Paronite PA
Paronite PA (reinforced)
Reinforced sheet paronite (PA grade) is manufactured in accordance with the Specifications of GOST 481-80 and is intended for the manufacture of flat sealing gaskets. Due to the internal metal reinforcement, it has a second name - ferronite. For reinforcement, steel mesh No. 9 is used in accordance with GOST 3826. According to the State Standard, PA paronite is manufactured in all climatic versions (in tropical - with the use of fungicides). The minimum temperature of paronite, at which it remains operational, is minus 60 ° C.
Shape - sheets with a thickness of 0.8; 1.0; 1.2; 2.0 and 3.0 mm, standard dimensions from 400x300 mm to 1500x1000 mm.
Paronite gaskets with a diameter of up to 1500 mm are made from a single sheet, more than 1500 mm - from several parts by joining them in a "dovetail" or "overlapping" gluing.
Scope and operating conditions of reinforced paronite
|
Operating environment |
Maximum pressure, MPa |
Maximum temperature, °C |
Type of sealed connection |
Equipment types |
|
Steam (superheated and saturated), fresh water (superheated) |
10,0 |
+450 |
"Thorn-groove", "depression-protrusion", it is possible to seal "smooth" joints, provided the pressure of the working environment is not more than 4.0 MPa |
Pipelines, shut-off and control valves, pumps, compressors, internal combustion engines and other units |
|
Dry inert gases, air |
7,5 |
+250 |
||
|
Light and heavy oil products, oil fractions |
7,5 |
+400 |
The roughness of the surfaces to be joined for the installation of a paronite gasket should be no more than Rz = 40 microns.
At the request of the customer, paronite can be produced and supplied both in sheets and in the form of ready-made gaskets according to the customer's drawings.
Physical and mechanical properties of reinforced paronite
|
Parameter name |
Value |
|
Specific weight of paronite, g/cm3 |
1,9…2,5 |
|
The maximum increase in mass when holding the material for 5 hours in: - kerosene at temperature of +23°C, %; - in MS-20 aviation oil at temperature of +150°C, %; |
8…21 |
|
Relative compressibility under pressure of 35 MPa, % |
6…13 |
|
Recoverability after removal of the compressive force (35 MPa), %, not less than |
30 |