Products
Products

Spiral wound gasket

With the inner metal winding gasket

Inner ring generally adopt and steel tape of the same material as to meet the requirements of pipeline corrosion medium is usually better than that of a pipe or flange material, according to the standard requirements to carry metal winding is fixed on the inner ring and with metal winding belt with graphite, asbestos, ptfe, non asbestos etc. Nonmetal overlapping spiral wound coil alternates with continuously, at the end of the metal belt fixed in spot welding way.The inner ring and reinforcement ring to avoid winding gasket ring.
Characteristics: the inner metal winding gasket using the control of the inner ring gasket to get maximum compaction degree, winding gasket contact with the surface of the flange sealing surface accuracy is not high.Metal winding gasket uneven, especially suitable for the load force is easy to loose, periodic changes in temperature and pressure, impact or vibration.As used in low pressure in the grooved surface and plane or concave and convex surface of the flange
Use equipment: petroleum, chemical industry, metallurgy, electric power, shipbuilding, machinery industries such as pipelines, valves, pressure vessels, condenser, heat exchanger, tower, manhole, hand hole flange joint sealing, etc.


Winding gasket structure and symbol and use the flange type:

The basic pattern
Code name Applicable flange sealing surface Thickness (mm)
The basic body V/ring The basic body W/ring
basic Type A or R Grooved surface, concave and convex surface, plane and the surface of the groove 3.2;4.5 4.8;5.5;7.5
Take inner ring type Type B or rirs Grooved surface, concave and convex surface, plane and the surface of the groove 3.2/2
4.5/3
4.8/3.0
5.5/4.0
7.5/5.0
With outer ring Type C or CG Flat or convex
With the inner ring and outer ring Type D or CGI Flat or convex


Material:


1. The inner metal winding gasket metal belt
A. the thickness from 0.15 mm to 0.15 mm, sus304, sus316L, sus321 cold rolled steel belt, or be determined by supply and demand both sides talks things over.
B. metal belt for preforming V or W narrowband, surface should be smooth. Clean, should not have rough. Crack. Scratch. Pits, rusty spot defects, etc
C. the HV hardness value of stainless steel 200 or less

2. The inner metal winding gasket nonmetallic belt
A nonmetallic filling for special asbestos tape, flexible graphite belt, teflon belt, non asbestos fiber tape, and mica tape, etc.With the thickness of 0.3 1.0 mm.
B. special asbestos ignition loss must be 25% or less
C. take the chloride ion content of 100 PPM or less, not of metal
D. all kinds of media and various kinds of nonmetal with recommended temperature and pressure

Winding gasket various non-metallic materials main technical parameters:

material Identification code Temperature ℃ The maximum working pressure Applicable medium Compression ratio % Resilient rate % The stress relaxation rate %
Expanded graphite F.G.

- 220-550
250 BAR Corrosive medium
18-30
P 17 18 or less
Special asbestos tape ASB
- 150-450 100 BAR
Like the air tightness 18-30 P 19 28 or less
teflon PTFE - 200-250 100 BAR Corrosive medium 18-30 15 or more 13 or less
No asbestos material NAF
- 100-350 100 BAR General air tightness 18-30 P 19 28 or less
Cloud mother MICA
- 150-800 100 BAR High temperature, 18-30 P 19
Tao porcelain CER
- 200-1090 100 BAR Ultra high temperature 18 to 40 P 19


The table below for the inner ring and winding metal material selection:

The name of the material
Abbreviations tag Hardness (HB) Temperature (° C)
SUS 304 304 130 ~ 180 - 195 ~ + 550
SUS 316L 316L 130 ~ 180 - 100 ~ + 550
SUS 321 321 130 ~ 190 - 195 ~ + 760
HASTELLOR-B2 HASTB 215
- 185 ~ + 1090
INCONEL-600 INC600 150 - 100 ~ + 1090
MONEL-400 MON 150
- 130 ~ + 820
titanium TI 215
- 195 ~ + 1090


