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E-mail
hualingmf@163.com
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Phone
18633757507
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Address
Guang'an Town Industrial Zone, Dacheng County, Langfang
Langfang Saio Sealing Materials Co., Ltd
hualingmf@163.com
18633757507
Guang'an Town Industrial Zone, Dacheng County, Langfang
High pressure graphiteOil resistant asbestos rubber sheet manufacturerAsbestos board, asbestos rubber board, high-pressure asbestos board, medium pressure asbestos board
Oil resistant asbestos board is made from high-quality asbestos and oil resistant synthetic rubber as raw materials, which are pressed and vulcanized.
Asbestos board specifications:
1000*1500mm; 1500*2000mm; 1500*4000mm; 2710*3810mm 等
Asbestos board is divided into two types: NY asbestos board and ordinary asbestos board.
NY asbestos board is further divided into: NY250, NY300, NY400, NY450
Ordinary asbestos board is further divided into XB250, XB350, XB450, and XB550
Oil resistant asbestos board can be customized according to different temperatures, media, and pressure levels.
Technical parameters of oil resistant asbestos board:
Grade tensile strength applicable temperature density
XB250 ≥6.0MPa +250°C 2.0g/cm³
XB300 ≥8.0MPa +300°C 2.0g/cm³
XB350 ≥9.0MPa +350°C 2.0g/cm³
XB450 ≥19.0MPa +450°C 2.0g/cm³
There are several general forms of gasket structures available for reference:
1. Commonly used for flange connections
a. Flat gasket: Materials commonly used include medium pressure asbestos, non asbestos, oil resistant asbestos, polytetrafluoroethylene, graphite gasket or reinforced graphite gasket, metal flat gasket, special metal gasket, etc.
b. Wrapped gasket: with outer ring or inner and outer rings (commonly used for convex flat flanges); Internal ring (commonly used for concave convex flanges); The sealing surface of the basic type (without inner and outer rings) and slotted flange is narrower, and on the flat welding full plane flange, the sealing surface is wider, equivalent to a wrapped gasket with inner and outer rings. Attention must be paid to which standard the flange is based on
2. Various fillers are commonly used for rotating and pulling shaft seals. For example, flexible graphite rings (with and without openings), disk roots (or packing rings) woven from various materials, YX rings and O-rings for internal and external skeleton oil seals of various materials, etc
3. Sealing products for special areas. Common ones include various sealing strips, PTFE ball valve seats, graphite rings, and rubber butterfly valve rings
What should be noted when installing seals?
1. Do not damage the sealing surface or sealing line of the sealing element. The sealing performance of flat sealing elements depends on the upper and lower end faces; The sealing performance of hydraulic seals depends on the lip line associated with the hole or shaft, which is composed of special materials such as temperature resistant, corrosion-resistant, and aging resistant graphite, rubber, and fiber that are both soft and elastic. Therefore, special protection and care are needed during handling, installation, and pipe maintenance. Once damaged, it often leaves a great hidden danger to the sealing parts;
2. It is not allowed to install forcefully. During construction, it is not allowed to be rough or rough. Forcefully installing with large movements will inevitably damage the original prefabricated structure of the seal, just like crushing precast concrete and filling it into the required parts will inevitably lead to * *. The installation of such seals must be very careful and meticulous, and the embedding must be carried out step by step;
3. Balance and symmetry should be emphasized during installation. Place the seal in a position that precisely fits the effective sealing surface (or lip line). After the system is put into use, further observation and follow-up work to tighten the sealing components are needed to prevent the system from breaking due to micro leaks caused by changes in working conditions (such as pressurization) during operation.
Oil resistant asbestos rubber sheetIt is made of high-quality aramid fibers, NBR oil resistant rubber, fillers, dyes, etc., which are molded into boards under high temperature and high pressure. It fundamentally eliminates the toxic disadvantages of asbestos rubber sheets. Can be used in oily environments.
Oil resistant asbestos free board is made of high-quality aramid fibers NBR oil resistant rubber Filler material Dyeing agents are molded into boards under high temperature and high pressure She essentially eliminated the toxic drawbacks of asbestos rubber sheets Can be used in oily environments
High pressure graphiteOil resistant asbestos rubber sheet manufacturermain applications:>Suitable for water High temperature steam Compressed air Pipeline interface Heat exchanger Valves, etc >It can be used for oil-bearing conditions
Price of asbestos rubber sheetmain features:>100% asbestos free>suitable for a wide range of temperatures and pressures
Price of asbestos rubber sheetTechnical data:
project |
model |
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B10220 |
B10230 |
B10240 |
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Density g/cm3 |
1.8~2.0 |
1.8~2.0 |
1.8~2.0 |
Tensile strength ≥ Mpa |
6 |
9 |
12.5 |
Compression ratio ≥% |
12+/-5 |
12+/-5 |
12+/-5 |
Rebound rate ≥% |
40 |
45 |
45 |
Aging coefficient |
0.9 |
0.9 |
0.9 |
Stress relaxation ≤% |
45 |
45 |
45 |
sealed environment |
High temperature: 200oC Extreme pressure: 2-3Mpa No deformation for 30 minutes |
High temperature: 300oC Extreme pressure: 4~5Mpa No deformation for 30 minutes |
High temperature: 400oC Extreme pressure: 8-9Mpa No deformation for 30 minutes |
High temperature (use). OC |
200 |
300 |
400 |
Great pressure Mpa |
1.5 |
3.0 |
5.0 |
Applicable Medium |
Water Sea water Steam Fuel. Gas Salt solution and other media |
||
Asbestos rubber sheet is made by pressing asbestos, rubber, and filler. According to their different formulas, processes, performance, and uses, there are mainly categories such as high-pressure asbestos rubber sheets, medium and low-pressure asbestos rubber sheets, oil resistant asbestos rubber sheets, acid and alkali resistant asbestos rubber sheets, etc.
As a sealing material for pipeline flanges, high-pressure vessel flanges, and various mechanical connection surfaces, it can be used to punch various gaskets with good sealing performance and acid and alkali resistance requirements. When in use, gaskets of various shapes and sizes are generally punched according to requirements. Has moderate hardness, acid and alkali resistance. Can work in 20% acidic (alkaline) liquids at temperatures between -30 ° C and+60 ° C.
Saio Sealing is a professional manufacturer of oil resistant asbestos rubber sheets. Saio Sealing aims to pursue the production of genuine and reliable good products, and will not deceive customers by any means or improper behavior, because customers are the foundation of our survival. We will not joke with our "life". Our service is attentive, our attitude is sincere, and we have gained the recognition of our customers. If you purchase our products, we will never disappoint you, because our products are high-quality, affordable, and comprehensive in terms of quality, price, and model.