Life in Days
1050
UN No
-
Class
-
PG
-
ECCN
EAR99
Country of Origin
United States
Commodity Code
3920995990
Product Type
Tapes
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Information
P-421 PTFE Tape
Overview
P-421 is an extremely durable PTFE film tape engineered for demanding aerospace, electrical, and industrial applications. Featuring a cured silicone adhesive and high-performance PTFE backing, the tape provides excellent high-temperature resistance, dielectric strength, chemical resistance, and low-friction surface properties. It is widely used where slick surfaces, electrical insulation, or release properties are required.
Key Technical Specs
- Backing Material: PTFE Film
- Adhesive: Cured Silicone
- Colour: Grey
- Total Thickness: 0.17 mm (6.8 mil)
- Tensile Strength: 116 N/10 mm
- Elongation: 143%
- Adhesion to Steel: 4.0 N/10 mm
- Dielectric Strength: 17.8 kV
- Operating Temperature: Up to 180°C (356°F)
Approvals & Specifications
- UL-510 Certified
- CSA-C-22-2 Certified
- CID-A-A-59474C Type I, Class 4
- Replaces obsolete MIL-T-23594C Type I, Class 4
- ASTM D2686
- Boeing BAC 5034-4 Type VII, Class 2
- Boeing BAC 5157
- Boeing BAC 5153
- Boeing BAC 5158
Typical Applications
- Roller protection and low-friction surfaces
- High-temperature aerospace and electrical applications
- Magnet wire insulation in large components
- Heat sealer bars and release surfaces
- Anti-vibration cushioning and gasketing
- Protection against electrolytic corrosion between dissimilar metals
- Masking during chemical cleaning and electroplating processes
Key Features & Benefits
- Excellent high-temperature performance
- High dielectric strength for electrical insulation applications
- Low-friction PTFE surface improves material movement
- Outstanding resistance to acids, solvents, fuels, and alkalies
- Reduces equipment wear in moving applications
- Durable silicone adhesive system for demanding environments
Compatibility & Safety Notes
- Suitable for aerospace, industrial, and electrical environments
- Compatible with many aggressive chemicals and solvents
- Ensure surfaces are clean and dry before application
- Use appropriate PPE when handling in chemical processing environments
Packaging & Procurement
- Supplied in roll format
- Available in multiple widths and lengths depending on application requirements
Why This Product is Chosen for Aerospace / MRO
- Provides reliable insulation and release performance at elevated temperatures
- Reduces wear on rollers and moving surfaces
- Offers excellent chemical resistance for harsh maintenance environments
- Approved to multiple aerospace and military specifications
Practical Suggestions for Your Team (AOG Mindset)
- Apply to clean, contamination-free surfaces for best adhesion
- Use in high-friction areas to reduce maintenance wear
- Ideal for temporary masking during plating and chemical processing
- Monitor edge wear in high-cycle moving applications
Manufacturer / Aviation Spec Codes
- Product Name: P-421
- Product Type: PTFE film tape with silicone adhesive
- Specifications: BAC 5034-4 / BAC 5157 / ASTM D2686
- Application: Aerospace insulation, release, and anti-friction tape
Restrictions
Restrictions
Restricted
Dry Ice
No
Precursor Licence
Export Licence
FEDEX Restriction
Supplier Disruption
no
Recommended Alternatives
Bought Together
Shipping Information
- Orders over £100 online are eligible for FREE UK Mainland delivery.
- Collection for orders is available for all customers. At Checkout, please select 'Ex-Works/Collection'.
- European Delivery is available for selected countries. Shipping costs will be calculated according to the weight of the products.
- Refrigerated shipping required for shipments going by sea or exceeding 7 days transit time.
- For additional information, please see our shipping page.