C-4409 - Synthetic Fiber Sheets With Nitrile Binder

Technical Sheet

4409g

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

  • Suitable for hot gases

  • Resistant to mechanical stress

  • Resistant to high temperatures 

Features

  • Expanded metal reinforcement 

  • 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

 

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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

C-4409 g&s

Liquids

C-4409 liquid

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.