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Cixi City,Zhejiang,China 315300
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Metallic The SWG is composed of a variety of optional metal winding belt and sealed filler with good compression properties. This mature sealing structure provides good compressive and resilience with excellent sealing properties. The principle of precision preformed metal winding strip is similar to the spring, which produces compression under load pressure and then produces very high resilience, so it can maintain good sealing performance when working conditions change. According to different working conditions, the corresponding metal winding belt and sealing filler can be selected, so as to seal a very wide range of working conditions. The characteristics of DONHONSIL (SWG) are to ensure the precision tolerances of various types in manufacturing. Compared with the traditional spiral wound gasket, DONHONSIL (SWG) can achieve good sealing under lower stress (bolt load). DONHONSIL (SWG) can be produced in accordance with various international standards and industry standards, such as ASME B16.20, DIN, BS, JIS, GB, HG standards and so on. The quality assurance system complies with the ISO 9001 standard.
DONHONSIL (SWG) compared with the conventional low stress winding gasket and high temperature gasket, the initial sealing is achieved. DONHONSIL (SWG) advanced production technology and strict engineering Standards.
Ensure the precise manufacturing tolerance and excellent quality stability of each piece of DONHONSIL (SWG).
Gasket Type
| Type R | 1,R type, metal winding filler is made of high performance precision Type metal winding belt and filler winding composition. 2,Apply to groove and MFM flanges. |
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| Type RI | 1,RI type, metal winding filler is made of high performance precision Type metal winding belt and filler winding composition with inner ring. 2,Apply to groove and MFM flanges. |
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| Type OR | 1,The winding seal external center ring enhances the strength and stability of the gasket and controls the compression amount. 2,Apply to standard RF and flat flanges. |
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| Type ORI | 1,The center ring and the inner ring are installed in the winding seal to improve the radial strength of the gasket, and the protective winding seal is eroded by the medium and the winding belt is loose inward. 2,Apply to standard RF and flat flanges. |
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SWG Color Coding and Abbreviation
Metal Type | ||||
Material | Minimum | Maximum |
Abbreviation | Center Ring Color Code |
℉ ℃ | ℉ ℃ | |||
304 Stainless Steel |
-320 -195 |
1400 760 |
304 |
Yellow |
316L Stainless Steel |
-150 -100 |
1400 760 |
316L |
Green |
317L Stainless Steel |
-150 -100 |
1400 760 |
317L |
Maroon |
321 Stainless Steel |
-320 -195 |
1400 760 |
321 |
Turquoise |
347 Stainless Steel |
-320 195 |
1700 925 |
347 |
Blue |
Carbon Steel |
-40 -40 |
1000 540 |
CS |
Silver |
20Cb-3 (Alloy 20) |
-300 -185 |
1400 760 |
A-20 |
Black |
HASTELLOY B |
-300 -185 |
2000 1090 |
HAST B |
Brown |
HASTELLOY C276 |
-300 -185 |
2000 1090 |
HAST C |
Beige |
INCOLOY 800 |
-150 -100 |
1600 870 |
IN 800 |
White |
INCOLOY 825 |
-150 -100 |
1600 870 |
IN 825 |
White |
INCOLOY 600 |
-150 -100 |
2000 1090 |
IN 600 |
Gold |
INCOLOY 625 |
-150 -100 |
2000 1090 |
IN 625 |
Gold |
MONEL400 |
-200 -130 |
1500 820 |
MON |
Orange |
Nickel 200 |
-320 -195 |
1400 760 |
NI |
Red |
Titanium |
-320 -195 |
2000 1090 |
TI |
Purple |
Filler Material | Color Code | |||
Material | Minimum | Maximum | Abbreviation | |
℉℃ | ℉℃ | |||
Ceramic Fiber | -350 -212 | 2000 1090 | CER | Light Green |
Graphite | -350 -212 | 950510 | FG | Gray |
PTFE | -400 -240 | 500260 | PTFE | White |
Mica Graphite | -350 -212 | 1400 760 | MICA-GRA | Pink |
Gasket Mark
Each spiral wound gasket is carefully positioned to ensure that the sealing surface is not damaged during transportation and operation.
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Reinforced Mica-Graphite
The conventional mica-graphite sealed packing is a mixture of graphite and mica, which only gently raises the temperature ceiling of the conventional flexible graphite packing.
Special mica-graphite metal winding gasket uses pure mica filler to wind around the outer and inner rings of the flexible graphite filler. This structure greatly improves the oxidation resistance of the gasket in high temperature conditions, and greatly reduces the cost of the gasket compared with other types of high temperature wound gasket.
·The pure mica surface protection graphite does not oxidize rapidly at a high temperature of 760°C (1400°F)
·Mica provides enhanced fire protection
·It can completely replace other kinds of high temperature winding gaskets in the same temperature range, and has better cost performance
Technical Data
Gasket Type Option:
The pressure is class 900 or higher shall be selected ORI type gasket. ·Select PTFE for filler The spiral wound gasket for flanges on RF and FF shall use ORI type
Available Size:
| Size: | Class rating | Standard |
| DN10~DN600 | 150#~2500# | ASME B16.20 |
| DN650~DN1500 | 150#~2500# | ASME B16.47A/B |
| DN10~DN3000 | PN10 ~PN320 | EN1514-2 |
| DN10~DN600 | 5K ~ 63K | JIS B2404 |
| 10MM ~ 3000MMDIA | 150#~2500# | NON-STANDARD |
Gasket Compression:
For optimal sealing performance, the DONHONSIL spiral wound gasket recommends the compression thickness of the table below:
Original Thickness | Compression Thickness |
0.125in(3.2mm) | 0.090/0.100in(2.3/2.5mm) |
0.175in(4.5mm) | 0.125/0.135in(3.2/3.4mm) |
0.250in(6.4mm) | 0.180/0.200in(4.6/5.1mm) |
0.285in(7.2mm) | 0.200/0.220in(5.1/5.6mm) |
