Products - Sealing Gaskets

Keywords: API Octagonal ring joint gasket

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API Octagonal ring joint gasket mainly machined from solid metal in Octagonal shapes with high quality numerical control machines. it has a higher sealing efficiency than the oval and would be the preferred gasket. it is designed for high pressure and temperature or high corrosive applications by selecting the suitable shape and material.Dimensions for standard ring joint gaskets and grooves are covered in ASME B16.20 and API 6A, API 17D and ASME B16.5/B16.20.
 

Material Service Limit:

Metal material
Ring type
Max hardness
Temp
Soft iron
D
90 HB
-60°C~+500°C
Low carbon steel
S
120 HB
-40°C~+500°C
5Cr1/2Mo
F5
130 HB
-40°C~+650°C
Stainless steel 304(L), 321
S304(L), S321
160 HB
-250°C~+550°C
Stainless steel 316(L)
S316(L)
160 HB
-100°C~+550°C
Stainless steel 347
S347
160 HB
-250°C~+550°C

Gaskets made of soft iron or low carbon materials are normally applied with anticorrosive oil in final production.
Zinc plating is also available on customer's special request but with a higher cost.
Standard sizes are stocked in Soft Iron, ANSI304,ANSI347,ANSI316,Low Carbon.

Our ring joint gaskets are manufactured in accordance with relevant standards (such as ASME B16.20 API 6A, etc)
to suit different flange applications (such as ASME B16.5, ASME B16.47 Series A, API 6B, API 6BX, etc).
 If you need detailed information for the products pls contact us, we will send a prompt response(generally in 24 hours).  

 

 www.nbseals.com/products/Sealing-Gaskets/API-Octagonal-ring-joint-gasket-.html