Outer ring(CGType) metal spiral wound gaske
The outer ring type metal spiral wound gasket is a type of gasket widely used in the field of industrial sealing. Its structure and performance design enable it to perform well under high temperature, high pressure and complex working conditions. The following is a detailed description of its uses and performance:
1. Applicable fields
* Petrochemical industry: used for high temperature and high pressure equipment such as reactors, heat exchangers, and pipe flanges.
* Power industry: Sealing of steam systems such as boilers and steam turbines.
* Nuclear industry: radiation and corrosion resistant scenarios.
* Oil refining and natural gas: flange connection seals for pipelines, valves, and pumps.
* Chemical industry: Sealing of highly corrosive media (adaptable materials required).
2. Applicable flange types
Mainly used for flat flange (FF) or raised face flange (RF), the outer ring design helps positioning and prevents installation deviation.
3. Applicable working conditions
* High temperature: long-term working temperature can reach 700°C (depending on the material).
* High pressure: the withstand pressure is usually more than 20MPa.
* Alternating load: suitable for scenes with frequent temperature or pressure fluctuations.
4.Performance characteristics
* Multi-layer sealing structure:Metal belts (such as 304/316 stainless steel, titanium alloy)** and non-metallic filling materials (graphite, PTFE, mica) are alternately wound, combining elasticity and strength. The outer ring (positioning ring) is usually made of the same material as the metal belt, providing mechanical support, preventing the winding layer from loosening, and simplifying installation and positioning.
* Excellent sealing:The combination of metal and non-metallic materials realizes "soft-hard" double sealing, which can adapt to small defects on the flange surface. High compression rebound rate (up to 40% or more when graphite is filled). compensating for flange deformation.
5. Installation points:
Control the bolt preload to avoid excessive compression that may cause the filling layer to fail. Check the flange surface roughness (usually Ra≤3.2μm) to ensure that the sealing surface is flat.
The outer ring type metal spiral wound gasket combines metal strength and non-metallic elasticity to provide reliable sealing under harsh working conditions. Its outer ring design further improves the installation accuracy and resistance to working condition fluctuations, making it the preferred solution for high temperature and high pressure flange connections. When selecting, it is necessary to comprehensively consider the media characteristics, flange type and operating conditions to ensure the best sealing effect and service life.
| Construction |
Flange |
Hoop material |
Filler |
Inner& Outer Material |
Size(mm) |
Thickness(mm) |
| Material |
Code |
V |
W |
| R/G Basic type |
Tongue and Groove |
304
304L
316
316L
321
Alloy 825
Monel 400
Inconel 625
S32750 |
Asbestos
Graphite
PTFE
Non-asbestos |
ASB
FG
PTFE
NACF |
Carbon steel
304(L)
321
316(L)
Alloy 825
Monel 400
Inconel 625
S 32750 |
16-3500 |
3.2
4.5 |
4.8
5.5
7.5 |
| With outer ring |
Raised face Flat face |
| With inner ring |
Male and Female |
| Inner& Outer ring |
Raised face Flat face |
| For heat exchanger |
Heat exchanger |
Cangzhou Shengxin Sealing Materials Co., Ltd. is located in Cangzhou City, Hebei Province, China, the world-famous "hometown of martial arts" and "capital of flange elbows". The company was established in 1985 and was formerly known as Cangxian Litong Sealing Products Factory. It has a history of more than 30 years of producing rubber products. After years of careful cultivation, the factory expanded its business scope in 1997 and added chemical sealing products such as metal spiral wound gaskets, asbestos gaskets, PTFE gaskets, graphite coated gaskets, toothed gaskets, heat exchanger gaskets, stainless steel ring gaskets, and packings. The company always adheres to the corporate spirit of "unity, endeavor, integrity, and innovation". With first-class product quality, good corporate reputation, and thoughtful and enthusiastic service, we welcome new and old customers at home and abroad to visit and negotiate business.
FAQ:
1. Are you a trading company or manufacturer?
A: We are a manufacturer with more than 30 years of production experience and have our own factory in Hebei.
2. Can you provide OEM or ODM service?
A: Yes, welcome.
3. Can you send me a sample? For free?
A: Yes, the sample is free, but the express fee should be on your side.
4. Is there any discount on the price you offer me?
A: The discounted price depends on the order quantity.
5. What are your payment terms?
A: 30% as deposit, 70% before delivery. Before you pay the balance,
We will show you the photos of the products and packages.
6. How about the delivery time?
A: Usually 15-30 days after receiving the 30% deposit. Samples are ready within 3 days.
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