The Style BX ring type joint is manufactured in accordance with API
All BX ring type joints incorporate a pressure passage hole to
allow for pressure equalization each side of the sealing faces. On
assembly, metal to metal contact of the flange faces is achieved.
The Style BX is not interchangeable with any other style, and is
only suited for API 6BX flanges. Style BX ring type joints are
designed to seal pressure up to 20,000 PSI (1,360 bar) in
accordance with API 6A pressure ratings.
Designs are also available for Subsea applications.
|PRESSLURE ALASSES, API 6BX|
for APL 66x flanges
|Bx150||-||-||-||1 11/16||1 11/16||-||72.19||9.30||9.30||1.59||0.295|
|Bx151||-||-||-||1 13/16||1 13/16||1 13/16||76.40||9.63||9.63||1.59||0.337|
|Bx152||-||-||-||2 1/16||2 1/16||2 1/16||84.68||10.24||10.24||1.59||0.425|
|Bx153||-||-||-||2 9/16||2 9/16||2 9/16||100.94||11.38||11.38||1.59||0.632|
|Bx154||-||-||-||3 1/16||3 1/16||3 1/16||116.84||12.40||12.40||1.59*||0.875|
|Bx155||-||-||-||4 1/16||4 1/16||4 1/16||147.96||14.22||14.22||1.59||1.22|
|Bx156||-||-||-||7 1/16||7 1/16||7 1/16||237.92||18.62||18.62||3.18||4.14|
|Bx159||-||-||-||13 5/8||13 5/8||13 5/8||426.72||25.70||25.70||3.18||14.41|
|Bx162||-||-||16 3/4||16 3/4||16 3/4||-||475.49||14.22||14.22||1.59||-|
|Bx164||-||-||-||18 3/4||18 3/4||-||570.56||30.10||24.59||3.18||-|
|Bx170||-||-||-||6 5/8||6 5/8||-||218.03||14.22||14.22||1.59||-|
|Bx171||-||-||-||8 9/16||8 9/16||-||267.44||14.22||14.22||1.59||-|
|Bx172||-||-||-||11 5/32||11 5/32||-||333.07||14.22||14.22||1.59||-|
Styles SRX and SBX are derived from Styles RX and BX, and are
produced in line with the API Standard 17 D for use on subsea
wellhead and Christmas tree equipment.
SEALS RING GASKET high pressure and high-temperature according to
API 6a asme16.20.
We has more than 200,000 standard size ring joint gaskets in stock
and available for immediate shipment. These include all popular
sizes of “R”, “RX”, and “BX” style gaskets. Dan-Loc Group stocked
gaskets include Low Carbon Steel, F5, 304, and 316 materials.
The BX type RTJ gaskets are manufactured in accordance with API 6A
and are suitable for use in high pressure API 6BX flanges. The
gaskets form a metal to metal seal on assembly and the efficiency
improves as internal pressure increases. All BX sizes have a
pressure relief hole to equalize pressure across sealing faces.
Size Range :Available from Ring No. BX150 to RX 162 to suit the following
The API 6A ring gaskets for 6B flanges would be the R & RX
type, and for 6BX flanges, gaskets would be the BX types.
–NB1 11/16″ to 21 1/4″ Class Rating 5000 to 20000 ASME B16.20
» BX Ring gasket Suitable for use on API 6BX Flanges up to Class
» During installation the ring is compressed inwards to provide
additional sealing stress
» Pressure energised; as the internal pressure increases the
sealing force increases
» Type BX rings are supplied with pressure relief holes to avoid
compressing fluid beneath the gasket
» Can be drilled with additional hole to create a gasket suitable
for subsea installation Type “SBX”
As a result of metal to metal sealing media they are made to be
free of indentations, tool marks etc and have a surface finish of
BX – 32 microinches Ra (0.8 micrometer Ra)
Type BX operates in 20,000 psi with non interchangeability. Type BX
has a pressure passage hole for pressure equalization on each
sealing face sides.
The hardness of the ring gasket should always be 30% lesser than
the hardness of the flanges to prevent flange deformation
Dimensions and Tolerances for Ring Joint Gaskets and Grooves are
covered in API 6A and ASME B16.20.
Ring type joint gaskets(RTJs) are designed for high pressure
applications. They are available in a variety of forms to suit
different flange formats . RTJs can be used for very high and/or
fluctuating pressures (up to 1500 bar), depending on the profile
selected. Material selection determines use for high temperatures
(up to i000°C) and in aggressive media. To ensure proper sealing
the surfaces of contact between the gaskets and flange have to be
carefully processed. The small sealing area and high contact
pressure results in excellent sealability.
Dimensions following API Std 6 A for API 6BX-flanges
Additionally: IDT Profile Overview | RJ Series
Because Ring Joint gaskets are used in extreme operating
condi-tions, it is of utmost importance to select the most
suitable, metallic material. In addition to pressure and
temperature, the resistance towards the conveyed media has to be
con¬sidered. The hardness of the gaskets should usually be lower
than that of the flange material in order to prevent mechani¬cal
damage to the flange.
|Material||HB Hardness||Temperature Limitations||Identification|
|Soft Iron||90||-60 to +400 °C||D|
|Low carbon steel||120||-40 to +500°C||S|
|4%-6% Cr ½% Mo:F5||130||-125 to +500°C||F5|
|Stainless steel 304/304L||160||-250 to +650°C||S304 or 304L|
|Stainless steel 316/316L||160||-196 to +800°C||S316 or 316L|
|Stainless steel 321||160||-250 to +870°C||S321|
|Stainless steel 347||160||-250 to +870°C||S347|
|Stainless steel 410||170||-20 to +500°C||S410|
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A:For inner box and master carton are made as per international
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If you have another question, pls feel free to contact us.