Compressed Sheet Gasket Packing,Asbestos Packing, Gasket

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Compressed Sheet Gasket Packing,Asbestos Packing, Gasket

use of gaskets is in the joining of flanges on pipe lines or valves

Asbestos packing and gasket seals have provided the best means of positively sealing hydraulic or pneumatic equipment.

No subject is of more pertinent interest to the mechanical engineer and plant executive than the proper operation of hydraulic or pneumatic equipment. Presses, valves, hoists, autoclaves, pumps and similarly controlled machinery can be a source of great expense when improperly sealed.

Materials:

Made of organic fibers(e.g aramid fiber), inorganic fibers, NBR rubber and a small amount of fillers processed by calendering and vulcanizing processes.

Specifications:
1. Width: 51″ x 130″,51”*83”,56″ x 90″,60”*130,56”*130”,46*130”
2. Density: 1. 6g/Cm3
3. Hardness: 70shoreA
4. Elongation: > 250% with Max. %600
5. Tensile strength: > 4. 0MPa
6. Low Temperature Usage (Fahrenheit): +10 to -50
7. High Temperature Usage (Fahrenheit): To 250

Physical properties:
Temperature,℃…………………………..≤ 150
Pressure, MPa …………………………….≤ 1.5
Tensile strength, MPa ………………≥ 9
Density, g/cm3 …………………… …1.6 ~ 2.0
Compressibility, %…………………….7~17
Recovery, % …………………………..≥ 35

emTemperature
(≤℃)
Density
(g/cm3)
Pressure
(≤MPa)
Tensile Strength
(≥MPa)
Recovery
(≥%)
Compressibility
(%)
Thickness
(mm)
XB1501501.6~2.00.85357~170.3~5.0
XB2002001.56
XB3003003940
XB350350412
XB40040051545
XB450450618
XB510510721
NY1501501.5935
NY2502502.51145
NY300300312.750
NY400400415
NY510500518
HNY30030012.7

Packing is a compressible and resilient material used as a seal on moving parts. Gaskets are used wherever two stationary pieces of metal are brought together in equipment handling liquids or gases. Gaskets are also termed stationary or static seals.

The most common use of gaskets is in the joining of flanges on pipe lines or valves. Seals and gaskets are identified basically by the method of application or type of construction

Gaskets prevent pipes and machinery from leaking by sealing the tight spaces in between metal parts, making them essential components of the industrialized world. Modern gasket manufacturers now use a number of heat-resistant substitutes for asbestos, but workers still commonly encounter the toxic mineral when taking apart old engines or industrial machinery.

Asbestos packings and gaskets are made by different techniques. Yarn can be twisted or braided into different shapes conforming to packing. or gasket requirements. The braided forms or asbestos fabrics can be coated, or impregnated with different compounds.

Cloth is one of the bases for sheet packing, folded, and wound packing. These packings in turn are formed into various shapes and sizes.

Sheet asbestos packing is considered one of the first applications of asbestos in the form of packing. This type of packing is available with such different combinations as wire reinforced asbestos fabric, graphite impregnated asbestos fabrics and others. Metallic products can be made from woven cloth which contains asbestos yarn—metal core.

This type of construction, impregnated with the various binders, has been very popular and useful in the manufacture of gaskets and packings.

Packing for high temperature must be firm and hard. The packing which is vulcanized in large coils is generally difficult to force into engineered cavities of equipment such as stuffing boxes. A common procedure is to wind these coils in spirals during the vulcanizing process so that they can be easily installed.

 

 

 

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