Heat Resistance Graphite Packing Spiral Wound Gaskets Flange Gasket
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- Supplier: Hejian Jiuling Trading Co. Ltd.
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Product Overview
Description
Specification
Place of Origin | Hebei, China |
Product name | Spiral Wound Gasket |
Size | Customer Demand |
Application | Industry |
Color | Silver |
Feature | High Temperature Resistance |
Type | A B C D |
Material Type | CRS+PFTE |
MOQ | 10pcs |
Packing | Carton |
Sample | Freely |
Product Description
DESCRIPTION
The metal winding gasket (basic type) is made of high quality SUS304, SUS316(“V” or “W” shape) metal belt and other alloy materials and soft materials such as graphite, asbestos, polytetrafluoroethylene, non-asbestos, etc. , spot-weld the metal band at the beginning and end.
STRUCTURE AND CODE
Basic type | Code name | Applicable flange sealing face |
Basic Type | A | Dovetail face |
With inner ring type | B | Concave and convex surface |
Ring type with pair | C | A plane or protuberance |
With inner ring and middle ring type | D | A plane or protuberance |
FEATURES
1. wide range of operating conditions. Able to withstand high temperature, high pressure and adapt to the use of ultra-low
temperature or vacuum conditions. By changing the material combination of the gasket, the problem of chemical corrosion of the gasket by various media can be solved.
temperature or vacuum conditions. By changing the material combination of the gasket, the problem of chemical corrosion of the gasket by various media can be solved.
2. Strong ability of stress compensation. The sealing performance is stable and reliable in the working position where the temperature and pressure fluctuate frequently.
3. Good sealing performance.
4. The surface precision of flange sealing surface contacting with gasket is not high.
5, easy to install, gasket preload pressure is low.
Metal winding pad with PTFE
Graphite filled metal winding pad
Graphite filled metal winding pad
MATERIALS
1. Metal band
A. 08F0CR13,0Cr18Ni19Ti, 0Cr18Ni9Ti, 00CR18NI10,0CR18NI12MO2TI, 00CR17NI14MO2 and other cold-rolled steel strips with thickness of 0.15 mm ~ 0.25 mm were used, or were decided by both the supplier and the demand.
B. The metal band should be preformed v-or W-type narrow band with smooth surface. Clean, not rough. Crack. Cut. Defects such as pits and rust spots.
C. The hardness of stainless steel HV ≤200
2.Non-metallic strips
A.non-metallic strips are specially made of asbestos, flexible graphite, polytetrafluoroethylene, non-asbestos fiber and mica, etc. .The thickness of the belt is 0.3-1.0 mm.
B. The loss on ignition of special asbestos must be less than 25%
C. The content of chloride ion in nonmetal band is less than 100 ppm
D. Temperature and pressure are recommended for all types of media and non-metallic tapes
Dielectric material | Asbestos | Graphite | Non-asbestos | PTFE |
Water Media | 600℃，CL 2500 | 550℃，CL 1500 | 350℃，CL 1500 | -200-260℃，CL 1500 |
Oil medium | 500℃，CL 1500 | 550℃，CL 600 | 350℃，CL 600 | -200-260℃，CL 600 |
Gas medium | 400℃，CL 600 | 550℃，CL 400 | 350℃，CL 400 | 200-260℃，CL 400 |
Note: Graphite can be used up to 800 ° C in non-oxidizing medium.
Materials | Temperature ℃ | Maximum work pressure | Suitable medium | Compression Rate% | Rebound% | Stress relaxation rate% |
Expanded graphite | -220--550 | 250 BAR | Corrosive medium | 18--30 | ≥17 | ≤18 |
Special Asbestos Tape | -200---600 | 18--30 | ≥19 | ≤28 | ||
PTFE | -200-- 250 | 100 BAR | Corrosive medium | 18--30 | ≥15 | ≤13 |
Non-asbestos materials | -100--250 | 100 BAR | General air tightness | 18--30 | ≥19 | ≤28 |
Mica | -150--800 | 100 BAR | High temperature | 18--30 |
3. Unless otherwise agreed, the material of the inner ring shall be the same as that of the metal strip. The material of the outerring shall be A3 steel and shall be antirust.
Special material winding gasket
Using 321, dual-phase steel, Monel, indium nickel, Harrington alloy, special stainless steel or alloy materials, such as titanium, are used as winding gaskets, which are made of winding steel belt, inner and outer rings, high purity nuclear grade graphite, expanded tetrafluoro, non-asbestos and other non-metallic materials, flange sealing under special working conditions such as strong radiation.
Performance characteristics
Can be in a variety of ultra-high temperature. Low temperature cyclic alternating, strong corrosion and strong radiation to maintain its excellent sealing performance under various extreme harsh conditions.
