High Pressure R67 API 6A RTJ Ring Joint Gasket

Place of Origin china
Brand Name Wenzhou Jingwei Seal Technology Co., Ltd.
Certification ISO9001
Model Number oval ring joint gasket
Minimum Order Quantity 10
Price Negotiable
Packaging Details Bulk packaged or Customize
Delivery Time 7 work days
Supply Ability 100000pcs/month
Product Details
Carbon Steel Gasket Stainless Steel Seal
Metal Seals Ring Soft Iron Gasket
Temperature -200~800(℃) Delivery In Stock
Standard APi 6a Pressure High Pressure
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API 6A RTJ Ring Joint Gasket


R67 seal ring gasket


R67 ring type flange

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Product Description

API Ring Joint Gaskets manufacturer High Pressure

Metallic ring type joint gaskets are heavy duty, high-pressure gaskets largely used in offshore and onshore petrochemical applications. They are precision-engineered components designed to be used in conjunction with precision-machined flanges. All our Ring Joints are manufactured according to ASME B16.20 and API 6A.


The gasket material is selected on a number of grounds primarily; chemical compatibility with the media and the hardness of the flange. The gasket material ideally needs to be roughly 30 Brinell less than the flange material to ensure sufficient deformation of the gasket without damaging the flange facing.


Worn, pitted or corroded flange sealing surfaces can impede the sealing ability of RTJ gaskets. In such instances, a serrated octagonal RTJ gasket, covered with flexible graphite, can provide a temporary or emergency solution until the flange can be repaired or replaced.

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.


Gasket type Ring joint gasket standard Flange standard
Oval ASME B 16.20 API 6A ANSI B 16.5 ASME B16.47, SERIES A
Octagonal ASME B 16.20 API 6A ANSI B 16.5 ASME B16.47, SERIES A
RX ASME B 16.20 API 6A API 6 B


Primary features:

1. Resistance to high temperature and pressure, suitable for high pressure flange

2. Excellent temperature resistance. Permanent temperature range -200℃to +550℃

3. Very high operating pressure limits (320 bar)

4. Good chemical resistance

5. High-grade, reinforced and blow out safe gasket as per UW (Healty and safety at Work Act), high operating safe

6. Very low leakage rate, meets TA-LUFT requirement

7. No ageing, no embitterment, even at high temperature

8. Asbestos-free, physiologically harmless, disposal with domestic waste

9. Good handling during transport, installation and removal. Mechanically stable, scratch-resistant


Related products:

ASME B16.20 Ring Joint Gaskets, API 6A Ring Joint Gaskets, API 17D Ring Joint Gaskets, Non-standard Ring Joint Gaskets

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.


High Pressure R67 API 6A RTJ Ring Joint Gasket 0High Pressure R67 API 6A RTJ Ring Joint Gasket 1

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:





Soft iron 90 56 D
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)
Min Max.
Soft Iron D 90 -40 500
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
Aluminum Al 3.0255 30 -250 300
Copper Cu 2.0090 ca.80 -250 400
Brass CuZn37 2.0321 ca.60 -100 350
Nickel 200 Ni200 2.4066 110 -250 600
Monel 400 400 2.4360 150 -125 600
Inconel 600 600 2.4816 150 -100 950
Hastelloy B2 B2 2.4617 230 -200 450
Titanium Ti 3.7025 ca.215 -250 350

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.



RTJ gaskets are available as standard in soft metal and in 304, 316 and stainless steels. Versions in other materials on request.

Standards and approvals

All RTJ gaskets are manufactured to API standards, guaranteeing consistent quality.

Recommended applications


  • Oil & gas industry
  • Petrochemical industry
  • Flange connections
  • Pipe connections

Functional description

Under axial compressive load, ring type joints plastically deform and flow into the irregularities of the flange groove. Since the contact area of the ring type joint is relatively small, a very high compressive load results between the sealing surface of the ring type joint and the flange groove. This surface pressure is further increased especially by the RX and BX RTJ variants. Both variants are able to seal extremely high internal pressures. RTJ gaskets are produced from metal, so they remain in their compressed form, even when the surface pressure is relaxed. The sealing function of the RTJ gasket is reinforced by the axial forces acting on the sealing surfaces.

Forms of supply

  • Standard dimensions as per DIN EN 12560-5 or ASME B16.20
  • RTJ gaskets are available from stock in ½” to 36” and 15 mm to 900 mm sizes, and in the commonly available materials to suit most ASME and DIN flange dimensions. Larger sizes and special requirements are available to order.High Pressure R67 API 6A RTJ Ring Joint Gasket 2
  • FAQ


    Q: Are you trading company or manufacturer ?

    A: We are a professional production enterprise

    Q: How long is your delivery time?

    A: Generally it is 7-15 days for stock delivery, and 15-30 days for manufacturing goods , but it depands on the quantity.

    Q: Do you provide samples ? is it free or extra ?

    A: Yes, we can provide you sample, but you need to pay for the sample and freight firstly.We will return the fee after you make an order.

    Q: What is your terms of payment ?

    A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.

    Q:How can we trust you to make a guaranteed deal?
    A:We can trade through alibaba credit guarantee orders, which will fully guarantee the effective rights and interests of buyers and sellers.

    Q:Package information?

    A:For inner box and master carton are made as per international standards,and we can make special designed for you if need.


    If you have another question, pls feel free to contact us.