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26 300# Series A Spiral Wound Gasket 304 Stainless Steel Inner Ring, 304 Stainless Steel Windng, Flexible Graphite Filler, Carbon Steel Outer Ring

Selected Spiral Wound Gasker 304 Stainless Steel Inner Ring 304 Stainless Steel Outer Ring Carbon Steel Centering Ring #300 Pound304 SS Spiral Wound FG, 304 SS IR, CS OR
Spiral Wound Gasker 304 Stainless Steel Inner Ring 304 Stainless Steel Outer Ring Carbon Steel Centering Ring #300 Pound304 SS Spiral Wound FG, 304 SS IR, CS OR

Product Specification

Pipe Diameter
26
Flange Rating
300#
Full Face or Ring
Ring
Series
A
Inside Diameter
25.750
Outside Diameter
32.880
Thickness
0.175
Outer Ring Material
Carbon Steel
Inner Ring Material
304 Stainless Steel
Winding Material
304 Stainless Steel
Filler/Binder Material
Flexible Graphite
Material
Metal
Country of Origin
Unrestricted Origin

Governing Standards

ASME B16.20 Covers metal ring-joint gaskets, spiral-wound gaskets, metal-jacketed gaskets, and grooved metal gaskets with covering layers.
ASME B16.47 Covers pressure-temperature ratings, materials, dimensions, tolerances, marking, and testing for pipe flanges in sizes NPS 26 through NPS 60. Included are flanges with rating class designations 75, 150, 300, 400, 600, and 900 with requirements given in both SI (Metric) and U. S. Customary units, with diameter of bolts and flange bolt hole expressed in inch units.

Spiral Wound Gasket with Inner Ring

Color Codes

Spiral wound gaskets shall be marked with a color code that identifies the windings and filler materials. A continuous color around the outer edge of the centering ring shall identify the winding metal. The color identifying the filler material for NPS 1 1/2 and larger shall have four intermittent stripes spaced approximately 90 deg apart on the outer edge of the centering ring. Smaller size gaskets shall have a minimum of two stripes 180 deg apart. The colors shall conform to those listed in the table below.

Per ASME B16.20-2007
Metallic Winding Materials OD Color Code
Carbon Steel Silver
304 Stainless Steel Yellow
316L Stainless Steel Green
317L Stainless Steel Maroon
321 Stainless Steel Turquoise
347 Stainless Steel Blue
Monel 400 Orange
Nickel 200 Red
Titanium Purple
20Cb-3 Alloy Black
Hastelloy B Brown
Hastelloy C Beige
Inconel 600 Gold
Incoloy 800 White
Per ASME B16.20-2007
Nonmetallic Filler Materials Color Code
Polytetrafluoroethylene White Stripe
Mica-Graphite Pink Stripe
Flexible Graphite Gray Stripe
Ceramic Light Green Stripe