Basic body winding gasket thickness tolerance:

project
Thickness (mm) Tolerance (mm)
The thickness of the gasket 4.5, 3.2 + 0.2
0.1
The thickness of the ring 3.0 + / - 0.25

Winding gasket diameter tolerances are listed in the table below (that is, the nominal pipe diameter for flange) :


DIN (mm) ANSI B16.5
BS1560 (mm)
Mss sp-44
API 605 The tolerance
The inner diameter
Gasket inside diameter
< = 600 < = 24" >=26" and <=34" + / - 0.5
>600 and <=800 >24" and <=34" >=36" and <=60" + / - 0.9
>800 and <=1600 >34" and <=60" + / - 1.3
> 1600 > 60" + / - 1.6
Gasket diameter < = 600 < = 24" < = 24" + / - 0.9
>600 and <=16000 >24" and <=60" >24" and <=60" + / - 1.8
1600 > 60" + / - 2.2
Outer diameter >=1/2" and <=60" + / - 0.9
< = 600 < = 24" 0-1.0
>600 and <=1000 >24" and <=34" 0-1.8
>1000 and <=1600" >34" and <=60 0-2.2


Commonly used metal graphite winding gasket main performance parameters:

Winding gasket coefficient
m=2.5-4
Winding gasket using pressure ≤25MPa
Use temperature winding gasket - 196 ℃ to 700 ℃ (oxidizing medium is not higher than 600 ℃)
Winding pads than the minimum preload pressure y=68MPa


Technical standards:


1. Metal winding gasket foreign manufacturing standards are: ASME B 16.20, ASME B 16.5, ASME B 16.47 A (B), EN1092 BS, JIS, and NF, etc
2. Domestic standards have HG20610-2009 steel pipe flanges with spiral wound gasket Chemical system in Europe
HG20631-2009 steel pipe flanges with spiral wound gasket Chemical system of America
GB/T4622.2-97 spiral wound gasket Tube flange with national standard gasket size
JB/T4719-92 tube and shell heat exchanger with winding gasket The mechanical standard
JB/T90-94 pipe flange with spiral wound gasket The mechanical standard
JB/T4705-2000 pressure vessel flange with spiral wound gasket The mechanical standard, etc., client ask more standards or requirements, please contact us.

With outer metal winding gasket

Outside of the basic metal winding gasket for a metal outer ring flange and gasket between the registration and control of gasket compression force, outer ring also called for the central district, foreign generally USES galvanized or coating of carbon steel material or use a pipe or flange is the same

Performance characteristics:Due to the existence of the outer ring of the, so the tear open outfit is convenient, and outer ring is used to control the maximum compaction degree, with outer ring winding gasket compression performance, can good resilience, multichannel and certain self-tightening sealing function, less sensitive to surface defects on the surface of the flange clamp, non-caking flange sealing surface, can partly eliminate pressure. The temperature change and the influence of mechanical vibration;In high temperature, low temperature. High vacuum. Impact vibration cycle alternating all kinds of harsh conditions, such as maintain its excellent sealing performance.With outer metal winding gasket is generally used in low pressure in the plane and the convex flange.

Use of equipment:Petroleum, chemical industry, metallurgy, electric power, shipbuilding, machinery industries such as pipelines, valves, pressure vessels, condenser, heat exchanger, tower, manhole, hand hole flange joint sealing, etc.

