NEW

Flange Gasket materials – What you need to know

Getting the most out of flange gasket materials and ensuring the performance of the gasket is not affected when you come to use it, means several things must be taken into consideration.  For example, factors such as their design, how they’re manufactured,...

Spiral Wound Gaskets and Sheet Gaskets

Gaskets come in a range of different shapes and sizes.  All are offering similar functionality; gaskets are produced using a range of different materials to suit a range and a variety of environmental factors, industrial uses, and product requirements.  When it...

Benefits of Kammprofile Gaskets

Used to prevent leakage, gaskets are constructed to fit between a range of different sizes and types of surfaces in order to provide the perfect seal.  Typically used in pipes and heat exchangers, gaskets are widely used as industrial sealants. ...

Purpose of a Kammprofile Gasket

The ultimate purpose of a gasket is to stop leaks while being able to deal with varying levels of compression.  When it comes to Kammprofile gaskets, these are ideal for standard pipeline and heat exchanger applications.  As due to their grooved metalcore, with a...

Are your gaskets completely compliant?

In industries where gaskets are not just important but essential, there are numerous challenges to be faced and considerations to take on board.  This is especially true when it comes to making sure this “essential” element is also compliant.  With the...

Everything you need to know about Manway Gaskets

When it comes to manway gaskets, we want to keep things simple, introducing them as the small sealing ring found in hatches/openings that are constructed for large tanks. Openings which give people access to the inside of the aforementioned tanks and vessels. The...

Why Colour Matters When Choosing Gaskets?

Gasket manufacturers have turned to colour coding gaskets to make the selection and categorisation of the product more accessible.   It is possible to identify the winding and filler materials that were used for fabrication by the colouring of the outer top side...

Choosing the Perfect Gasket for Your Needs

The perfect gasket choice and fit is an essential component of engines, appliances, and industrial machinery projects. They are a fundamental part when engineering anything from power tools to oil drills. A high-quality manufacturer of gaskets and seals will use...

How Do You Recognise a Quality Gasket?

A gasket is a very simple item that is reasonably inexpensive. Considering how gaskets work, you may be facing a costly bill should a gasket fail. Choosing a quality gasket from Specialist Sealing Products helps to create a seal that will last until well after the...

5 Common Gasket Failures

Common Failure Causes  A blown head gasket in a vehicle is something that needs to be fixed promptly. If left untouched, you run the risk of seriously damaging your engine. Knowing what causes gasket failure or gasket problems is the key to gasket failure...

Quality Ring Type Joints (RTJs)

Ring Type Joint (RTJ) Gaskets are precision machined, from a wide range of materials, determined by service conditions, and are suitable for high temperature and high pressure applications. 

General Market Sector Industry’s  include; 

Oil and Gas, Petrochemical, Petroleum Oil Field Drilling Equipment and Offshore Sub-Sea applications 

They come in a variety of shapes and sizes and are labelled as ‘Styles’.  Type R  – Oval, Type R – Octagonal, Type RX and Type BX complete the standard range of ‘Styles’ and are manufactured in accordance to API 6A, API 17D, ASME B16.20 or to customer specific requirements 

Quality Ring Type Joints (RTJs)

STYLE R

These are manufactured in accordance with API  6A for heavy duty use in the Petroleum industry  particularly in oil field drilling equipment. Both types are interchangeable on octagonal type grooved flanges 

Ring Type Joints Style R Oval
Ring Type Joints Style R Octagonal
RX Ring Type Joint Drawing

STYLE RX

Suitable for ASME B16.5 Flanges up to 2500 LBS and API 6A type 6B Flanges can withstand pressures up to 5,000 psi. The RX Style is based upon the standard Style R, and will fit the same groove, but becomes energised when the assembly is pressurised thus improving the efficiency of the seal. 

STYLE BX 

BX Gaskets are manufactured in accordance with ASME B16.20, API 6A and API  17D, a variant specifically for subsea applications. They are machined in a symmetrical shape ensuring flange face to face contact on both the inner and outer diameters and incorporate a pressure hole to give energized sealing up to 20,000 psi.

BX Ring Type Joint Drawing

The gasket material should be selected and determined to suit the service conditions. It is always recommended that the gasket material should be approximately 30 Brinell softer than the mating flange material to ensure sufficient deformation of the gasket, thus providing subsequent sealing force. 

