Since its establishment in 1993, Dongsuh Industry Co., Ltd. has specialized in manufacturing SEALING products for power generation facilities in Korea. In particular, as we manufacture SEALING products, which are mostly used in critical power generation equipment systems, we value quality stability and develop excellent technical skills.
The reliability of quality has been verified by acquiring 'Q', the highest level of safety of qualified suppliers, including ISO 9001 and 14001, and the five leading power companies under the Korea Electric Power Corp. have various quality certificates. We are also conducting R&D to continuously improve quality, improve working environment, and develop new products.
Based on these efforts, we have won awards for excellent suppliers to major power generation companies in Korea and expanded our production lines by steadily increasing sales. We are now trying to move beyond the domestic market to the global market.
SPIRAL WOUND GASKETOutstanding capability for high temperature and high pressure
Automatic flexibility and recovery from the change of temperature, pressure, vibration and working conditionsEfficient production for any type of dimensions such as round or oval type, etc.Outstanding sealing capability as it is produced according to the pressure of unbalanced flange.
Hoop and Filler materials can be selected according to special operating conditions.
GRAPHITE MOLD PACKING
â?¢ Graphite Tape Packing is the packing that compressed and molded in a certain dimension for easy installation.
â?¢ The graphite's self-lubrication capability and low coefficient of friction allow to use in a wide range without giving damage on the reciprocating and rotary shaft.
â?¢ If you want to disassemble only gland without disassembling pump and valve, you can just cut it and deliver.
â?¢ You can get better sealing effects if you use with ALS910C, ALS900G and ALS955W depending on the use purpose.
RING JOINT GASKET
Ring joint gasket is a type of pressure energized gasket used on pipe flanges, pressure vessels, Valve bonnets handling, high pressure steam, gas, hot oil, solvent vapor at high temperature.
DONGSUHs experienced technology offers many different types so that customers may select the most suitable one in accordance with operating conditions.
MECHANICAL PACKING (VARIOUS MODELS DEPENDING ON CONDITON)
PTFE V-PACKING
SPRING ENERGIZED SEAL
Sealing gasket Material:spairal wound gasket is formed of v-shaped of w-shape stainless steel stripe and soft nonmetallic packing or the material of flexible graphite asbestos, nonasbestos, ptfe etc by means of piled.The(inner/outer) ring:carbo steel, ss304, ss316, moneluse temperature:-200-870ípc use pressure:30mpaapplication range:the static sealing element of pipe, valve, pump, thermal exchange, condensing motorcycle, auto vent-pipe, tower, plain hole and hole of flange, etcsupplying specification:dn10-300-0mm According to the requirements of packaging
The basic properties of selected materials Material Hardness(HB) Temperature(íµ) Soft iron 90 530 Carbon Steel 120 530 304(L)íó321íó316(L) 160 750 5Cr1/2Mo 130 500.
The basic properties of selected materials Material hardness(hb) temperature Soft iron 90 530 Carbon steel 120 530 304(l)íó321íó316(l) 160 750 5cr1/2mo 130 500.
Features Specifications: Main properties : Properties unit Result Apparent density g/cm3 2.10-2.30 Tensile strength(min) MPa 18 Ultimate elongation(min) % 230. Applications:- Insulating cover for conductor, pipe for corrosive fluids.
Supplier: Gasket, sealing packing, sealing sheet, sealing stuff
Non-asbestos Gasket Good Alternative To Compressed Asbestos Gasket Non-Asbestos Gasket is a general-purpose sheet material reinforced with high-grade asbestos-free fibers and bonded with heat-resistant nitrile rubber. It has excellent anti-stick performance on both sides. It is a good alternative to compressed asbestos gasket. The gasket is suitable for engineering, automobile, chemical, oil & gas, petrochemical, power generation, paper, glass & ceramic, sugar, steel, smelter, boiler, pharmaceutical, Marin and all applications where needs higher temperature and pressure resistance and where non-critical gaseous and liquid media have to be sealed off. COMMON SPECIFICATIONS Thickness (mm) 0.46.0 Available size (m) 1.5 1.6, 1.5 2, 1.5 3, 1.5 4, 1.5 6 Maximum continuous working temperature 650 °F Steam max continuous working temperature -100 °F Maximum pressure 85 bar Tensile strength (MPa) 13 Residual stress (MPa) > 22 Compressibility 6% Cold compressibility 8% Cold recovery 3% Hot creep 22% Hot recovery 2% Density (g/cm3) 1.62.0 Gas permeability (mL/min)
ASBESTOS GASKET IDEAL INSULATING AND CORROSION RESISTANT MATERIAL Asbestos Gasket is inexpensive, readily available and stable. It is fireproof and can withstand extreme heat making it the ideal thermal isolation material. As well, asbestos gaskets are non-corrosive, impervious to chemical reactions and non-conductive of electricity. It is widely used in exhaust systems, turbo chargers and cylinder. TYPES White fibrous chrysotile asbestos on a black background Chrysotile asbestos Grey acicular fiber amphibole asbestos on a black background Amphibole asbestos COMMON SPECIFICATIONS Thickness (mm) 0.46.0 Plate sizes (mm) 1000 1500, 1270 1270, 1270 1300, 1270 3810, 1300 1300, 1350 1350, 1350 1500, 1360 1500, 1500 1500, 1500 2000, 1500 3000, 1500 4000, 1500 4100, 1500 4500, 2000 3000 Maximum continuous working temperature 200 °C Steam max continuous working temperature 120 °C Maximum operating pressure 70 bar Maximum pressure (MPa) 1.5 Tensile strength (MPa) 6 Compressibility 12 ± 5 % Density (g/cm3) 1.62.0 Color red, green, blue, yellow, black, gray and more ple in.