Winding gasket structure and symbol and use the flange type:

The basic pattern
Code name Applicable flange sealing surface Thickness (mm)
The basic body V/ring The basic body W/ring
basic Type A or R Grooved surface, concave and convex surface, plane and the surface of the groove 3.2;4.5 4.8;5.5;7.5
Take inner ring type Type B or rirs Grooved surface, concave and convex surface, plane and the surface of the groove 3.2/2
4.5/3
4.8/3.0
5.5/4.0
7.5/5.0
Zone locating ring type Type C or CG Flat or convex
With the inner ring and locating ring Type D or CGI Flat or convex


Material:

1. The outer ring of metal winding gasket metal belt
A. the thickness from 0.15 mm to 0.15 mm, sus304, sus316L, sus321 cold rolled steel belt, or be determined by supply and demand both sides talks things over.
B. metal belt for preforming V or W narrowband, surface should be smooth. Clean, should not have rough. Crack. Scratch. Pits, rusty spot defects, etc
C. the HV hardness value of stainless steel 200 or less

2. The outer ring of metal winding gasket nonmetallic belt
A nonmetallic filling for special asbestos tape, flexible graphite belt, teflon belt, non asbestos fiber tape, and mica tape, etc.With the thickness of 0.3 1.0 mm.
B. special asbestos ignition loss must be 25% or less
C. take the chloride ion content of 100 PPM or less, not of metal
D. all kinds of media and various kinds of nonmetal with recommended temperature and pressure

Winding gasket various non-metallic materials main technical parameters:

material Identification code Temperature ℃ The maximum working pressure Applicable medium Compression ratio % Resilient rate % The stress relaxation rate %
Expanded graphite F.G.
- 220-550 250 BAR Corrosive medium
18-30
P 17 18 or less
Special asbestos tape ASB
- 150-450 100 BAR
Like the air tightness 18-30 P 19 28 or less
teflon PTFE - 200-200 100 BAR Corrosive medium 18-30 15 or more 13 or less
No asbestos material NA
- 100-350 100 BAR General air tightness 18-30 P 19 28 or less
Cloud mother MICA
- 150-800 100 BAR High temperature, 18-30 P 19
Tao porcelain CER
- 200-1090 100 BAR Ultra high temperature 18 to 40 P 19


The table below for the common outer ring and the winding metal material selection:

The name of the material
Abbreviations tag Hardness (HB) Temperature (° C)
Carbon steel (Carbon steel) CS 120 - 40 ~ + 540
SUS 304 304 130 ~ 180 - 195 ~ + 550
SUS 316L 316L 130 ~ 180 - 100 ~ + 550
SUS 321 321 130 ~ 190 - 195 ~ + 760
HASTELLOR-B2 HASTB 215
- 185 ~ + 1090
INCONEL-600 INC600 150 - 100 ~ + 1090
MONEL-400 MON 150
- 130 ~ + 820
titanium TI 215
- 195 ~ + 1090


Does outer ring is made of carbon steel as outer ring need galvanizing or plastic spraying antirust processing

Basic body winding gasket thickness tolerance:

project
Thickness (mm) Tolerance (mm)
The thickness of the gasket 4.5, 3.2 + 0.2
0.1
The thickness of the ring 3.0 + / - 0.25


Winding gasket diameter tolerances are listed in the table below (that is, the nominal pipe diameter for flange) :


DIN (mm) ANSI B16.5
BS1560 (mm)
Mss sp-44
API 605 The tolerance
The inner diameter
Gasket inside diameter
< = 600 < = 24" >=26" and <=34" + / - 0.5
>600 and <=800 >24" and <=34" >=36" and <=60" + / - 0.9
>800 and <=1600 >34" and <=60" + / - 1.3
> 1600 > 60" + / - 1.6
Gasket diameter < = 600 < = 24" < = 24" + / - 0.9
>600 and <=16000 >24" and <=60" >24" and <=60" + / - 1.8
1600 > 60" + / - 2.2
Outer diameter >=1/2" and <=60" + / - 0.9
< = 600 < = 24" 0-1.0
>600 and <=1000 >24" and <=34" 0-1.8
>1000 and <=1600" >34" and <=60 0-2.2


Commonly used metal graphite winding gasket main performance parameters:

Winding gasket coefficient
m=2.5-4
Winding gasket using pressure ≤25MPa
Use temperature winding gasket - 196 ℃ to 700 ℃ (oxidizing medium is not higher than 600 ℃)
Winding pads than the minimum preload pressure y=68MPa


