RTJ Gaskets

RTJ Gaskets / R-Series

The R-Type ring gasket can be ordered to two different profiles, oval or octagonal in cross-sections. Both types have identical pitch diameter as the flange groove they correspond to. These gaskets are used in pressures up to 5,000 PSI. The octagonal type has a higher sealing coeffient than the oval, therefore being the better gasket of the two. The oval type is the only gasket that will fit a bottom radiused groove. Flanges with flat bottom v-grooves will accept either style. Gaskets that have been torqued initiating a metal-to-metal seal should be discarded and not reused.

Pressure Class Ratings R-Gaskets For API 6B Flanges

	150	3/600	900	1500	2500	2000	3000	5000
R-11		1/2
R-12			1/2	1/2
R-13		3/4			1/2
R-14			3/4	3/4
R-15	1
R-16		1	1	1	3/4
R-17	1 1/4
R-18		1 1/4	1 1/4	1 1/4	1
R-19	1 1/2
R-20		1 1/2	1 1/2	1 1/2		1 1/2	1 1/2	1 1/2

	150	3/600	900	1500	2500	2000	3000	5000
R-21					1 1/4
R-22	2
R-23		2			1 1/2	2
R-24			2	2			2	2
R-25	2 1/2
R-26		2 1/2			2	2 1/2
R-27			2 1/2	2 1/2			2 1/2	2 1/2
R-28					2 1/2
R-29	3
R-30		3

	150	3/600	900	1500	2500	2000	3000	5000
R-31		3	3			3	3
R-32					3
R-33	3 1/2
R-34		3 1/2
R-35				3				3
R-36	4
R-37		4	4			4	4
R-38					4
R-39				4				4
R-40	5

	150	3/600	900	1500	2500	2000	3000	5000
R-41		5	5			5	5
R-42					5
R-43	6
R-44				5				5
R-45		6	6			6	6
R-46				6				6
R-47					6
R-48	8
R-49		8	8			8	8
R-50				8				8

	150	3/600	900	1500	2500	2000	3000	5000
R-51					8
R-52	10
R-53		10	10			10	10
R-54				10				10
R-55					10
R-56	12
R-57		12	12			12	12
R-58				12
R-59	14
R-60					12

	150	3/600	900	1500	2000	3000
R-61		14
R-62			14
R-63				14
R-64	16
R-65		16			16
R-66			16			16
R-67				16
R-68	18
R-69		18			18
R-70			18			18

	150	3/600	900	1500	2000	3000
R-71				18
R-72	20
R-73		20			20
R-74			20			20
R-75				20		18
R-76	24
R-77		24
R-78			24
R-79				24
R-80	22

	3/600	10000
R-81	22
R-82		1
R-83
R-84		1 1/2
R-85		2
R-86		2 1/2
R-87		3
R-88		4
R-89		3 1/2
R-90		5

	3/600	900	10000
R-91			10
R-92
R-93	26
R-94	28
R-95	30
R-96	32
R-97	34
R-98	36
R-99
R-100		26

	150	3/600	900	1500	2500	2000	3000	5000	10000
R-101			28
R-102			30
R-103			32
R-104			34
R-105			36

RTJ Gaskets / RX-Series

RX gaskets are designed for pressures up to 5,000 PSI. These gaskets are interchangeable with R-oval or R-octagonal rings used on API 6B flanges. RX types of gaskets are more costly than your standard oval or octagonal rings, therefore not as popular. RX type gaskets perform excellent in 6B flanged blowout preventer stacks, which requires the additional mass of the RX gasket to support the higher pressures with higher vibrations and heavier weights of these units. Gaskets that have been torqued initiating a metal-to-metal seal should be discarded and not reused.

Pressure Class Ratings RX-Gaskets For API 6B Flanges

	720	960	2000	3000	5000
RX-20	1 1/2	1 1/2	1 1/2	1 1/2	1 1/2
RX-23	2	2	2
RX-24				2	2
RX-25					3
RX-26	2 1/2	2 1/2	2 1/2
RX-27				2 1/2	2 1/2
RX-31	3	3	3	3
RX-35					3
RX-37	4	4	4	4
RX-39					4

	720	960	2000	3000	5000
RX-41	5	5	5	5
RX-44					5
RX-45	6	6	6	6
RX-46					6
RX-47					8
RX-49	8	8	8	8
RX-50					8
RX-53	10	10	10	10
RX-54					10
RX-57	12	12	12	12

