APG C-4401 Sheet Gasket Material

Technical Sheet

4401g

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 750°F.

Performance & Properties

Performance

  • Max Temperature: 750°F

  • Continuous Max: 400°F

  • Continuous Max with Steam: 450°F

  • 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 73°F (23°C) 1 14 % initial
2 Thickness Decrease 572° F (300°C) 2 17 % 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 - 5 % 
3 ASTM Fuel A, 5h/73°F (23°C) 3 0 - 5 % 
4 ASTM Fuel B, 5h/73°F (23°C) 4 0 - 10 %
Dielectric Strength ASTM D149-95a 14 kV/mm
Density ASTM F1315 112 lb/ft ³ (1.8 g/cc ³)
Leachable Chloride Content FSA Method 100 ppm
ASTM F104 Line Call Out F712121B3E12K6M5
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

4400,-4401G&S

Liquids

4400,-4401-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.