Technical standards:

1. Metal winding gasket foreign manufacturing standards are: ASME B 16.20, ASME B 16.5, ASME B 16.47 A (B), EN1092 BS, JIS, and NF, etc

Technical standards:

1. Metal winding gasket foreign manufacturing standards are: ASME B 16.20, ASME B 16.5, ASME B 16.47 A (B), EN1092 BS, JIS, and NF, etc
2. Domestic standards have HG20610-2009 steel pipe flanges with spiral wound gasket Chemical system in Europe
HG20631-2009 steel pipe flanges with spiral wound gasket Chemical system of America
GB/T4622.2-97 spiral wound gasket Tube flange with national standard gasket size
JB/T4719-92 tube and shell heat exchanger with winding gasket The mechanical standard
JB/T90-94 pipe flange with spiral wound gasket The mechanical standard
JB/T4705-2000 pressure vessel flange with spiral wound gasket The mechanical standard and so on, more standards or requirements, please inquire

With metal winding gasket rings

Currently the most widely used a sealing gasket, metal for half resilience in the best gasket, sealing gasket by V or W form steelskin alternating with various filling material winding.By changing the gasket material combination, can solve the problem of all kinds of medium to chemical corrosion of gasket.In order to strengthen body and accurate positioning using metal reinforcement ring inside and outside the locating ring form, inner and outer ring is used to control the maximum compaction degree have the effect of strengthening basic body and avoid loose circle, because the existence of the outer ring gasket is more convenient to install and is generally used in low pressure in the plane and the convex flange.

Inside and outside the ring winding gasket performance characteristics:Ability under high temperature, high pressure and adapt to the temperature or vacuum conditions, the gasket contact with the surface of the flange sealing surface accuracy is not high, tear open outfit is convenient

Winding pads used equipment:Petroleum, chemical industry, metallurgy, electric power, shipbuilding, machinery industries such as pipelines, valves, pressure vessels, condenser, heat exchanger, tower, manhole, hand hole flange joint sealing, etc.

Winding gasket structure and symbol and use the flange type:

The basic pattern
Code name Applicable flange sealing surface Thickness (mm)
The basic body V/ring The basic body W/ring
basic Type A or R Grooved surface, concave and convex surface, plane and the surface of the groove 3.2;4.5 4.8;5.5;7.5
Take inner ring type Type B or rirs Grooved surface, concave and convex surface, plane and the surface of the groove 3.2/2
4.5/3
4.8/3.0
5.5/4.0
7.5/5.0
With outer ring Type C or CG Flat or convex
With the inner ring and outer ring Type D or CGI Flat or convex


Material:

1. The inner and outer ring winding pad metal belt
A. the thickness from 0.15 mm to 0.15 mm, sus304, sus316L, sus321 cold rolled steel belt, or be determined by supply and demand both sides talks things over.
B. metal belt for preforming V or W narrowband, surface should be smooth. Clean, should not have rough. Crack. Scratch. Pits, rusty spot defects, etc
C. the HV hardness value of stainless steel 200 or less

2. The belt winding gasket rings nonmetallic belt
A nonmetallic filling for special asbestos tape, flexible graphite belt, teflon belt, non asbestos fiber tape, and mica tape, etc.With the thickness of 0.3 1.0 mm.
B. special asbestos ignition loss must be 25% or less
C. take the chloride ion content of 100 PPM or less, not of metal
D. all kinds of media and various kinds of nonmetal with recommended temperature and pressure

