China Manufacturer of EN 1514-2 Spiral Wound Gasket

What is Spiral Wound Gasket ?

SWG, The spiral wound gasket is semi-metallic, comprising of a spirally wound v-shaped stainless steel strip and a non-metallic filler material, such as graphite or PTFE. Also on the gasket, is a solid outer ring used for centering and controlling compression.

According to the need of the mating flange, the gasket is provided with an outer ring, an inner ring or both outer and inner rings. The outer ring serves as a compression stop, anti-blowout device, which properly centers the gasket on the flange. The inner ring acts as a compression stop and is used to fill the annular space between the flange bores and the gasket inside diameter to minimize trubulence of process fluids and erosion of flanges faces. The spiral wound outer or inner rings are used primarily as reinforcement and are chosen instead of a solid metal ring, because of lower costs or because of limited space when the use of a solid metal ring would be prohibited due to the difficulty in fabrication or usage.

Spiral Wound Gasket Types

The standard spiral wound gasket can be categorized in four styles: reinforce (Style R), inner ring with reinforce (Style RIR), centering gasket (Style CG), centering gasket with inner ring (Style CGI)

1)Style R
Style R is the basic type of spiral wound gasket. Style R’s inner diameter and outer diameter has a few laps metal strips that do not fill the fillers. They maintain the compression and sealing. The Style R spiral wound gasket is normally used for tongue and groove, male and female type joint of flanges.
2)Style RIR
The inner ring is between the bore diameter and the inner diameter of the gasket. It is designed to prevent accumulation of solids, reduce turbulent flow of process fluids and minimize erosion at flange faces. It’s used for male and female flanges.
3)Style CG
The centering ring accurately make the spiral ring on flange face. It provides an extra radial strength to protect the spiral ring. Style CG gaskets are suitable for flat face flange and raised face flange.
4)Style CGI
The style CGI spiral wound gasket is combined the advantages of centering ring and inner ring. Suitable for high temperature and high pressure. It can be used for above Class 900, corrosive medium or other harsh working conditions.
Spiral wound gaskets also have some other special types gasket,  like style HE, style 625 and etc. It can be used in special application.

EN 1514-2

Gaskets for PN-designated flanges – Part 2: Spiral wound gaskets for use with steel flanges
EN 1514-2 gasket is used for EN1092-1 Flanges
EN 1514-2 specifies the dimensions and marking of spiral wound gaskets for use in conjunction with flat face and raised face flanges complying with the requirements of EN 1092-1 for PN 10, PN 16, PN 25, PN 40, PN 63, PN 100 and PN 160 and up to and including
DN 1 000.

Dimension of EN 1514-2 Spiral Wound Gasket

to be used with Flanges acc. to DIN EN 1092-1

Spiral Wound Gasket EN 1514-2

DN ID (d1) ID (d2) OD (d3)
PN
10-320		 PN
10-320		 PN
10-40		 PN
64-320
10 18 24 36 36
15 22 28 40 40
20 27 33 47 47
25 34 40 54 54
32 43 49 6 6
40 48 54 70 70
50 57 66 84 84
65 73 82 102 104
80 86 95 115 119
100 108 120 140 144
125 134 146 168 172
150 162 174 196 200
175 183 19 221 227
200 213 225 251 257
250 267 279 307 31
300 318 330 358 366
350 363 37 40 413
400 414 426 458 466
450 460 478 526 551
500 518 530 566 574
600 618 630 666 674
700 718 730 770 778
800 818 830 874 882
900 910 930 974 982
1000 1010 1030 1078 1086
1200 1210 1230 1280 1290
1400 1420 1450 1510
1600 1630 1660 1720
1800 1830 1860 1920
2000 2020 2050 2120
2200 2230 2260 2330
2400 2430 2480 2530
2600 2630 2660 2730
2800 2830 2860 2930
3000 3030 3060 3130

 

EN 1514-2 Spiral Wound Gasket Materials

The material construction of a spiral wound gasket is based upon the required operating conditions, typically temperature, pressure and substance. For example, a typical standard spiral wound gasket could be made up of a 316 Stainless Steel inner ring and winding with a graphite filler, and a carbon steel outer ring.

To allow for various chemical compatibilities and pressure/temperature requirements, a selection of filler materials are available, including graphite, PTFE, Non-asbestos and Mica.

Filler Materials

Filler Materials Temperature Range Max PSI/BAR PN Range Colour Coding
Graphite min -200 max 550 °C 250 bar 10- 320 Grey Stripe
PTFE min – 200 max 250 °C 100 bar 10- 320 White Stripe
Nonas min – 100 max 250 °C 100 bar 10-320 Pink Stripe
Mica min -200 max 1000 °C 100 bar 10-320 Light Green Stripe

Spiral Winding Materials

Winding Materials Temperature Range Max PSI/BAR PN Range Colour Coding
304 Stainless Steel min-250 max 550 °C 650°C 10-320 Yellow
316L Stainless Steel min – 100 max 550 °C 800°C 10-320 Green
347 Stainless Steel min -250 max 550 °C 870°C 10-320 N/A
321 Stainless Steel min-250 max 550 °C 870°C 10-320 N/A
Monel 400 min -125 max 600 °C 800°C 10-320 Orange
Nickel 200 min – 250 max 600 °C 600°C 10-320 Red
Titanium min – 250 max 350 °C 450°C 10-320 Purple
Hastelloy B-2 min – 200 max 450 °C 500°C 10-320 Brown
Hastelloy C-276 min -200 max 450 °C 450°C 10-320 Beige
Inconel 600 min – 100 max 950 °C 1000°C 10-320 Gold
Incoloy 825 min -100 max 450 °C 450°C 10-320 Gold

Applications of EN 1514-2 Gasket

  • Oil & Gas Industry: Pipelines, valves, and equipment flanges.
  • Petrochemical Plants: Sealing in high-temperature reactors.
  • Power Generation: Steam turbines and heat exchangers.
  • Chemical Industry: Sealing chemical transport systems.

EN 1514-2 Spiral Wound Gasket Order specification.

Spiral Wound Gasket CGI Style to suit DIN Flanges PN16 Materials: SS304+Graphite, Inner Ring: SS304; Outer Ring: Carbon Steel

Spiral Wound Gasket CGI Style for EN 1092-1 Flanges PN16 Materials: SS316 filler Graphite, Inner Ring: SS316; Outer Ring: Carbon Steel

Spiral Wound Gaskets are widely used sealing components designed for high-pressure and high-temperature applications. These gaskets comply with EN 1514-2, which specifies dimensions and tolerances for gaskets intended for use with flanges complying with EN 1092-1 (steel flanges).