DESCRIPTION

Metallic ring joint gaskets are heavy duty, high-pressure gaskets largely used in offshore petrochemical applications. They are precision-engineered components designed to be used in conjunction with precision-machined flanges. All ring joints are manufactured to ASME B16.20 and API 6A. The gasket material is selected on a number of grounds primarily; chemical compatibility with the media and the hardness of the flange. The gasket material ideally needs to be roughly 30 Brinell less than the flange material to ensure sufficient deformation of the gasket without damaging the flange facing.

STOCK

We have select sizes in stock.

ALL PRESSURES AND TEMPERATURES ARE SUBJECT TO INDIVIDUAL APPLICATION

CONSTRUCTIONS OF RTJ’S

TYPE
NOMINAL PIPE SIZE
CLASS RATINGS
Type R Oval & Octagonal ½” to 24” 150 to 2500 ASME B16.20
26” to 36” 300 to 900 ASME B16.20 A
1½” to 20” API 6A
Type RX 1½” to 24” 720 to 5000 ASME B16.20
26” to 36” 300 to 900 ASME B16.20 A
1½” to 20” API 6A
Type BX 1.11/16” to 21¼” 5000 to 20000 ASME B16.20
MATERIAL
BRINELL HARDNESS
TEMPERATURE LIMITATION
IDENTIFICATION
Soft Iron 90 -60°C to +500°C D
Low Carbon Steel 120 -40°C to +500°C S
4-6% CR ½”% Mo 130 -250°C to +500°C F5
304 Stainless Steel 160 -250°C to +550°C S304
316L Stainless Steel 160 -110°C to +550°C S316
321 Stainless Steel 160 -250°C to +550°C S321
347 Stainless Stee 160 -250°C to +550°C S347
410 170 -20°C to +500°C S410
Monel (N04400) 135 +450°C N04400
UNS N08904 135 +450°C 904L
Inconel 625 +450°C 625
Incoloy 825 +450°C 825
Hastelloy C-276 +450°C C-276
Titanium +450°C TI