PETROCHEMICAL
SPIRAL WOUND GASKETS
Spiral wound gaskets are available in various different forms and materials all designed around the sealing element. The spiral wound sealing element consists of a metallic winding strip with layers of a softer, more compressible material. The most common type of spiral wound gasket consists of solid metal inner & outer rings and the spiral wound sealing element. The winding, filler and metal rings are available in a range of different materials which are all listed below along with the different types of spiral wound gaskets that we supply.
TYPE CRIR
TYPE CR
- Spiral wound sealing element
- Solid metal inner & outer ring
- Suitable for high pressure & temperature applications
- Raised face of flat flanges
- Prevents turbulence & erosion damage to flange
- Prevents damage to gasket bore & inner windings
- Inner ring acts as a heat shield & corrosion barrier
- General & critical duties
- Spiral wound sealing element
- Solid metal outer ring used as a centering device & compression stop
- Used mainly on raised face and flat face flanges
- General duties
TYPE RIR
TYPE CR
- Spiral wound sealing element
- Solid metal inner ring
- High pressure temperature capability
- Male to female flanges
- General & critical duties
- Spiral wound sealing element
- Suitable for high pressure/high temp applications
- Tongue & groove, male to female and flat face to recess flanges.
- General & critical duties
DIMENSIONS
Spiral Wound Gasket - Class 150 Dimensions
Spiral Wound Gasket - Class 300 Dimensions
Spiral Wound Gasket - Class 600 Dimensions
Spiral Wound Gasket - Class 900 Dimensions
MATERIALS
| Filler Material | Max Temperature | ASME B16.20 Colour Coding |
|---|---|---|
| Graphite | 550°C | Grey Stripe |
| PTFE | 260°C | White Stripe |
| Mica | 1000°C | Light Green Stripe |
| Mica and Graphite | 900°C | - |
FILLER MATERIAL
Graphite
+
Max Temperature
550°C
ASME B16.20 Colour Coding
Grey Stripe
PTFE
+
Max Temperature
260°C
ASME B16.20 Colour Coding
White Stripe
Mica
+
Max Temperature
1000°C
ASME B16.20 Colour Coding
Light Green Stripe
Mica and Graphite
+
Max Temperature
900°C
ASME B16.20 Colour Coding
-
| Winding / Inner / Outer Materials | Max Temperature | ASME B16.20 Colour Coding |
|---|---|---|
| Carbon Steel | 500°C | Silver |
| 304 Stainless Steel | 650°C | Yellow |
| 316 Stainless Steel | 800°C | Green |
| Duplex UN S31803 | 800°C | N/A |
| 347 Stainless Steel | 870°C | Blue |
| 321 Stainless Steel | 870°C | Turquoise |
| Monel 400 | 800°C | Orange |
| Nickel 200 | 600°C | Red |
| Titanium | 500°C | Purple |
| Hastelloy B-2 | 700°C | Brown |
| Hastelloy C-276 | 700°C | Beige |
| Inconel 600 | 1000°C | Gold |
| Inconel 625 | 1000°C | Gold |
| Inconel X-750 | 1000°C | N/A |
| Inconel 825 | 600°C | N/A |
| Zirconium | 500°C | N/A |
WINDING / INNER / OUTER MATERIALS
Carbon Steel+
Max Temperature500°C
ASME B16.20 Colour CodingSilver
304 Stainless Steel+
Max Temperature650°C
ASME B16.20 Colour CodingYellow
316 Stainless Steel+
Max Temperature800°C
ASME B16.20 Colour CodingGreen
Duplex UN S31803+
Max Temperature800°C
ASME B16.20 Colour CodingN/A
347 Stainless Steel+
Max Temperature870°C
ASME B16.20 Colour CodingBlue
321 Stainless Steel+
Max Temperature870°C
ASME B16.20 Colour CodingTurquoise
Monel 400+
Max Temperature800°C
ASME B16.20 Colour CodingOrange
Nickel 200+
Max Temperature600°C
ASME B16.20 Colour CodingRed
Titanium+
Max Temperature500°C
ASME B16.20 Colour CodingPurple
Hastelloy B-2+
Max Temperature700°C
ASME B16.20 Colour CodingBrown
Hastelloy C-276+
Max Temperature700°C
ASME B16.20 Colour CodingBeige
Inconel 600+
Max Temperature1000°C
ASME B16.20 Colour CodingGold
Inconel 625+
Max Temperature1000°C
ASME B16.20 Colour CodingGold
Inconel X-750+
Max Temperature1000°C
ASME B16.20 Colour CodingN/A
Inconel 825+
Max Temperature600°C
ASME B16.20 Colour CodingN/A
Zirconium+
Max Temperature500°C
ASME B16.20 Colour CodingN/A