Gaskets,Packings, & Seals Inc.  P.O. Box 509  Parkersburg, WV 26102  Tel: 304-422-3880 Fax: 304-422-9476

Large Diameter Spiral Wound Dimensions
To suite ASME B16.20 for use with B16.47
Series B MSS SP-44 Flanges
CLASS 900
		GASKET			OUTER
NPS	INNER	INSIDE	OUTSIDE		RING
	RING	DIAMETER	DIAMETER		O.D.
26	26.25*	27.00	29.00		34.75
28	28.00*	29.00	31.00		37.25
30	30.50*	31.25	33.25		39.75
32	32.00*	33.50	35.50		42.25
34	34.00*	35.50	37.50		44.75
36	36.25*	37.75	39.75		47.25
38	39.75*	40.75	42.75		47.25
40	41.75*	43.25	45.25		49.25
42	43.75*	45.25	47.25		51.25
44	45.50*	47.50	49.50		53.88
46	48.00*	50.00	52.00		56.50
48	50.00*	52.00	54.00		58.50
**
"*"-Denotes that an inner ring is required.
"**"-Denotes that there are no Class 900 flanges for 50"and larger

Email: help@sealsolutions.com