Wenzhou Jingwei Seal Technology Co., Ltd.
Wenzhou Jingwei Seals Technology Co., Ltd.
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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 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.
Ring joint gasket is machined from solid metal in a variety of shapes according to API 6A & ASME B16.20 standards,it’s designed for high pressure ,high temperature or highly corrosive applications by selecting the most suitable material and shape. It is designed to with stand exceptionally high assembly loads over a small area, thus producing high seating stresses.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.
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
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:
| 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 |
| Material | DIN/EN | AISI/ASTM | Identification | Max. Hardness HB [Brinell] |
| X5CrNiMo17-12-2 | 1.4401 | 316 | S316 | 160 |
| X6CrNiNb18-10 | 1.4550 | 347 | S347 | 160 |
| X6CrNiMoTH 7-12-2 | 1.4571 | 316TÌ | S316TI | 160 |
| X2CrNiMo17-12-2 | 1.4404 | 316L | S316 | 160 |
| 12CrMo195 | 1.7362 | A182 | F5 | 130 |
| Soft iron | 1.1003 | Soft iron | D | 90 |
Marking
The marking is done on the outer surface of each gasket.
Manufacturer name and symbol
Identification number with prefixed letters for the design
Material abbreviations
Manufacturer’s specification
Ring Joint Gaskets are suitable for high pressure and high temperature applications. The Joint Gaskets are available in R, RX, BX styles and in oval/octagonal profiles. Sara manufacturers in accordance with specific tolerances on CNC machines.
Ring Joint Gaskets fully comply with the ASME B16.20 standard and the API spec 6A requirements (where applicable).
The units are manufactured in a variety of standard and special materials.