Dimensions Ring Joint Facings

Ring Type Joint Flange is a method of ensuring leak proof flange connection at high pressures. A metal ring is compressed into a hexagonal groove on the face of the flange to make the seal. 

This jointing method can be employed on Weld Neck, Slip-on and Blind Flange.

Dimensions Ring Joint Facings

Nominal Size							Groove Dimensions					Diameter of Raised Portion, K
Class 150 NPS	Class 300 NPS	Class 400 NPS	Class 600 NPS	Class 900 NPS	Class 1500 NPS	Class 2500 NPS	Groove Number	Pitch Diameter, P	Depth, E	Width, F	Radius at Bottom, R	Class 150 NPS	Class 300,  600 NPS	Class 900 NPS	Class 1500 NPS	Class 2500 NPS
_	1/2	_	1/2	_	_	_	R11	34.14	5.54	7.14	0.8		51.0
_	_	_	_	_	1/2	_	R12	39.67	6.35	8.74	0.8				60.5
_	3/4	_	3/4	_	_	1/2	R13	42.88	6.35	8.74	0.8		63.5			65.0
_	_	_	_	_	3/4	_	R14	44.45	6.35	8.74	0.8				66.5
1	_	_	_	_	_	_	R15	47.63	6.35	8.74	0.8	63.5
	1	_	1	_	1	3/4	R16	50.80	6.35	8.74	0.8		70.0		71.5	73.0
1 1/4	_	_	_	_	_	_	R17	57.15	6.35	8.74	0.8	73.0
	1 1/4	_	1 1/4	_	1 1/4	1	R18	60.33	6.35	8.74	0.8		79.5		81.0	82.5
1 1/2	_	_	_	_	_	_	R19	65.07	6.35	8.74	0.8	82.5
_	1 1/2	_	1 1/2	_	1 1/2	_	R20	68.27	6.35	8.74	0.8		90.5		92.0
_	_	_	_	_	_	1 1/4	R21	72.23	7.92	11.91	0.8					102.0
2	_	_	_	_	_	_	R22	82.55	6.35	8.74	0.8	102.0
_	2	_	2	_	_	1 1/2	R23	82.55	7.92	11.91	0.8		108.0			114.0
_	_	_	_	_	2	_	R24	95.25	7.92	11.91	0.8				124.0
2 1/2	_	_	_	_	_	_	R25	101.60	6.35	8.74	0.8	121.0
_	2 1/2	_	2 1/2	_	_	2	R26	101.60	7.92	11.91	0.8		127.0			133.0
_	_	_	_	_	2 1/2	_	R27	107.95	7.92	11.91	0.8				137.0
_	_	_	_	_	_	2 1/2	R28	111.13	9.53	13.49	0.8					149.0
3	_	_	_	_	_	_	R29	114.30	6.35	8.74	0.8	133.0
_	(2)	_	(2)	_	_	_	R30	117.48	7.92	11.91	0.8
_	3 (2)	_	3 (2)	3	_	_	R31	123.83	7.92	11.91	0.8		146.0	156.0
_	_	_	_	_	_	3	R32	127.00	9.53	13.49	1.5					168.0
3 1/2	_	_	_	_	_	_	R33	131.78	6.35	8.74	0.8	154.0
_	3 1/2	_	3 1/2	_	_	_	R34	131.78	7.92	11.91	0.8		159.0
_	_	_	_	_	3	_	R35	136.53	7.92	11.91	0.8				168.0
4	_	_	_	_	_	_	R36	149.23	6.35	8.74	0.8	171.0
_	4	4	4	4	_	_	R37	149.23	7.92	11.91	0.8		175.0	181.0
_	_	_	_	_	_	4	R38	157.18	11.13	16.66	1.5					203.0
_	_	_	_	_	4	_	R39	161.93	7.92	11.91	0.8				194.0
5	_	_	_	_	_	_	R40	171.45	6.35	8.74	0.8	194.0
_	5	5	5	5	_	_	R41	180.98	7.92	11.91	0.8		210.0	216.0
_	_	_	_	_	_	5	R42	190.50	12.70	19.84	1.5					241.0
6	_	_	_	_	_	_	R43	193.68	6.35	8.74	0.8	219.0
_	_	_	_	_	5	_	R44	193.68	7.92	11.91	0.8				229.0
_	6	6	6	6	_	_	R45	211.12	7.92	11.91	0.8		241.0	241.0
