Oval ASME B16.20 R20 Seal Ring Gasket
|Carbon Steel||Gasket||Stainless Steel||Seal|
|Metal||Seals Ring||Soft Iron||Gasket|
R20 seal ring gasket,
ASME B16.20 RTJ gasket types,
R20 ring type gasket
The Ring Type Joint Gasket is initially developed for high pressure/ temperature applications found in the petroleum industry and is primarily used in the oilfield on drilling and completion equipment.
However, today this product range can also be found on valves and pipe work assemblies, along with some high integrity pressure vessel joints.
Style R gaskets are manufactured in accordance with both API 6A and ASME B16.20 to suit API 6B and ASME/ANSI B16.5 flanges. Available in both oval and octagonal configurations, both types are interchangeable on modern octagonal type grooved flanges.
Pressure: 2,000-5,000 PSI
We can offer more than 30 kinds of materials, such as 321SS, 347SS, 316SS, 304SS, Inconel 625, Monel 400, INCOLY 825, Nickel 200, Duplex F44, soft iron, low carbon steel and so on. We have over 10 years experience in export business. Our products are sold to Southeast Asia, Middle East, Europe and America and well appreciated by our clients.
Oval cross-section Industry Ring Joint Gaskets and Octagonal cross section Ring Joint Gaskets are used in pressures up to 10,000 psi
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.
We stock a wide range of sizes and materials ready for immediate shipment from Ring Numbers R11 to R105.
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.
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 maximum,
· R, RX – 63 microinches Ra (1.6 micrometer Ra).
Thus Gasket supplies ring joint gaskets (RTJ Gasket) with the hardness numbers as follows:
BRINELL HARDNESS NUMBER (max)
ROCKWELL HARDNESS NUMBER (max)
|Low carbon steel||120||68||S|
|4-6% Chrome 1/2% molybdenum||130||72||F5|
|304 Stainless Steel||160||83||S304|
|316 Stainless Steel||160||83||S316|
|347 Stainless Steel||160||83||S347|
|Material||Identification||Material No.||Hardness||Temperature (oC)|
|Low Carbon Steel||S||–||120||-40||500|
|Stainless Steel 304||304SS||1.4301||160||-250||550|
|Stainless Steel 304L||304L SS||1.4306||160||-250||550|
|Stainless Steel 316||316SS||1.4401||160||-100||550|
|Stainless Steel 316L||316L SS||1.4404||160||-100||550|
|Stainless Steel 321||321SS||1.4541||160||-250||550|
|Stainless Steel 347||347SS||1.4450||160||-250||500|
|Stainless Steel 410||410SS||1.4000||170||-20||850|
Marking and Identification (standard):
The outer surface of each Ring Type Joint should show the manufacturer’s name or a trademark, the gasket number like R67, RX37 or BX155, gasket’s material in abbreviation(check below our chart), as well as the standards like ASME B16.20, API 6A, API 17D, etc.