Dimensional Specifications

Per ASME B16.20-2017
  Pipe Diameter
1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 4 5 6 8 10 12 14 16 18 20 24
Inner Ring ID
per Class		 150# 0.56 0.81 1.06 1.50 1.75 2.19 2.62 3.19 4.19 5.19 6.19 8.50 10.56 12.50 13.75 15.75 17.69 19.69 23.75
300# 0.56 0.81 1.06 1.50 1.75 2.19 2.62 3.19 4.19 5.19 6.19 8.50 10.56 12.50 13.75 15.75 17.69 19.69 23.75
600# 0.56 0.81 1.06 1.50 1.75 2.19 2.62 3.19 4.04 5.05 6.10 8.10 10.05 12.10 13.50 15.35 17.25 19.25 23.25
900# 0.56 0.81 1.06 1.31 1.63 2.06 2.50 3.10 4.05 5.05 6.10 7.75 9.69 11.50 12.63 14.75 16.75 19.00 23.25
1500# 0.56 0.81 1.06 1.31 1.63 2.06 2.50 3.10 3.85 4.90 5.80 7.75 9.69 11.50 12.63 14.50 16.75 18.75 22.75
2500# 0.56 0.81 1.06 1.31 1.63 2.06 2.50 3.10 3.85 4.90 5.80 7.75 9.69 11.50          
Winding ID
per Class		 150# 0.75 1.00 1.25 1.88 2.13 2.75 3.25 4.00 5.00 6.13 7.19 9.19 11.31 13.38 14.63 16.63 18.69 20.69 24.75
300# 0.75 1.00 1.25 1.88 2.13 2.75 3.25 4.00 5.00 6.13 7.19 9.19 11.31 13.38 14.63 16.63 18.69 20.69 24.75
600# 0.75 1.00 1.25 1.88 2.13 2.75 3.25 4.00 4.75 5.81 6.88 8.88 10.81 12.88 14.25 16.25 18.50 20.50 24.75
900# 0.75 1.00 1.25 1.56 1.80 2.31 2.75 3.75 4.75 5.81 6.88 8.75 10.88 12.75 14.00 16.25 18.25 20.50 24.75
1500# 0.75 1.00 1.25 1.56 1.80 2.31 2.75 3.63 4.63 5.63 6.75 8.50 10.50 12.75 14.00 16.00 18.25 20.25 25.25
2500# 0.75 1.00 1.25 1.56 1.88 2.31 2.75 3.63 4.63 5.63 6.75 8.50 10.93 12.50          
Winding OD
per Class		 150# 1.25 1.56 1.88 2.38 2.75 3.38 3.88 4.75 5.88 7.00 8.25 10.38 12.50 14.75 16.00 18.25 20.75 22.75 27.00
300# 1.25 1.56 1.88 2.38 2.75 3.38 3.88 4.75 5.88 7.00 8.25 10.38 12.50 14.75 16.00 18.25 20.75 22.75 27.00
600# 1.25 1.56 1.88 2.38 2.75 3.38 3.88 4.75 5.88 7.00 8.25 10.38 12.50 14.75 16.00 18.25 20.75 22.75 27.00
900# 1.25 1.56 1.88 2.38 2.75 3.38 3.88 4.75 5.88 7.00 8.25 10.13 12.25 14.50 15.75 18.00 22.50 22.50 26.75
1500# 1.25 1.56 1.88 2.38 2.75 3.38 3.88 4.75 5.88 7.00 8.25 10.13 12.25 14.50 15.75 18.00 22.50 22.50 26.75
2500# 1.25 1.56 1.88 2.38 2.75 3.38 3.88 4.75 5.88 7.00 8.25 10.13 12.25 14.50          
Outer Ring OD
per Class		 150# 1.88 2.25 2.63 3.00 3.38 4.13 4.88 5.38 6.88 7.75 8.75 11.00 13.38 16.13 17.75 20.25 21.63 23.88 28.25
300# 2.13 2.50 2.88 3.25 3.75 4.38 5.13 5.88 7.13 8.50 9.88 12.13 14.25 16.63 19.13 21.25 23.50 25.75 30.50
600# 2.13 2.50 2.88 3.25 3.75 4.38 5.13 5.88 7.63 9.50 10.50 12.63 15.75 18.00 19.38 22.25 24.13 26.88 31.13
900# 2.50 2.75 3.13 3.50 3.88 5.63 6.50 6.63 8.13 9.75 11.38 14.13 17.13 19.63 20.50 22.63 25.13 27.50 33.00
1500# 2.50 2.75 3.13 3.50 3.88 5.63 6.50 6.88 8.25 10.00 11.13 13.88 17.13 20.50 22.75 25.25 27.75 29.75 35.50
2500# 2.75 2.25 3.38 4.13 4.63 5.75 6.63 7.75 9.25 11.00 12.50 15.25 18.75 21.63          
Per ASME B16.47-2017
Series A Pipe Diameter
26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60
Inner Ring ID
per Class		 150# 25.75 27.75 29.75 31.75 33.75 35.75 37.75 39.75 41.75 43.75 45.75 47.75 49.75 51.75 53.50 55.50 57.50 59.50
300# 25.75 27.75 29.75 31.75 33.75 35.75 37.50 39.50 41.50 43.50 45.38 47.63 49.00 52.00 53.25 55.25 57.00 60.00
600# 25.50 27.50 29.75 32.00 34.00 36.13 37.50 39.75 42.00 43.75 45.75 48.00 50.00 52.00 54.25 56.25 58.00 60.25
900# 26.00 28.00 30.25 32.00 34.00 36.25 39.75 41.75 43.75 45.50 48.00 50.00            
Winding ID
per Class		 150# 26.50 28.50 30.50 32.50 34.50 36.50 38.50 40.50 42.50 44.50 46.50 48.50 50.50 52.50 54.50 56.50 58.50 60.50
300# 27.00 29.00 31.25 33.50 35.50 37.63 38.50 40.25 42.25 44.50 46.38 48.63 51.00 53.00 55.25 57.25 59.50 61.50
600# 27.00 29.00 31.25 33.50 35.50 37.63 39.00 41.25 43.50 45.75 47.75 50.00 52.00 54.00 56.25 58.25 60.50 62.75
900# 27.00 29.00 31.25 33.50 35.50 37.75 40.75 43.25 45.25 47.50 50.00 52.00            
Winding OD
per Class		 150# 27.75 29.75 31.75 33.88 35.88 38.13 40.13 42.13 44.25 46.38 48.38 50.38 52.50 54.50 56.50 58.50 60.50 62.50
300# 29.00 31.00 33.25 35.50 37.50 39.63 40.00 42.13 44.13 46.50 48.38 50.63 53.00 55.00 57.25 59.25 61.50 63.50
600# 29.00 31.00 33.25 35.50 37.50 39.63 41.00 43.25 45.50 47.75 49.75 52.00 54.00 56.00 58.25 60.25 62.50 64.75
900# 29.00 31.00 33.25 35.50 37.50 39.75 42.75 45.25 47.25 49.50 52.00 54.00            
Outer Ring OD
per Class		 150# 30.50 32.75 34.75 37.00 39.00 41.25 43.75 45.75 48.00 50.25 52.25 54.50 56.50 58.75 61.00 63.25 65.50 67.50
300# 32.88 35.38 37.50 39.63 41.63 44.00 41.50 43.88 45.88 48.00 50.13 52.13 54.25 56.25 58.75 60.75 62.75 64.75
600# 34.13 36.00 38.25 40.25 42.25 44.50 43.50 45.50 48.00 50.00 52.25 54.75 57.00 59.00 61.25 63.50 65.50 68.25
900# 34.75 37.25 39.75 42.25 44.75 47.25 47.25 49.25 51.25 53.88 56.50 58.50            
Per ASME   B16.47-2017
Series B Pipe Diameter
26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60
Inner Ring ID
per Class		 150# 25.75 27.75 29.75 31.75 33.75 35.75 37.75 39.75 41.75 43.75 45.75 47.75 49.75 51.75 53.75 56.00 58.19 60.44
300# 25.75 27.75 29.75 31.75 33.75 35.75 38.25 40.25 42