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.