Spiral Wound ANSI Class 600 Gasket, B16.47 ,Series B (in)

Dimensions to ASME B16.20 - Metallic Gaskets for Pipe Flanges: Ring-Joint, Spiral-Wound, and Jacketed
Inner rings are recommended for all graphite filled gaskets, required for all PTFE filled gaskets.
The gasket outside diameter tolerance for NPS 26" through NPS 60" is ±0.06".
The gasket inside diameter tolerance for NPS 26" through NPS 34" is ±0.03"; for NPS 36" through NPS 60" is ±0.05".
The centering ring outside diameter tolerance is ±0.03".

Pipe Size (NPS)	Inner Ring Inside Diameter A	Sealing Element Inside Diameter B	Sealing Element Outside Diameter C	Outer Ring Outside Diameter D
26	25.38	26.13	28.13	30.13
28	27.25	27.75	29.75	32.25
30	29.63	30.63	32.63	34.63
32	31.25	32.75	34.75	36.75
34	33.50	35.00	37.00	39.25
36	35.50	37.00	39.00	41.25
38	37.50	39.00	41.00	43.50
40	39.75	41.25	43.25	45.50
42	42.00	43.50	45.50	48.00
44	43.75	45.75	47.75	50.00
46	45.75	47.75	49.75	52.25
48	48.00	50.00	52.00	54.75
50	50.00	52.00	54.00	57.00
52	52.00	54.00	56.00	59.00
54	54.25	56.25	58.25	61.25
56	56.25	58.25	60.25	63.50
58	58.00	60.50	62.50	65.50
60	60.25	62.75	64.75	68.25