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      C-4439 - Fiberglass, Aramid, And Inorganic Fiber Sheets With Nitrile Binder

      Technical Sheet

      APG's C-4439 - Fiberglass, Aramid, and Inorganic Fiber Sheets with Nitrile Binder is an excellent high-performance material for use in high temperature and high-stress applications.

      The expanded metal reinforcement is a galvanized low carbon steel insert which makes this material suitable when vibrations are present.

      This material is manufactured with a combination of fiberglass and aramid and inorganic fibers reinforced with a nitrile binder.

      		 4439r

       

      Performance & Features

      Performance Features

      • Max Temperature in Liquids: 775°F

      • Max Temperature in Steam: 500°F

      • Aramid Fibers 

      • Fiberglass

      • Galvanized low carbon steel insert

       

      Performance 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 %
      KLINGER Hot Compression Test  
      1 Thickness Decrease 73°F (23°C) 1 10 % initial
      2 Thickness Decrease 572° F (300°C) 2 6 % additional
      Weight increase ASTM F146 after immersion in  
      Fuel B, 5h/73°F (23°C)
      		 9 % 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 5 - 10 %
      Dielectric Strength ASTM D149-95a 10 kV/mm
      Density ASTM D149-95a 131 lb/ft ³ (2.1 g/cc ³)
      Leachable Chloride Content FSA Method 150 ppm
      ASTM F104 Line Call Out F712112B3E12K6M8
      Color

      Red

       

      DOWNLOAD SPEC SHEET

       

      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-4439 g&s

      Liquids

      C-4439 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.