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APG's C-4401 is a high-quality general service sheet, manufactured with synthetic fibers and an NBR binder. Gaskets made from C-4401 are recommended for use in sealing against oils, solvents, fuels, non-aggressive solutions, and service conditions up to 750º.
Performance & Properties
Performance
Max Temperature: 750º
Continuous Max: 400º
Continuous Max with Steam: 450º
Max Pressure: 1400 psi
Properties
Petrochemical, Chemical
Paper, Food
Steel, Mining
Transportation, Aerospace
Product Specifications
Typical Values Refer to 1/16'' Thick Material Unless Noted
| Creep relaxation ASTM F38B (1/32") | 20 % |
| Sealability ASTM F37A (1/32") | < 0.25 ml/hr |
| Gas Permeability DIN 3535/6 | < 0.5 ml/min |
| Compressibility ASTM F36J | 7 - 14 % |
| Recovery ASTM F36J | 50 % minimum |
| KLINGER Hot Compression Test | |
| 1 Thickness Decrease 73ºF (23ºC) | 1 14 % initial |
| 2 Thickness Decrease 572º F (300ºC) | 2 17 % additional |
| Weight increase ASTM F146 after immersion in | |
| Fuel B, 5h/73ºF (23ºC) | 10 % maximum |
| Thickness Increase ASTM F146 after immersion in | |
| 1 ASTM Oil IRM 901, 5h/300ºF (149ºC) | 1 0 - 5 % |
| 2 ASTM Oil IRM 903, 5h/300ºF (149ºC) | 2 0 - 5 % |
| 3 ASTM Fuel A, 5h/73ºF (23ºC) | 3 0 - 5 % |
| 4 ASTM Fuel B, 5h/73ºF (23ºC) | 4 0 - 10 % |
| Dielectric Strength ASTM D149-95a | 14 kV/mm |
| Density ASTM F1315 | 112 lb/ft³ (1.8 g/cc³) |
| Leachable Chloride Content FSA Method | 100 ppm |
| ASTM F104 Line Call Out | F712121B3E12K6M5 |
| Color | Green |
Pressure/Temperature Graphs
The pressure/temperature graphs shown are the most current method of determining the suitability of a gasket material in a known environment. However, chemical compatibility must also be considered.
pT diagram for thickness 1/16":
Gases & Steam
Liquids
In area 1 the gasket material is suitable using common installment practices subject to chemical compatibility
In area 2 appropriate measures are necessary for installation of the gasket to ensure maximum performance.
In area 3 do not install gaskets in these applications without first contacting APG for technical support service.