_	_	_	_	_	6	_	R46	211.14	9.53	13.49	1.5				248.0
_	_	_	_	_	_	6	R47	228.60	12.70	19.84	1.5					279.0
8	_	_	_	_	_	_	R48	247.65	6.35	8.74	0.8	273.0
_	8	8	8	8	_	_	R49	269.88	7.92	11.91	0.8		302.0	308.0
_	_	_	_	_	8	_	R50	269.88	11.13	16.66	1.5		_	_	318.0	_
_	_	_	_	_	_	8	R51	279.40	14.27	23.01	1.5		_	_	_	340.0
10	_	_	_	_	_	_	R52	304.80	6.35	8.74	0.8	330.0	_	_	_	_
_	10	10	10	10	_	_	R53	323.85	7.92	11.91	0.8		356.0	362.0	_	_
_	_	_	_	_	10	_	R54	323.85	11.13	16.66	1.5		_	_	371.0	_
_	_	_	_	_	_	10	R55	342.90	17.48	30.18	2.4		_	_	_	425.0
12	_	_	_	_	_	_	R56	381.00	6.35	8.74	0.8	406.0	_	_	_	_
_	12	12	12	12	_	_	R57	381.00	7.92	11.91	0.8		413.0	429.0	_	_
_	_	_	_	_	12	_	R58	381.00	14.27	23.01	1.5		_	_	438.0	_
14	_	_	_	_	_	_	R59	396.88	6.35	8.74	0.8	425.0	_	_	_	_
_	_	_	_	_	_	12	R60	406.40	17.48	33.32	2.4		_	_	_	495.0
_	14	14	14	_	_	_	R61	419.10	7.92	11.91	0.8		457.0	_	_	_
_	_	_	_	14	_	_	R62	419.10	11.13	16.66	1.5		_	467.0	_	_
_	_	_	_	_	14	_	R63	419.10	15.88	26.97	2.4		_	_	489.0	_
16	_	_	_	_	_	_	R64	454.03	6.35	8.74	0.8	483.0	_	_	_	_
_	16	16	16	_	_	_	R65	469.90	7.92	11.19	0.8		508.0	_	_	_
_	_	_	_	16	_	_	R66	469.90	11.13	16.66	1.5		_	524.0	_	_
_	_	_	_	_	16	_	R67	469.90	17.48	30.18	2.4		_	_	546.0	_
18	_	_	_	_	_	_	R68	517.53	6.35	8.74	0.8	546.0	_	_	_	_
_	18	18	18	_	_	_	R69	533.40	7.92	11.91	0.8		575.0	_	_	_
_	_	_	_	18	_	_	R70	533.40	12.70	19.84	1.5		_	594.0	_	_
_	_	_	_	_	18	_	R71	533.40	17.48	30.18	2.4		_	_	613.0	_
20	_	_	_	_	_	_	R72	558.80	6.35	8.74	0.8	597.0	_	_	_	_
_	20	20	20	_	_	_	R73	584.20	9.53	13.49	1.5		635.0	_	_	_
_	_	_	_	20	_	_	R74	584.20	12.70	19.84	1.5		_	648.0	_	_
_	_	_	_	_	20	_	R75	584.20	17.48	33.32	2.4		_	_	673.0	_
24	_	_	_	_	_	_	R76	673.10	6.35	8.74	0.8	711.0	_	_	_	_
_	24	24	24	_	_	_	R77	692.15	11.13	16.66	1.5		749.0	_	_	_
_	_	_	_	24	_	_	R78	692.15	15.88	26.97	2.4		_	772.0	_	_
_	_	_	_	_	24	_	R79	692.15	20.62	36.53	2.4		_	_	794.0	_
_	26	26	26	_	_	_	R93	749.30	12.70	19.84	1.5	810.0
_	28	28	28	_	_	_	R94	800.10	12.70	19.84	1.5	861.0
_	30	30	30	_	_	_	R95	857.25	12.70	19.84	1.5	917.0
_	32	32	32	_	_	_	R96	914.40	14.27	23.01	1.5	984.0
_	34	34	34	_	_	_	R97	965.20	14.27	23.01	1.5	1035.0
_	36	36	36	_	_	_	R98	1022.35	14.27	23.01	1.5	1092.0
_	_	_	_	26	_	_	R100	749.30	17.48	30.18	2.3	832.0
_	_	_	_	28	_	_	R101	800.10	17.48	33.32	2.3	889.0
_	_	_	_	30	_	_	R102	857.25	17.48	33.32	2.3	946.0
_	_	_	_	32	_	_	R103	914.40	17.48	33.32	2.3	1003.0
_	_	_	_	34	_	_	R104	965.20	20.62	36.53	2.3	1067.0
_	_	_	_	36	_	_	R105	1022.35	20.62	36.53	2.3	1124.0