PRODUCT DESCRIPTION
Our company has been certified by ISO 9001:2008 and SGS standard. we provides superior products and best service to the customers by bringing in advanced
CNC machines, sawing machines, spectrograph, desktop hardness, laser marking machine, coating thickness gauge and other equipments.
We specializes in ring joint gasket, including ring gasket in R, RX, BX, IX types, lens gasket, weld ring gasket and bonnet gasket(according to client's drawing). The metal gasket designed for use in high pressure, high temperature application necessitated the need for a high integrity seal. Our products are widely used in flat gate valve, Christmas tree, pipeline fittings, flange, high pressure vessel, oil &gas industry, wellhead assembly, petrochemical industry and the like.
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 could produce the maximum outside diameter is 2500mm. 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.
We Manufacture and supply high quality Ring joint Gaskets for high pressure and temperature service conditions. These gaskets are widely used in Refineries, Petrochemical Industries, Oil drilling well head equipments, Pressure Vessels, valves, Christmas Tree valves and Pipe lines. Ring joints Gasket are strictly manufactured as per API-6A and ASME B16.20 specification.
'R' Type
octagonal/oval
We manufacture from R 11 through R 105 to suit the following flange specifications:
The Octagonal cross section Ring Joint is the development oval cross section and offers a better sealing performance. Only oval cross section gaskets can be used when the flange grooves are with the round bottom. Both Octagonal and oval cross sectioned gaskets can be used when the grooves of the flange are having a flat bottom.
we supplies ring joint gaskets (RTJ Gasket) with the hardness numbers as follows:
GASKET MATERIALS
BRINELL HARDNESS NUMBER (max)
ROCKWELL HARDNESS NUMBER (max)
IDENTIFICATION
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
Common Materials
Material
HB Hardness
Temperature Limitations
Identification
Soft Iron
90
-60 to +400 °C
D
Low carbon steel
120
-40 to +500°C
S
4%-6% Cr ½% Mo:F5
130
-125 to +500°C
F5
Stainless steel 304/304L
160
-250 to +650°C
S304 or 304L
Stainless steel 316/316L
160
-196 to +800°C
S316 or 316L
Stainless steel 321
160
-250 to +870°C
S321
Stainless steel 347
160
-250 to +870°C
S347
Stainless steel 410
170
-20 to +500°C
S410
Inconel 625
–
1000°C
625
Incoloy 825
–
1000°C
825
Hastelloy C-276
–
1000°C
C-276
Duplex
–
800°C
S31803
Titanium
–
540°C
TI
https://www.ringjoint-gasket.com/octagonal-ring-joint-gasket/