The more common materials used are as stated in the table below  

Material Reference Table
MATERIAL IDENTIFICATION MAXIMUM HARDNESS (BHN)
Soft Iron D 90
Low Carbon Steel S 120
F5 (4-6% Chrome – 1/2% Moly) F5 130
SS 304 S304 160
SS 316 S316 160
SS 321 S321 160
SS 347 S347 160
SS 410 S410 170
Alloy 600 N06600 200
Alloy 625 N06625 200
Alloy 800 N08800 200
Alloy 825 N08825 200
Hastelloy C-276 N10276 200
Duplex 31254 S31254 180
Duplex 31803 S31803 250
Monel 400 N04400 200
Titanium R50400 215
Type R Oval and Octagonal Ring Type Joint Gasket Dimensions In Accordance to ASME B16.20 / API 6A
ASME B16.5 FLANGES / ASME B16.20API 6B FLANGES / API 6A (psi)PCDWIDTHRING HEIGHT
Ring No.1503/60090015002500200030005000(mm)(mm)OVAL (mm)OCT (mm)
R11½”34.146.3511.29.7
R12½”½”39.77.9514.212.7
R13¾”½”42.887.9514.212.7
R14¾”¾”44.457.9514.212.7
R151”47.637.9514.212.7
R161”1”1”34”1”1”1”50.87.9514.212.7
R171.1/4”57.157.9514.212.7
R181.1/4”1.1/4”1.1/4”1”1.1/4”1.1/4”1.1/4”60.337.9514.212.7
R191.1/2”65.17.9514.212.7
R201.1/2”1.1/2”1.1/2”1.1/2”1.1/2”68.287.9514.212.7
R211.1/4”72.2411.1317.516
R222”82.557.9514.212.7
R232”1.1/2”2.1/16”82.5511.1317.516
R242”2”2.1/16”2.1/16”95.2511.1317.516
R252.1/2”101.67.9514.212.7
R262.1/2”2”2.9/16”101.611.1317.516
R272.1/2”2.1/2”2.9/16”2.9/16”107.9511.1317.516
R282.1//2”111.1312.719.117.5
R293”114.37.9514.212.7
R303”117.4811.1317.516
R313”3”3.1/8”3.1/8”123.8311.1317.516
R323”12712.719.117.5
R333.1/2”131.787.9514.212.7
R343.1/2”131.7811.1317.516
R353”3.1/8”136.5311.1317.516
R364”149.237.9514.212.7
R374”4”4.1/16”4.1/16”3.1/2”149.2311.1317.516
R384”157.1815.8822.420.6
R394”4.1/16”161.9311.1317.516
R405”171.457.9514.212.7
R415”5”5.1/8”5.1/8”180.9811.1317.516
R425”190.519.0525.423.9
R436”193.687.9514.312.7
R445”5.1/8”193.6811.1317.516
R456”6”7.1/16”7.1/16”211.1511.1317.516
R466”7.1/16”211.1512.719.0517.5
R476”228.619.0525.423.9
R488”247.657.9514.312.7
R498”8”9”9”269.8811.1317.516
R508”9”269.8815.8822.2220.6
R518”279.422.2328.626.9
R5210”304.87.9514.312.7
R5310”10”11”11”323.8511.1317.516
R5410”11”323.8515.8822.2220.6
R5510”342.928.5836.5135.1
R5612”3817.9514.312.7
R5712”12”13.5/8”13.5/8”38111.1317.516
R5812”38122.2328.626.9
R5914”396.887.9514.512.7
R6012”406.431.7539.738.1
R6114”14”14”419.111.1317.516
R6214”419.115.8822.2220.6
R6314”419.125.433.3331.8
R6416”454.037.9514.212.7
R6516”16.3/4”16.3/4”469.911.1317.516
R6616”469.915.8822.420.6
R67 16” 469.90 28.58 36.60 35.10 
R68 18” 517.53 7.95 14.20 12.70 
R69 18” 18” 533.40 11.13. 17.50 16.00 
R70 18” 18” 533.40 19.05 25.40 23.90 
R71 18” 533.40 28.58 36.60 35.10 
R72 20” 558.80 7.95 14.20 12.70 
R73 20” 20.3/4” 584.20 12.70 19.10 17.50 
R74 20” 20.3/4” 584.20 19.05 25.40 23.90 
R75 20” 584.20 31.75 39.60 38.10 
R76 24” 673.10 7.95 14.2 12.7 
R77 24” 692.15 15.88 22.4 20.6 
R78 24” 692.15 25.40 33.30 31.80 
R79 24” 692.15 34.93 44.50 41.40 
R80 22” 615.95 7.95 14.29 12.70 
R81 22” 635.00 14.30 20.64 19.10 
