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RING TYPE JOINT GASKETS

Ring type Joint Gaskets are designed to seal by "initial line contact" or wedging action between the mating flange and the gasket. By applying pressure on the seal interface through bolt force, the softer metal of the gasket flows into the imperfections of the harder flange material, creating a very tight and efficient seal.

STANDARD RING JOINTS

Style R (Oval Octagonal )
   
The contact face is in oval shape. It provides a high reliabililty seal. These gaskets are manufactured in accordance to API 6A of ASME B16.20 to suit API613 and ASME/ANSI B16.5 Flanges. Fits the round and flat bottom ring groove flange.
   
Style R ( Octagonal )

More accurate in dimensions and surface finish than oval type because it consists of straight surfaces only. A higher torque load is required to flow the gasket material into imperfections of the flange facings. These gaskets comply with API6A of ASME B-16.20. to suit API 6B and ASME/ANSI B16.5 Flanges Fits only the modern flat bottom groove flange.

   
Style BX

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.

   
Style RX

The RX type RTJ gasket is manufactured in accordance to API 6A and ASME B16.20 to suit API 6B and ASME/ANSI B16.5 flanges. The RX is a pressure energized version of the R octagonal gasket and fits the R type flat bottomed groove. The RX has an increased height and utilizes the internal system pressure to energize and improve the seal as internal pressure increases. Some RX sizes have a pressure relief hole to equalize pressure on both sides of the sealing faces.

   

SPECIAL RING JOINTS

Style IX

The IX-rings are designed and used where the NORSOK CFC (Compact Flange Connections) are in use. The rings come in three different kinds of steel and are coated with PTFE in varying colours in order to distinguish between them.

All markings should be on the inside of the ring.

FLANGE MATERIAL SERVICE TEMPERATURE RING MATERIAL COLOUR
Carbon steel -50 C to +250 C Carbon steel CS360LT or low alloy steels, e.g. AISI 4140 Blue
Stainless steel -50 C to +250 C 22Cr Duplex Yellow
Stainless steel -50 C to +250 C 17/4-PH Orange
Stainless steel -101 C to +250 C Nickel alloys such as Alloy 625 or similar Black

 

DOWNLOAD IX DESIGNATIONS

Style AX

Ring type joints AX are used in H4 hydraulic connections-sub sea production equipments such as BOP or underwater christmas tree.

CARBON STEEL, SOFT IRON MONEL® 400 HASTELLOY B2 & C276
304 316Ti NICKEL 200 COPPER
304L 310 INCONEL® 600,625&x-750 ZIRCONIUM
316 321 INCOLOY® 800 & 825 DUPLEX
316L 3CR12 TITANIUM PTFE(INNER RINGS ONLY)
SIZES

We manufacture Ring type joint gaskets of all sizes and shapes

FLANGE STANDARDS

Ring joint gasket can be manufactured in accordance with all relevant gasket standards and specifications to suit the following flange designations

API 605 (ASME B16.47 SERIES B)
ASME/ANSI B16.5
BS 1560
BS 4504
BS 10
DIN DIN FLANGES
FRENCH NF STANDARD
JIS FLANGES
MSS SP 44 (ASME B16.47 SERIES A)

DOWNLOAD

RTJ DIMENSION CHART
RTJ MATERIAL CHART

 

 
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IGP ENGINEERS PVT LTD
#79, Valmiki Street, Thiruvanmiyur
Chennai - 600 041.
Ph: +91-44-24420608 / 24424804
Fax: +91-44-24405152
Email: igp@vsnl.com
www.igp-group.com/igpengg.html
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