Spiral Wound Gaskets

Specification of Spiral Wound Metallic Gaskets

Stainless Steel Spiral Wound Gaskets : SS 304 / 304L / 316 / 316L / 321 / 347 / 904L

High Nickel Spiral Wound Gaskets : MONEL 400 / K500 / INCONEL 600 / 625 / 800 / 825

Spiral Wound Gasket Dimensions

Spiral Wound Gasket

Class 150 NPS 1/2-24
NPS Inner Ring Sealing Element Outer Ring
d1 d2 d3 d4
1/2 14.2 19.1 31.8 47.8
3/4 20.6 25.4 39.6 57.2
1 26.9 31.8 47.8 66.8
1.1/4 38.1 47.8 60.5 76.2
1.1/2 44.5 54.1 69.9 85.9
2 55.6 69.9 85.9 104.9
2.1/2 66.5 82.6 98.6 124
3 81 101.6 120.7 136.7
4 106.4 127 149.4 174.8
5 131.8 155.7 177.8 196.9
6 157.2 182.6 209.6 222.3
8 215.9 233.4 263.7 279.4
10 268.2 287.3 317.5 339.9
12 317.5 339.9 374.7 409.7
14 349.3 371.6 406.4 450.9
16 400.1 422.4 463.6 514.4
18 449.3 474.7 527.1 549.4
20 500.1 525.5 577.9 606.6
24 603.3 628.7 685.8 717.6
NPS d1 d2 d3 d4
Inner Ring Sealing Element Outer Ring

Spiral Wound Gasket Compression

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)

Available Spiral Wound Gasket Shapes

SWR Spiral Wound Metaillic Gasket without centering ring
SCD Spiral Wound Metallic Gasket with centering device
SOR Spiral Wound Metallic Gasket with centering ring. (Centering ring made of carbon steel stainless steel and other metals)
SIO Spiral Wound Metallic Gasket with inner & outer rings.  (Rings are made of carbon steel stainless steel and other metals)
SIOH Spiral Wound Metallic Gasket with outer ring supplied with bolt holes and inner rings
SIR Spiral Wound Metallic Gasket with inner rings. (Rings generally of stainless steel)