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

Large Diameter Spiral Wound Dimensions
ASME B16.20 for use with B16.47 Series B
API 605
Class 900
	INNER	GASKET			OUTER
NPS	RING	INSIDE	OUTSIDE		RING
	I.D.	DIAMETER	DIAMETER		O.D.
26	26.50*	27.25	29.50		33.00
28	28.50*	29.25	31.50		35.50
30	31.00*	31.75	33.75		37.75
32	33.00*	34.00	36.00		40.00
34	35.25*	36.25	38.25		42.25
36	36.50*	37.25	39.25		44.25
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

Large Diameter Spiral Wound Dimensions
ASME B16.20 for use with B16.47 Series B
API 605
Class 900
	INNER	GASKET			OUTER
NPS	RING	INSIDE	OUTSIDE		RING
	I.D.	DIAMETER	DIAMETER		O.D.
26	26.50*	27.25	29.50		33.00
28	28.50*	29.25	31.50		35.50
30	31.00*	31.75	33.75		37.75
32	33.00*	34.00	36.00		40.00
34	35.25*	36.25	38.25		42.25
36	36.50*	37.25	39.25		44.25
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