Ring Joint Metal Gasket ( RTJ )

RING JOINT (RTJ)

Application • Pipeline applications • High pressure, high integrity applications
Typical Properties:
• Patented design allows the pressurisation of an annular ring within the sealing region to enable a leak-testing programme without pressurising the full pipeline system. • Gasket design is based on a standard RTJ modified to allow pressurisation of
Typical Specifications:
Material :		316
Max. temperature :		450ºC
Max. pressure		>400 bar
Thickness:		Standard RTJ dimensions
Availability:
Manufactured from a range of core materials including soft iron, stainless steels, Also available for raised face flanges.


Type	Nominal Pipe Size			Class Ratings
Type R Oval and Octagonal	1/2” to 24” 26” to 36” 1 1/2” to 20”			300 to 900 ASME B16.20 Series A 150 to 2500 ASME B16.20 API 6A
Type RX	1 1/2” to 24” 26” to 36” 1 1/2” to 20”			720 to 5000 ASME B16.20 300 to 900 ASME B16.20 Series A API 6A
Type BX	1 11/16” to 21 1/4”			5000 to 20000 ASME B16.20

Materials
Material		Brinell Hardness	Temperature Limitation		Identification
Soft iron		90	-60 to +400⁰C		D
Low carbon steel		120	-40 to +500⁰C		S
Stainless steel 304		160	-250 to +650⁰C		S304
Stainless steel 316		160	-110 to +800⁰C		S316