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APG’s C-4409 - Synthetic Fiber Sheets with Nitrile Binder has an expanded metal reinforcement. The galvanized low carbon steel insert makes this material suitable for conditions with high thermal and mechanical stress. C-4409 is excellent in hot gases and can replace spiral wound gaskets in some applications. This material is manufactured with synthetic fiber reinforced with a nitrile binder.
Benefits & Features
Performance
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Suitable for hot gases
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Resistant to mechanical stress
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Resistant to high temperatures
Features
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Expanded metal reinforcement
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Synthetic fiber
Product Specifications
Typical Values Refer to 1/16'' Thick Material Unless Noted
| Creep relaxation ASTM F38B (1/32") | 20 % |
| Compressibility ASTM F36J | 6 - 12 % |
| Recovery ASTM F36J | 50 % minimum |
| KLINGER Hot Compression Test | |
| 1 Thickness Decrease 73°F (23°C) | 1 10 % initial |
| 2 Thickness Decrease 572° F (300°C) | 2 10 % additional |
| Weight increase ASTM F146 after immersion in | |
| Fuel B, 5h/73°F (23°C) | 10 % maximum |
| Thickness Increase ASTM F146 after immersion in | |
| 1 ASTM Oil IRM 901, 5h/300°F (149°C) | 1 0 - 5 % |
| 2 ASTM Oil IRM 903, 5h/300°F (149°C) | 2 0 - 3 % |
| 3 ASTM Fuel A, 5h/73°F (23°C) | 3 0 - 5 % |
| 4 ASTM Fuel B, 5h/73°F (23°C) | 4 0 - 5 % |
| Density ASTM F1315 | 125 lb/ft ³ (2.0 g/cc ³) |
| ASTM F104 Line Call Out | F712112B3E11M8 |
| 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.
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