Inside and outside the ring winding gasket various non-metallic materials main technical parameters:

material logo
Code name
Temperature ℃ The biggest
Pressure of work
Applicable medium Compression ratio % Resilient rate % The stress relaxation rate %
Expanded graphite F.G.
- 220-550 250 BAR Corrosive medium
18-30
P 17 18 or less
Special asbestos tape ASB
- 150-450 100 BAR
Like the air tightness 18-30 P 19 28 or less
teflon PTFE - 200-200 100 BAR Corrosive medium 18-30 15 or more 13 or less
No asbestos material NA
- 100-350 100 BAR General air tightness 18-30 P 19 28 or less
Cloud mother MICA
- 150-800 100 BAR High temperature, 18-30 P 19
Tao porcelain CER
- 200-1090 100 BAR Ultra high temperature 18 to 40 P 19


The table below for choice between inner and outer ring and winding metal materials commonly used:

The name of the material
Abbreviations tag Hardness (HB) Temperature (° C)
Carbon steel (Carbon steel) CS 120 - 40 ~ + 540
SUS 304 304 130 ~ 180 - 195 ~ + 550
SUS 316L 316L 130 ~ 180 - 100 ~ + 550
SUS 321 321 130 ~ 190 - 195 ~ + 760
HASTELLOR-B2 HASTB 215
- 185 ~ + 1090
INCONEL-600 INC600 150 - 100 ~ + 1090
MONEL-400 MON 150
- 130 ~ + 820
titanium TI 215
- 195 ~ + 1090


Does outer ring is made of carbon steel as outer ring need galvanizing or plastic spraying antirust processing

The basic body metal winding gasket thickness tolerance:

project
Thickness (mm) Tolerance (mm)
The thickness of the gasket 4.5, 3.2 + 0.2
0.1
The thickness of the ring 3.0 + / - 0.25

With metal winding gasket rings are listed in the table below the diameter tolerance (that is, the nominal pipe diameter for flange) :


DIN (mm) ANSI B16.5
BS1560 (mm)
Mss sp-44
API 605 The tolerance
The inner diameter
Gasket inside diameter
< = 600 < = 24" >=26" and <=34" + / - 0.5
>600 and <=800 >24" and <=34" >=36" and <=60" + / - 0.9
>800 and <=1600 >34" and <=60" + / - 1.3
> 1600 > 60" + / - 1.6
Gasket diameter < = 600 < = 24" < = 24" + / - 0.9
>600 and <=16000 >24" and <=60" >24" and <=60" + / - 1.8
1600 > 60" + / - 2.2
Outer diameter >=1/2" and <=60" + / - 0.9
< = 600 < = 24" 0-1.0
>600 and <=1000 >24" and <=34" 0-1.8
>1000 and <=1600" >34" and <=60 0-2.2

Commonly used metal graphite winding gasket main performance parameters:

Winding gasket coefficient
m=2.5-4
Winding gasket using pressure ≤25MPa
Use temperature winding gasket - 196 ℃ to 700 ℃ (oxidizing medium is not higher than 600 ℃)
Winding pads than the minimum preload pressure y=68MPa


Technical standards:

1. Metal winding gasket foreign manufacturing standards are: ASME B 16.20, ASME B 16.5, ASME B 16.47 A (B), EN1092 BS, JIS, and NF, etc

Technical standards:

1. Metal winding gasket foreign manufacturing standards are: ASME B 16.20, ASME B 16.5, ASME B 16.47 A (B), EN1092 BS, JIS, and NF, etc
2. The national standard
HG20610-2009 steel pipe flanges with spiral wound gasket Chemical system in Europe
HG20631-2009 steel pipe flanges with spiral wound gasket Chemical system of America
GB/T4622.2-97 spiral wound gasket Tube flange with national standard gasket size
JB/T4719-92 tube and shell heat exchanger with winding gasket The mechanical standard
JB/T90-94 pipe flange with spiral wound gasket The mechanical standard
JB/T4705-2000 pressure vessel flange with spiral wound gasket The mechanical standard
SH3407-96 flange with spiral wound gasket
More standards or requirements, please inquire
Does the actual application condition is complex, the above parameters are for reference only do not make any guarantee is requested.

Copyright © 2014 Zhenghai sealing

National toll free hotline:+86-577-86890707

×