How it works
Sealing is achieved by plastic deformation of the ring under flange bolt load, providing metal-to-metal sealing for the most demanding conditions.
Ring joints for grooved flanges with metal-to-metal sealing
RTJ ring joints are made from soft iron or stainless steel. Designed for RTJ flanges with machined oval, octagonal, RX or BX grooves, they are suitable for high-pressure and high-temperature service.
The essential product information is grouped here to make comparisons and project preparation easier.
Sealing is achieved by plastic deformation of the ring under flange bolt load, providing metal-to-metal sealing for the most demanding conditions.
The table below matches RTJ references with nominal sizes and pressure classes.
Review the available values, formats and technical tables for this product.
Nominal dimensions in mm, with inches in brackets. Pressure classes are shown in lb.
| Ref. | 150 | 300/600 | 900 | 1500 | 2500 |
|---|---|---|---|---|---|
| R11 | — | 15 (1/2") | — | — | — |
| R12 | — | — | 15 (1/2") | 15 (1/2") | — |
| R13 | — | 20 (3/4") | — | — | 15 (1/2") |
| R14 | — | — | 20 (3/4") | 20 (3/4") | — |
| R15 | 25 (1") | — | — | — | — |
| R16 | — | 25 (1") | 25 (1") | 25 (1") | 20 (3/4") |
| R17 | 32 (1 1/4") | — | — | — | — |
| R18 | — | 32 (1 1/4") | 32 (1 1/4") | 32 (1 1/4") | 25 (1") |
| R19 | 40 (1 1/2") | — | — | — | — |
| R20 | — | 40 (1 1/2") | 40 (1 1/2") | 40 (1 1/2") | — |
| R21 | — | — | — | — | 32 (1 1/4") |
| R22 | 50 (2") | — | — | — | — |
| R23 | — | 50 (2") | — | — | — |
| R24 | — | — | 50 (2") | 50 (2") | — |
| R25 | 65 (2 1/2") | — | — | — | — |
| R26 | — | 65 (2 1/2") | — | — | — |
| R27 | — | — | 65 (2 1/2") | 65 (2 1/2") | — |
| R28 | — | — | — | — | 65 (2 1/2") |
| R29 | 80 (3") | — | — | — | — |
| R30 | — | 80 (3") | — | — | — |
| R31 | — | — | 80 (3") | — | — |
| R32 | — | — | — | — | 80 (3") |
| R33 | 90 (3 1/2") | — | — | — | — |
| R34 | — | 90 (3 1/2") | — | — | — |
| R35 | — | — | — | 80 (3") | — |
| R36 | 100 (4") | — | — | — | — |
| R37 | — | 100 (4") | 100 (4") | — | — |
| R38 | — | — | — | — | 100 (4") |
| R39 | — | — | — | 100 (4") | — |
| R40 | 125 (5") | — | — | — | — |
| R41 | — | 125 (5") | 125 (5") | — | — |
| R42 | — | — | — | — | 125 (5") |
| R43 | 150 (6") | — | — | — | — |
| R44 | — | — | — | 125 (5") | — |
| R45 | — | 150 (6") | 150 (6") | — | — |
| R46 | — | — | — | 150 (6") | — |
| R47 | — | — | — | — | 150 (6") |
| R48 | 200 (8") | — | — | — | — |
| R49 | — | 200 (8") | 200 (8") | — | — |
| R50 | — | — | — | 200 (8") | — |
| R51 | — | — | — | — | 200 (8") |
| R52 | 250 (10") | — | — | — | — |
| R53 | — | 250 (10") | 250 (10") | — | — |
| R54 | — | — | — | 250 (10") | — |
| R55 | — | — | — | — | 250 (10") |
| R56 | 300 (12") | — | — | — | — |
| R57 | — | 300 (12") | 300 (12") | — | — |
| R58 | — | — | — | 300 (12") | — |
| R59 | 350 (14") | — | — | — | — |
| R60 | — | — | — | — | 300 (12") |
| R61 | — | 350 (14") | — | — | — |
| R62 | — | — | 350 (14") | — | — |
| R63 | — | — | — | 350 (14") | — |
| R64 | 400 (16") | — | — | — | — |
| R65 | — | 400 (16") | — | — | — |
| R66 | — | — | 400 (16") | — | — |
| R67 | — | — | — | 400 (16") | — |
| R68 | 450 (18") | — | — | — | — |
| R69 | — | 450 (18") | — | — | — |
| R70 | — | — | 450 (18") | — | — |
| R71 | — | — | — | 450 (18") | — |
| R72 | 500 (20") | — | — | — | — |
| R73 | — | 500 (20") | — | — | — |
| R74 | — | — | 500 (20") | — | — |
| R75 | — | — | — | 500 (20") | — |
| R76 | 600 (24") | — | — | — | — |
| R77 | — | 600 (24") | — | — | — |
| R78 | — | — | 600 (24") | — | — |
| R79 | — | — | — | 600 (24") | — |
| R80 | 550 (22") | — | — | — | — |
| R81 | — | 550 (22") | — | — | — |
| R93 | 650 (26") | — | — | — | — |
| R94 | 700 (28") | — | — | — | — |
| R95 | 750 (30") | — | — | — | — |
| R96 | 800 (32") | — | — | — | — |
| R97 | 850 (34") | — | — | — | — |
| R98 | 900 (36") | — | — | — | — |
| R100 | — | 650 (26") | — | — | — |
| R101 | — | 700 (28") | — | — | — |
| R102 | — | 750 (30") | — | — | — |
| R103 | — | 800 (32") | — | — | — |
| R104 | — | 850 (34") | — | — | — |
| R105 | — | 900 (36") | — | — | — |
RTJ ring joints are made from soft iron or stainless steel. Designed for RTJ flanges with machined oval, octagonal, RX or BX grooves, they are suitable for high-pressure and high-temperature service.
The main stated properties are: Materials : Soft iron or stainless steel ; Grooves : Oval, octagonal, RX, BX ; Seal type : Metal to metal.
Sealing is achieved by plastic deformation of the ring under flange bolt load, providing metal-to-metal sealing for the most demanding conditions.
Tell our technical team about your application, dimensions and operating conditions.
Request a technical review and quote