Rubber compound IRP-1377 NTA
aviation
Rubber compound IRP-1377 NTA TU 38 0051166-2015
heat-oil-petrol-aggressive rubber
is intended for the manufacture of rotating shaft seals and other sealing parts operating in air with a high ozone content, CIATIM-221 lubricant in the temperature range from minus 50 to plus 150ºС, in saturated steam at temperatures up to plus 150ºС, in NGZh-5U liquid in the temperature range from minus 55 to plus 125ºС, in water and solutions of acids and alkalis with a mass fraction of up to 20% in the temperature range from plus 4 to plus 100ºС, in the environment of technical ethyl alcohol - in the temperature range from minus 50 to plus 70ºС.
Heat-oil-benzo-aggressive-resistant rubber is more heat-resistant and technologically advanced compared to IRP-1287.
From a mixture of rubber IRP-1377 NTA, sealing parts are obtained with a 1,2-2,0 times increased service life.
Conditional tensile strength, MPa (kgf/cm2), not less than |
Elongation at break, %, not less than |
Shore A hardness, unit Shore A |
Frost resistance coefficient for elastic recovery after compression at a temperature of -50 ºС, not less than |
Residual deformation of compression after compression by 20% in air for 24 hours at 150 ºС, %, no more |
Residual deformation of compression after compression by 20% in liquid NGZh-5U for 24 hours at 125 ºС, %, no more |
Volume change in liquid medium NGZh-5U during 24 hours at 125 ºС, % |
Change in relative elongation after aging in air at 250 ºС for 72 hours, % |
10,8 (110,0) |
120 |
84-94 |
0,20 |
50 |
25 |
от 10 до 28 |
от -40 до 15 |
Technological properties: the rubber compound is molded, injected under the workpiece on a twin-screw injection machine and on an injection press.
Warranty period of storage - 3 months.