R93 26” 749.30 19.05 25.40 23.90 
R94 28” 800.10 19.05 25.40 23.90 
R95 30” 857.25 19.05 25.40 23.90 
R96 32” 914.40 22.23 28.58 26.90 
R97 34” 965.20 22.23 28.58 26.90 
R98 36” 1022.35 22.23 28.58 26.90 
R99 8” 8” 234.95 11.13 17.46 16.00 
R100 26” 749.30 28.58 36.51 35.10 
R101 28” 800.10 31.75 39.68 38.10 
R102 30” 857.25 31.75 39.68 38.10 
R103 32” 914.40 31.75 39.68 38.10 
R104 34” 965.20 34.93 44.45 41.40 
R105 36” 1022.35 34.93 44.45 41.40 
RX Ring Type Joint Gasket Dimensions In accordance to ASME B16.20 / API 6A
API 6B FLANGES / API 6A (psi) OD HEIGHT WIDTH 
RING NO 2000 3000 5000 (mm) (mm) (mm) 
RX20 1.1/2” 1.1/2” 1.1/2” 76.20 19.05 8.40 
RX23 2” 93.27 25.40 11.91 
RX24 2” 2” 105.97 25.40 11.91 
RX25 3.1/8” 109.55 19.05 8.74 
RX26 2.1/2” 111.91 25.40 11.91 
RX27 2.1/2” 2.1/2” 118.26 25.40 11.91 
RX31 3” 3” 134.54 25.40 11.91 
RX35 3” 147.24 25.40 11.91 
RX37 4” 4” 159.94 25.40 11.91 
RX39 4” 172.64 25.40 11.91 
RX41 5” 5” 191.69 25.40 11.91 
RX44 5” 204.39 25.40 11.91 
RX45 6” 6” 221.84 25.40 11.91 
RX46 6” 222.25 28.58 13.49 
RX47 8” 246.26 41.28 19.84 
RX49 8” 8” 280.59 25.40 11.91 
RX50 8” 293.36 31.75 16.66 
RX53 10” 10” 334.57 25.40 11.91 
RX54 10” 337.34 31.75 16.66 
RX57 12” 12” 391.72 25.40 11.91 
RX63 14” 441.73 50.80 27.00 
RX65 16” 480.62 25.40 11.91 
RX66 16” 457.99 31.75 16.66 
RX69 18” 544.12 25.40 11.91 
RX70 18” 550.06 41.28 19.84 
RX73 20” 596.11 31.75 13.49 
RX74 20” 600.86 41.28 19.84 
RX99 8” 8” 245.67 25.40 11.91 
RX201 1.3/8” 51.46 11.30 5.74 
RX205 1.13/16” 62.31 11.10 5.56 
RX210 2.9/16” 97.64 19.05 9.53 
RX215 4.1/16” 140.89 25.40 11.91
BX Ring Type Joint Gasket Dimensions In accordance to ASME B16.20 / API 6A
API 6B FLANGES / API 6A (psi) OD HEIGHT WIDTH HOLE SIZE 
RING NO 2000 3000 5000 10000 15000 20000 (mm) (mm) (mm) (mm) 
BX150 1.11/16” 1.11/16” 72.19 9.30 9.30 1.5 
BX151 1.13/16” 1.13/16” 1.13/16” 76.40 9.63 9.63 1.5 
BX152 2.1/16” 2.1/16” 2.1/16” 84.68 10.24 10.24 1.5 
BX153 2.9/16” 2.9/16” 2.9/16” 100.94 11.38 11.38 1.5 
BX154 3.1/16” 3.1/16” 3.1/16” 116.84 12.40 12.40 1.5 
BX155 4.1/16” 4.1/16” 4.1/16” 147.96 14.22 14.22 1.5 
BX156 7.1/16” 7.1/16” 7.1/16” 237.92 18.62 18.62 3.0 
BX157 9” 9” 9” 294.46 20.98 20.98 3.0 
BX158 11” 11” 11” 352.04 23.14 23.14 3.0 
BX159 13.5/8” 13.5/8” 13.5/8” 426.72 25.70 25.70 3.0 
BX160 13.5/8” 402.59 23.83 13.74 3.0 
BX161 16.3/4” 491.41 28.07 16.21 3.0 
BX162 16.3/4” 16.3/4” 475.49 14.22 14.22 1.5 
BX163 18.3/4” 556.16 30.10 17.37 3.0 
BX164 18.3/4” 18.3/4” 570.56 30.10 24.59 3.0 
BX165 21.1/4” 624.71 32.03 18.49 3.0 
BX166 21.1/4” 640.03 32.03 26.14 3.0 
BX167 26.3/4” 759.36 35.86 13.11 1.5 
BX168 26.3/4” 765.25 35.86 16.05 1.5 
BX169 5.1/8” 173.51 15.85 12.93 1.5 
BX170 6.5/8” 6.5/8” 218.03 14.22 14.22 1.5 
BX171 8.9/16” 8.9/16” 267.44 14.22 14.22 1.5 
BX172 11.5/32” 11.5/32” 333.07 14.22 14.22 1.5 
BX303 30” 30” 852.75 37.95 16.97 1.5  

Callback Request