RING TYPE JOINT GASKETS

Description:

 Ring Joint Gaskets (RTJ) are metallic sealing rings that fit into ring grooves and are ideal for high pressure and high temperature applications. They are commonly utilized in valves and pipes in the petrochemical and oil sectors. The choice of material may be determined to suit higher temperatures and aggressive media. They comply with ASME B16.20 standards.

To guarantee appropriate deformation of the gasket without harming the flange face, the RTJ gasket material is chosen based on the chemical compatibility with the media and the flange’s hardness.

IFG®

RING TYPE JOINT

TYPE

NOMINAL PIPE SIZE

CLASS RATINGS

Type R Oval and Octagonal

1/2″ to 24″ 26″ to 36″ 1 ½” to 20”

150 to 2500 ASME B16.20 300 to 900 ASME B16.20 Series A API 6A

TYPE RX

1 1/2″ to 24″ 26″ to 36″ 1 ½ ” to 20″

720 to 5000 ASME B16.20 300 to 900 ASME B16.20 API 6A

Type BX

1 11/16″ to 21 1/4″

5000 to 20000 ASME B16.20

COMMON MATERIALS

MATERIAL

BRINELL HARDNESS

TEMPERATURE LIMITATION

IDENTIFICATION

Soft Iron

90

-60 to 500 °C

D

Low Carbon Steel

120

-40 to 500 °C

S

4-6% Cr ½% Mo

130

-250 to 500 °C

F5

304

160

-250 to 550 °C

S304

316

160

-110 to 550 °C

S316

321

160

-250 to 550 °C

S321

347

160

-250 to 550 °C

S347

410

170

-20 to 500 °C

S410

Inconel 625

450 °C

625

Incoloy 825

450 °C

825

Hastelloy C-276

450 °C

C-276

Titanium

450 °C

TI

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