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ASME B16.5 RTJ

The Ring Type Joint flanges are typically used in high pressure (Class 600 and higher rating) and/or high temperature services above 800 ° F (427 ℃ ).

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Description

Ring-Type Joint (RTJ)

The Ring Type Joint flanges are typically used in high pressure (Class 600 and higher rating) and/or high temperature services above 800 ° F (427 ℃ ). They have grooves cut into their faces which steel ring gaskets. The flanges seal when tightened bolts compress the gasket between the flanges into the grooves, deforming (or Coining) the gasket to make intimate contact inside the grooves, creating a metal to metal seal.

An RTJ flange may have a raised face with a ring groove machined into it. This raised face does not serve as any part of the sealing means. For RTJ flanges that seal with ring gaskets, the raised faces of the connected and tightened flanges may contact each other. In this case the compressed gasket will not bear additional load beyond the bolt tension, vibration and movement cannot further crush the gasket and lessen the connecting tension.

Ring type joint gaskets

Ring Type Joint gaskets are metallic sealing rings, suitable for high-pressure and high-temperature applications. They are always applied to special, accompanying flanges which ensure good, reliable sealing with the correct choice of profiles and material.

Ring Type Joint gaskets are designed to seal by "initial line contact" or wedging action between the mating flange and the gasket. By applying pressure on the seal interface through bolt force, the "softer" metal of the gasket flows into the microfine structure of the harder flange material, and creating a very tight and efficient seal.

Class	Size		Ring		Dimensions(mm)			Bolt	L1
Class	DN	NPS	Number	P	E	F	K	N	L1
Class 150	25	1	R15	47.63	6.35	8.74	63.5	4	75
	32	1 1/4	R17	57.15	6.35	8.74	73	4	85
	40	1 1/2	R19	65.07	6.35	8.74	82.5	4	85
	50	2	R22	82.55	6.35	8.74	102	4	95
	65	2 1/2	R25	101.6	6.35	8.74	121	4	100
	80	3	R29	114.3	6.35	8.74	133	4	100
	100	4	R36	149.23	6.35	8.74	171	4	100
	125	5	R40	171.45	6.35	8.74	194	4	110
	150	6	R43	193.68	6.35	8.74	219	4	115
	200	8	R48	247.65	6.35	8.74	273	4	120
	250	10	R52	304.8	6.35	8.74	330	4	125
	300	12	R56	381	6.35	8.74	406	4	135
	350	14	R59	396.88	6.35	8.74	425	3	145
	400	16	R64	454.03	6.35	8.74	483	3	145
	450	18	R68	517.53	6.35	8.74	546	3	160
	500	20	R72	558.8	6.35	8.74	597	3	170
	600	24	R76	673.1	6.35	8.74	711	3	185

Class	Size		Ring		Dimensions(mm)			Bolt	L1
Class	DN	NPS	Number	P	E	F	K	N	L1
Class 300	15	1/2	R11	34.14	5.54	7.14	51	3	75
	20	3/4	R13	42.88	6.35	8.74	63.5	4	90
	25	1	R16	50.8	6.35	8.74	70	4	90
	32	1 1/4	R18	60.33	6.35	8.74	79.5	4	95
	40	1 1/2	R20	68.27	6.35	8.74	90.5	4	100
	50	2	R23	82.55	7.92	11.91	108	6	100
	65	2 1/2	R26	101.6	7.92	11.91	127	6	115
	80	3	R31	123.83	7.92	11.91	146	6	120
	100	4	R37	149.23	7.92	11.91	175	6	125
	125	5	R41	180.98	7.92	11.91	210	6	135
	150	6	R45	211.12	7.92	11.91	241	6	140
	200	8	R49	269.88	7.92	11.91	302	6	150
	250	10	R53	323.85	7.92	11.91	356	6	170
	300	12	R57	381	7.92	11.91	413	6	185
	350	14	R61	419.1	7.92	11.91	457	6	190
	400	16	R65	469.9	7.92	11.91	508	6	205
	450	18	R69	533.4	7.92	11.91	575	6	210
	500	20	R73	584.2	9.53	13.49	635	6	220
	600	24	R77	692.15	11.13	16.66	749	6	255

