Spiral Wound ANSI Class 75 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)	Sealing Element Inside Diameter B	Sealing Element Outside Diameter C	Outer Ring Outside Diameter D
26	26.25	27.00	27.88
28	28.25	29.13	29.88
30	30.25	31.13	31.88
32	32.25	33.13	33.88
34	34.25	35.13	35.88
36	36.25	37.25	38.31
38	38.25	39.31	40.31
40	40.25	41.31	42.31
42	42.25	43.25	44.31
44	44.25	45.50	46.50
46	46.25	47.50	48.50
48	48.38	49.50	50.50
50	50.25	51.50	52.50
52	52.38	53.63	54.63
54	54.38	55.63	56.63
56	56.50	57.88	58.88
58	58.50	59.88	60.88
60	60.50	61.75	62.88