	720	960	2000	2900	3000	5000
RX-63						14
RX-65	16	16	16
RX-66
RX-69	18	18	18		16
RX-70
RX-73	20	20	20		18
RX-74
RX-82				1	20
RX-84				1 1/2
RX-85				2

	720	960	2000	2900	3000	5000
RX-86				2 1/2
RX-87				3
RX-88				4
RX-89				3 1/2
RX-90				5
RX-91				10
RX-99	8	8	8		8
RX-201						1 3/8
RX-205						1 13/16
RX-210						2 9/16

	720	960	2000	2900	3000	5000
RX-215						4 1/16
RX-215						4 1/16 x 4 1/4

RTJ Gaskets / BX-Series

Although similar in style to the octagonal gaskets, the BX Series can only be used with 6BX flanges and 16BX hubs. BX-Gaskets have been designed for higher-pressure ratings starting at 5,000 lbs. and ending with 20,000 lbs. Pitch diameters on BX gaskets are slightly larger than the pitch diameter of the flange. This forces the gasket to initially seal on its outside angles and secondly seal with its inside angles as the flange is bolted down to respective torque settings. Gaskets that have been torqued initiating a metal-to-metal seal should be discarded and not reused.

Gaskets coin themselves (Blend In / Molds) to the surface finish of the groove, forming a custom surface seal. The vent hole on the BX Series through the gasket helps equalize pressures caught between the flange grooves. Gaskets that have been torqued initiating a metal-to-metal seal should be discarded and not reused.

Pressure Class Ratings BX-Gaskets For API 6BX Flanges

	10,000	15,000	20,000
BX-150	1 11/16	1 11/16
BX-151	1 13/16	1 13/16	1 13/16
BX-152	2 1/16	2 1/16	2 1/16
BX-153	2 9/16	2 9/16	2 9/16
BX-154	3 1/16	3 1/16	3 1/16
BX-155	4 1/16	4 1/16	4 1/16
BX-156	7 1/16	7 1/16	7 1/16
BX-157	9	9
BX-158	11	11
BX-159	13 5/8

	5,000	10,000
BX-160	13 5/8
BX-161	16 3/4
BX-162	16 3/4	16 3/4
BX-163	18 3/4
BX-164		18 3/4
BX-165	21 1/4
BX-166		21 1/4
BX-167		26 3/4*
BX-168		26 3/4**
BX-169		5 1/8

	5,000	10,000	15,000	20,000
BX-171
BX-172
BX-303

RTJ Gaskets / SRX & SBX Series

The American Petroleum has standardized the underwater utilization of ring gaskets with the SRX and the SBX series rings. There is no dimensional difference between the standard RX and SRX or the BX and SBX. They will fit into their appropriate flange designated numbers. The “S” prefix identifies a gasket as having intersecting vent holes, allowing a pressure less metal-to-metal initial contact between the gasket and flange groove, while made up underwater. For pressure class ratings on these gaskets refer back to their non “S” type standard gasket classification chart for the RX-Series and BX-Series. Gaskets that have been torqued initiating a metal-to-metal seal should be discarded and not reused.

Pressure Class Ratings

The pressure class ratings for the SRX series are the same as the RX Series

The pressure class ratings for the SBX series are the same as the BX Series

RTJ Gaskets / Rubber Coated Series

Rubber coated gaskets start with a precision machined low carbon steel gasket. We then add rubber which gets moulded to the gasket in an electrically induced 300 ton compression press in our own manufacturing plant. These gaskets are used in hydrostatic testing of equipment where testing pressures can exceed more than two times the equipment’s normal operating range.

With proper care, these gaskets can be reused numerous times. They also help to minimize and prevent additional damage to a flange groove.

We recommend storing these gaskets away from excessive heat and ultraviolet light. Shelf life is contingent on storage conditions but gaskets should remain useable for a minimum of 5 years.

RTJ Gaskets / OEM Gaskets

TXG uses a computerized CMM (Coordinate Measuring Machine) to inspect and deliver inspection reports for your OEM gaskets. TXG holds extensive manufacturing equipment and raw material stock supplied from quality cautious vendors.

Valve, wellhead and subsea gaskets can be manufactured in any material and coating combination. We can reverse engineer used gaskets to ensure obsolete or otherwise unidentified connections have a proper seal.