Class	Size		Ring		Dimensions(mm)			Bolt	L1
Class	DN	NPS	Number	P	E	F	K	N	L1
Class 600	15	1/2	R11	34.14	5.54	7.14	51	3	75
	20	3/4	R13	42.88	6.35	8.74	63.5	4	90
	25	1	R16	50.8	6.35	8.74	70	4	90
	32	1 1/4	R18	60.33	6.35	8.74	79.5	4	95
	40	1 1/2	R20	68.27	6.35	8.74	90.5	4	110
	50	2	R23	82.55	7.92	11.91	108	5	110
	65	2 1/2	R26	101.6	7.92	11.91	127	5	120
	80	3	R31	123.83	7.92	11.91	146	5	125
	100	4	R37	149.23	7.92	11.91	175	5	145
	125	5	R41	180.98	7.92	11.91	210	5	165
	150	6	R45	211.12	7.92	11.91	241	5	170
	200	8	R49	269.88	7.92	11.91	302	5	195
	250	10	R53	323.85	7.92	11.91	356	5	215
	300	12	R57	381	7.92	11.91	413	5	220
	350	14	R61	419.1	7.92	11.91	457	5	235
	400	16	R65	469.9	7.92	11.91	508	5	255
	450	18	R69	533.4	7.92	11.91	575	5	275
	500	20	R73	584.2	9.53	13.49	635	5	290
	600	24	R77	692.15	11.13	16.66	749	6	335

Class	Size		Ring		Dimensions(mm)			Bolt	L1
Class	DN	NPS	Number	P	E	F	K	N	L1
Class 900	15	1/2	R12	39.67	6.35	8.74	60.5	4	110
	20	3/4	R14	44.45	6.35	8.74	66.5	4	115
	25	1	R16	50.8	6.35	8.74	71.5	4	125
	32	1 1/4	R18	60.33	6.35	8.74	81	4	125
	40	1 1/2	R20	68.27	6.35	8.74	92	4	140
	50	2	R24	95.25	7.92	11.91	124	3	145
	65	2 1/2	R27	107.95	7.92	11.91	137	3	160
	80	3	R31	123.83	7.92	11.91	156	4	145
	100	4	R37	149.23	7.92	11.91	181	4	170
	125	5	R41	180.98	7.92	11.91	216	4	190
	150	6	R45	211.12	7.92	11.91	241	4	195
	200	8	R49	269.88	7.92	11.91	308	4	220
	250	10	R53	323.85	7.92	11.91	362	4	235
	300	12	R57	381	7.92	11.91	419	4	255
	350	14	R62	419.1	11.13	16.66	467	4	280
	400	16	R66	469.9	11.13	16.66	524	4	290
	450	18	R70	533.4	12.7	19.84	594	5	335
	500	20	R74	584.2	12.7	19.84	648	5	360
	600	24	R78	692.15	15.88	26.97	772	6	455

Class	Size		Ring		Dimensions(mm)			Bolt	L1
Class	DN	NPS	Number	P	E	F	K	N	L1
Class 1500	15	1/2	R12	39.67	6.35	8.74	60.5	4	110
	20	3/4	R14	44.45	6.35	8.74	66.5	4	115
	25	1	R16	50.8	6.35	8.74	71.5	4	125
	32	1 1/4	R18	60.33	6.35	8.74	81	4	125
	40	1 1/2	R20	68.27	6.35	8.74	92	4	140
	50	2	R24	95.25	7.92	11.91	124	3	145
	65	2 1/2	R27	107.95	7.92	11.91	137	3	160
	80	3	R35	136.53	7.92	11.91	168	3	180
	100	4	R39	161.93	7.92	11.91	194	3	195
	125	5	R44	193.68	7.92	11.91	229	3	250
	150	6	R46	211.14	9.53	13.94	248	3	265
	200	8	R50	269.88	11.13	16.66	318	4	300
	250	10	R54	323.85	11.13	16.66	371	4	345
	300	12	R58	381	14.27	23.01	438	5	385
	350	14	R63	419.1	15.88	26.97	489	6	425
	400	16	R67	469.9	17.48	30.18	546	8	470
	450	18	R71	533.4	17.48	30.18	613	8	525
	500	20	R75	584.2	17.48	33.32	673	10	565
	600	24	R79	692.15	20.62	36.53	794	11	650

Class	Size		Ring		Dimensions(mm)			Bolt	L1
Class	DN	NPS	Number	P	E	F	K	N	L1
Class 2500	15	1/2	R13	42.88	6.35	8.74	65	4	120
	20	3/4	R16	50.8	6.35	8.74	73	4	125
	25	1	R18	60.33	6.35	8.74	82.5	4	140
	32	1 1/4	R21	72.23	7.92	11.94	102	3	150
	40	1 1/2	R23	82.55	7.92	11.94	114	3	170
	50	2	R26	101.6	7.92	11.94	133	3	180
	65	2 1/2	R28	111.13	9.53	13.49	149	3	205
	80	3	R32	127	9.53	13.49	168	3	230
	100	4	R38	157.18	11.13	16.66	203	4	260
	125	5	R42	190.5	12.7	19.84	241	4	310
	150	6	R47	228.6	12.7	19.84	279	4	355
	200	8	R51	279.4	14.27	23.01	340	5	395
	250	10	R55	342.9	17.48	30.18	425	6	510
	300	12	R60	406.4	17.48	33.32	495	8	560

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