BX Ring Type Joint Gasket - Style RTJ 303
The BX ring type joint gasket is actually rectangular in cross
section and tapers in each corner in addition to it has a strain
balance hole to make certain equalization of pressure which might
be trapped in the grooves. BX ring Gaskets have been suitable for
higher pressure ratings starting at 5,000 lbs, and ending with
20,000 lbs. They can just be used in API 6BX flanges. Common sizes
are supplied in low carbon steel, soft iron, SS 304 and SS 316.
The Development of Ring Type Joint gasket
The Ring Type Joint (RTJ) gasket is a forged stainless steel ring
that fits to the machined groove of the ring type joint flange. The
ring type joint gaskets are generally octagonal or oval in
cross-section. RTJ gaskets are likely to be utilized for
high-pressure and high heat range applications. It really is
commonly used in refinery, petrochemical and oil field drilling
industries. The Ring type joint gasket is made as per ASME B16.20.
They are compatible with use with flanges created as per standards
ASME B 16.5, ASME B16.47, and API 6A.
The actual first time to work with ring type joint gasket is from
1920 year, while oval ring type joint gasket began to be used in
the United States around the 1920s. They were firstly used in the
field of boilers and lately used for manhole covers and other
windows in autoclaves. They have gained particular attention in the
petroleum production and refining industries. And then by the
developing of this gasket, the gasket divided into 3 main types. R,
BX, RX type ring type joint gasket.
Style RTJ R
Available in oval and octagonal cross sections. Oval ring type
joint gasket and octagonal ring type joint gasket are actually
interchangeable on modern flat bottom grooved flanges Regular
measurements of Style R gaskets are actually manufactured in
accordance with ASME B16.20 and API 6A specifications
Style RTJ RX
RX ring type joint gasket includes a special self-sealing activity.
The outside bevels of the ring have the original contact giving a
seal resistant to the groove's outer areas. When the inner force
raises, the gasket loads stress and anxiety against the groove to
increase the gasket's sealing features. Style features of the Style
RX gasket make it more resistant to shock load, test pressure shock
and drilling vibration. Style RX ring type joint gasket is
perfectly interchangeable with standard Style R groove designs.
Care and attention should really be applied when interchanging
these varieties as RX ring type joint gasket is higher and will add
more length to the accomplished construction.
Style RTJ BX
Style BX ring type joint gasket possesses a pitch diameter slightly
bigger than the groove pitch diameter. This enables for initial
contact being made on the outside of the ring, pre-loading the
gasket which results in a tension energized seal. BX gaskets
incorporate a tension passing that allows caught tension to balance
itself in the joint. Style BX ring joint gaskets can only be used
with API 6BX flanges and are not interchangeable with Style RX.
And other style types also include SRX, SBX, IX ring type joint
BX Ring Type Joint Gasket Materials
The materials of BX Ring Type Joint Gasket shall match the flanges
material but must have a lower hardness around 15 to 20 HB, this to
ensure that the gasket get plastically deformed within the groove
of the flanges as the two connecting ring type joint flanges are
bolted together. Or if a harder material used for the ring type
joint flange, the groove of the RTJ flange would be damaged as the
flanges are tightened.
The materials can be: Soft iron, SS 304, SS 316, F5, SS 321, SS
347, SS410, Monel 400, Inconel 600, inconel 625, Inconel 625,
Inconel 718, Hastelloy C276 and other metals.