TECHNICAL INFORMATION
Folding temperature
Graphite metal wound gasket using temperature-200-850 ° C
Asbestos metal wound gasket using temperature-200-500 ° C
Teflon metal wound gasket using temperature-200-260 ° C
Note
When ordering the winding pad to provide the supplier with specific standards, materials, nominal size, pressure level, or
specify the specific size. Size: D1XD2XD3XD4
specify the specific size. Size: D1XD2XD3XD4
The commonly used product standards
. HG20610 European system of Ministry of Chemical Industry
· HG20631 The inter-n System of the Ministry of Chemical Industry
· GB/T4622.2 national standard
· JB/T4719 Mechanical Standard
· SH3407 petrochemical enterprise
· ASME B16.20 US Standard
· Din GERMAN Standard
· JIS B2404-1999 JIS TS-1998 JAPEN standard
· BS 3381-1999 UK standard
Points to note
1. The winding part of the gasket must be between the flange sealing surface, and the width of the winding part can not be widened at will.
2. It is better not to use the basic gasket on the concave-convex flange, because the basic gasket in the flange axial
compression force, gasket inner ring solder joints easy to open, resulting in gasket failure.
compression force, gasket inner ring solder joints easy to open, resulting in gasket failure.
3. Under the bad working conditions such as high temperature, cold or frequent alternation of cold and heat, large vibration and strong corrosion medium, the gaskets for flat flanges and convex flanges should be fitted with inner rings of reasonable materials.
4. Never replace high-quality gaskets with low-quality ones. Avoid material corrosion or other causes of gasket failure..
Purchase options
1. Choose Gasket according to working condition and type of flange sealing surface.
2. Choose the products of the manufacturing enterprise with sound quality management system and effective operation, preferably those with special equipment (pressure piping components) manufacturing license and valid type test report.
3. Compressibility, resilience and sealing performance are important performance indexes of seal gaskets. Generally speaking, the higher the resilience is, the better it is, the test value for the compression ratio is also better. Should choose the product with good sealing performance, moderate compression ratio and maximum rebound rate.
4, gasket body surface does not allow to affect the sealing performance of the scars, gaps, uneven and rust spot defects. The non-metal belt on the surface of gasket body should be even, appropriately higher than the metal belt, the layer texture should be clear, but the metal belt can not be exposed. The solder joint spacing of the metal winding gasket should be
uniform, there should be no defects such as non-fusion or over-melting. There should be no Burr, bump or rust on the surface of the reinforcing ring. The space between the upper and lower sealing surfaces of the gasket and the upper and lower surfaces of the reinforcing ring should be equal The outer reinforcing ring and the gasket main body should maintain the localization and may loosen appropriately.
uniform, there should be no defects such as non-fusion or over-melting. There should be no Burr, bump or rust on the surface of the reinforcing ring. The space between the upper and lower sealing surfaces of the gasket and the upper and lower surfaces of the reinforcing ring should be equal The outer reinforcing ring and the gasket main body should maintain the localization and may loosen appropriately.
Company Profile
Hejian Jiuling international commercial trading company founded in 2024, is a foreign trade enterprise of import and export trade jointly founded by some manufacturers. The main projects are: building materials (including glass fiber mesh cloth, insulation nails, Angle steel, and various thermal insulation building materials). Sealing products (stainless steel sealing products, graphite sealing products, PTFE sealing products, etc.) and a variety of communication cables, hardware products, glass products and plastic products import and export business, at present, the company's trade scale continues to expand,our products are saled around the world,and with a good reputation to win the trust of domestic and foreign customers, we provide customers with a large number of high-quality and low prices products.Work with win-win cooperation as the goal. We sincerely hope: you and I go hand in hand to build a better cooperation!
Packing & Delivery
To better ensure the safety of your goods, professional, environmentally friendly, convenient and efficient packaging services will be provided.
Selling Units: | Single item |
Single package size: | 100X100X100 cm |
Single gross weight: | 1.000 kg |
FAQ
1. who are we?
We are based in Hebei, China, start from 2020.Supported by several factories。
2. how can we guarantee quality?
Always final Inspection before shipment;
3.what can you buy from us?
Spiral Wound Gaskets,Ring Joint Gasket,Lens Gasket,Kammprofile Gasket,Graphite Gasketasbestos sheet, graphite sheet ,ptfe sheet
etc.
4.what is the moq?
50 pieces
5.Do you supply customization?
Yes, we offer customization as per your requirment.
6.Do you have a discount ?
Depend on amount
7. how soon you will deliver goods?
generally it is 3-7 days but depend on quantities.
8.Do you support packaging customization?
if you order large amount,we would like to offer.
We are based in Hebei, China, start from 2020.Supported by several factories。
2. how can we guarantee quality?
Always final Inspection before shipment;
3.what can you buy from us?
Spiral Wound Gaskets,Ring Joint Gasket,Lens Gasket,Kammprofile Gasket,Graphite Gasketasbestos sheet, graphite sheet ,ptfe sheet
etc.
4.what is the moq?
50 pieces
5.Do you supply customization?
Yes, we offer customization as per your requirment.
6.Do you have a discount ?
Depend on amount
7. how soon you will deliver goods?
generally it is 3-7 days but depend on quantities.
8.Do you support packaging customization?
if you order large amount,we would like to offer.
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