Spiral Wound Gaskets

Spiral wound gaskets have proven themselves to be the most reliable sealing element in difficult, critical and arduous situations. Spiral wound gaskets are used in refinery, petrochemical, chemical, steam lines and process industries where they have many advantages over older types of gaskets.

These gaskets are manufactured to international specifications such as BS, API, ASME, DIN, or to the customers specification.

We also have substantial resources for producing precision-machined components.

CROSS SECTION AND CONSTRUCTION

Available in several standard shapes:-

1. SWR
Spiral wound gasket without centring ring.

2. SCD
Spiral wound gasket with centering device.

3. SOR
Spiral wound gasket with centring ring. (centring ring made of carbon steel, stainless steel and other metals).

4. SIO
Spiral wound gasket with inner and outer rings. (Rings are made of carbon steel, stainless steel and other metals).

5. SIOH
Spiral wound gasket with outer ring supplied with bolt holes and inner rings.

6. SIR
Spiral wound metallic gasket with inner rings. (rings generally of Stainless steel).

7. W - Type
Spiral wound metallic gasket 'W' type.

8. Inverted W
Spiral wound metallic gasket 'Inverted W' type.

FLANGE STANDARDS

FLANGE STANDARDS Spiraget^® SOR, SIO, SIOH, SIR type spiral wound gaskets can be manufactured in accordance with all the relevant gasket standards and specifications to suit the following flange designations:

ASME/ANSIB16.5	MSS SP44 (ASME B16.47 SERIES A) (AWWA)
BS 1560, BS10, BS4504	DIN FLANGES, JIS FLANGES
API 605 (ASME B16.47 SERIES B)	FRENCH NF STANDARD

COMMON FILLERS USED ARE

FILLERS MATERIALS	MAX. WORKING TEMPERATURE
Graphite Mica	350 °F (Temperature)
Graphite 99.8% purity	1200 °C
Non asbestos	550 °C
PTFE	250 °C
Ceramic	1000 °C

INNER AND OUTER RING

Carbon Steel, Stainless Steel 304,304L, 316,316L,316Ti,321,347, MONEL^® 400,Inconel^® 600,625,800, Incoloy^® 800, 825, Nickel 200, Titanium, Hastelloy, Copper

SPIRAL WOUND GASKET SIZES

Size & shape can be produced as per prevailing international standards or in accordance with customer requirements.

GASKET COMPRESSION & CHOICE OF THICKNESS

Nom. Thickness	Compressed Thickness
2.5 mm(.098 in)	1.9/2.1mm(.075/.085 in)
3.2 mm(.125 in)	2.4/2.6mm(.095/.105 in)
4.5 mm(.175 in)	3.2/3.45mm(.125/.135 in)
6.4 mm(.250 in)	4.6/4.8mm(.180/.190 in)
7.3 mm(.285 in)	4.7/4.9mm(.185/.195 in)