COPPER GASKETS WITH GOOD JOINTING AND SEALING PERFORMANCE Metallic Gasket are commonly known as oxygen-free copper solid copper gasket. They are stamped from 1/4 hard, high purity, oxygen free copper stock. The design of the gasket is an object used to seal the joint between two surfaces or objects in order to prevent leaks, corrosion or contamination in a system where the two objects being joined are not perfectly matched. In addition, copper is a very soft metal. This means it can provide a cushion or support between objects or parts in the system. What's more, copper gaskets have good jointing and sealing performance which makes them widely used on engines and flanges. AVAILABLE SHAPES Special shapes can be customized according to your requirements. There are many different sizes of O-ring copper gaskets on the white background. O-ring copper gaskets There are six 2-bolt copper gaskets on the background. 2-bolt copper gaskets 3-bolt copper gaskets on the background. 3-bolt copper gaskets A customized copper gasket-01 on the white background. Customized copper gasket-01 Two customized copper gasket-02 on the white background. Customized copper gasket-02 A customized copper gasket-03 on the white background. Customized copper gasket-03 COMMON SPECIFICATIONS Section Item OD (mm) ID (mm) Thickness (mm) A copper gasket on the white background. Copper gasket CG-01 16 12 2 CG-02 21 16 2 CG-03 35 26 2 CG-04 48 37 2 CG-05 62 52 2 CG-06 99 82 2 CG-07 120 101 2 CG-08 171 152 2 CG-09 222 203 2 CG-10 294 269 2 Note: Special sizes can be customized. FEATURES Superior thermal conductivity. This feature stabilizes the head and block temperature. Oil resistance. Corrosion resistance. 25% coefficient of elasticity. High tensile strength. The tensile strength of copper is about 32000 psi. APPLICATIONS Copper gaskets are used to mate two vacuum flanges together. Engines. Copper head gaskets are the superior choice for blown, nitrous, turbo-charged and high compression engines. And the automotive and aerospace industries are the biggest consumers. Pipelines. Copper gaskets are used on the flange. Copper gaskets for flange Copper gaskets are used on the engine. Copper gaskets for engine A pipe with copper gaskets is being inserted. Copper gaskets for pipeline
REINFORCED GRAPHITE GASKET WITH METAL MESH, FOIL OR TANGED METAL Reinforced Graphite Gasket is an improved semi-metal gasket reinforced by a metallic mesh, foil or tanged metal. It is laminated from compressed layers of purified natural graphite flake and mechanically bonded with the stainless steel tangs to ensures the material retains dimensional stability in high temperatures. Reinforced graphite gasket has many excellent sealing properties, such as heat stability, self-lubrication, corrosion resistance and without being brittle and aging. In addition, under extreme conditions, reinforced graphite gasket can be used stably for long time without maintenance. So it is suitable for pipe, valve, pump, pressure container, heat exchanger and condensate. Reinforced graphite gasket can be made into special shapes. COMMON SPECIFICATIONS Reinforced material: Low carbon tanged metal. Stainless steel tanged metal. Stainless steel flat sheet. Stainless steel mesh sheet. A piece of reinforced graphite gasket with low carbon tanged reinforced layer. Low carbon tanged metal reinforced layer A piece of reinforced graphite gasket with stainless steel tanged reinforced layer. Stainless steel tanged metal reinforced layer A piece of reinforced graphite gasket with stainless steel flat sheet reinforced layer Stainless steel flat sheet reinforced layer A piece of reinforced graphite gasket with stainless steel mesh sheet reinforced layer Stainless steel mesh sheet reinforced layer Reinforced Materials Pressure (N/mm2) Compressibility (%) Recovery (%) Gas Permeability (cm3/min) (T=1.5 mm) Sealing Quality (T=1.5 mm) Sealing Constant N2m (1/hr) Bumming Oil AM (1/hr) "M" "Y" Tanged Carbon Steel Gasket â?¥ 4.8 3035 1520 â?¤ 0.8 30 < 0.5 3.0 9000 SS304/SS316 Tanged Gasket 3035 1530 â?¤ 0.8 60 2.5 4000 SS304/SS316 Flat Gasket 3040 1015 â?¤ 0.4 35 2.0 900 SS304/SS316 Mesh Sheet 4050 1520 â?¤ 0.1 70 3.0 5000 FEATURES Corrosion proof. High purity and density. Long using life. High temperature resistance. Excellent compressibility and recovery. No softening point. APPLICATIONS Reinforced graphite gasket is suitable for pipe, valve, pump, pressure container, heat exchanger, condensate punched flange, cylinders of diesel engines and water meter. Reinforced graphite gaskets are used on the valves on the white background. Reinforced graphite gaskets for valve One hand is using a brush to wipe the reinforced graphite gasket mounted on the flange. Reinforced graphite gaskets for flange
