안녕하세요...
당사가 현재 취급중인 메탈오링을 송부하오니 참조바라오며, 궁금한사항은 연락바랍니다. 원자력발전소는 spring energized metallic o-ring을 사용하고 있을것으로 사료됩니다.

하기내용은 현재 영문으로 준비중인 당사 홈페이지의 내용중 일부입니다.
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7. Metallic O-ring

This O-rings are used when elastomers and other non metallic seals will not seal
properly or do not offer the requited reliability for the application, usually as a result of
temperatures, pressures, or the environment. This seals are long lasting seals and unlike
non-metallic seals, they are not subject to failure due to incompatibility with the
environment, out gassing or from deterioration due to age. It is generally fabricated from
tubing. Typical tubing material consists of stainless steel or high temperature alloys such
as Inconel. These materials are frequently used because they offer resilient properties
that enable the seal to "spring Back".
This seals are used as static face type seals and should not be used as a dynamic
seal. While the majority of seals are circular, many seals are produced in rectangular
racetrack and other various shapes and configurations.
Shin Won high performance seals provides superior performance for most internal,
external and axial applications such as:

Pressure : Ultra high vacuum ∼ high pressure 6500 bar
Temperature : - 252℃ ∼ high temperature 1100℃

Because of these capabilities, Shin Won high performance seals are widely used in
critical and demanding applications, including :
- Missile & Space systems Nuclear Reactor & Waste containment systems
- Jet engines, Controls, & Instruments Diesel engines
- High temperature Aircraft systems, Chemical, Petrochemical processing systems

Material
Metal O-Ring are produced of metal tube and solid wire material. The material is shaped
and welded to rings or other figurations. The O-Ring consists of stainless steel304, 316,
321(-252℃~+260℃), inconel 600(+260℃~+430℃), inconel X-750(+430℃~+980℃) and
electroplated with indium(80℃), PTFE(220℃), copper(500℃), silver(800℃), gold(850℃),
nickel(980℃).

O-Ring size and Groove dimensions

* groove O.D. : for internal pressure, B is max. outside dia.(mm)
* groove I. D. : for external pressure, A is min. inside dia.(mm)

Surface finish
- Ra = 0.4 ㎛, N5 : for uncoated O-Ring
- Ra = 0.8 ~ 2.54 ㎛, N6 ~ N8 : for coated O-Ring
- Ra = 0.4 ㎛, N5 : for gases, vacuum, liquids of low viscosity, water
- Ra = 0.8 ㎛, N5 : for medium

Metal Boss Seal
1) Application
Advancements in Aerospace performance has resulted in increased engine temperature
for longer distances and at higher altitudes. These demand hydraulic systems that are
more reliable while operating at higher pressure. Leakage and loss of pressure caused by
the degradation of elastomeric or polymer based seals are a problem and the primary
reasons for failure in hydraulic systems. The Boss seal is designed to handle high
pressures and temperature for long service cycles.

2) Material
Boss seals are produced from the high temperature alloy X750 (AMS 5598). A soft on
the seal is highly recommended to eliminate galling and fretting between the seal and
metallic mating components. Silver plating to the AMS 2410 specification with a thickness
of .0025mm is recommended.

3) Other plating and coating ; Copper, Gold, Soft Nickel, PTFE

4) The Boss seal specifications
Materials : Alloy X750(AMS 5598) Silver (AMS 2410)
Temperature range : -55℃ ∼ +650℃
Pressure : Up to 650 bar

5) Features
Pressure energized for enhanced sealing
Metallic insert captures seal and ensures proper alignment









Metallic C-Ring
Pressure fluctuations and heat are constant concerns for designers of aircraft engines,
valves, pressure transducers exhaust manifolds and fuel injectors. A combination of these
two factors can result in premature failure or short seal life. C-ring seals can help
overcome both heat and pressure pulsating sealing problems. Key to the seal`s
performance is the high spring back characteristic due to the C-shaped construction.
These highly resilient seals can be used for internal, external and axial pressure under
extreme conditions that preclude the use of gaskets made of organic materials. This
uniquely fabricated seal configuration is capable of producing relatively high levels of
spring back. The compression of the seal in a controlled groove or between two radial
interfaces, produces a counter load, generating an effective sealing action that is ideal for
these special application.

2) Basic Design Characteristics
C-ring seals will undergo plastic deformation when installed at the 20% recommended
compression. These C-ring seals may be reusable in their original cavities or in cavities
that are nearly the same depth as the original. C-ring seals have much lower initial
flange load requirements than O-rings. However, it is still high enough to provide effective
smearing of the plating or coating used on the sealing surfaces. Deflection capability is
excellent and it is normally assumed to be about half of the spring back, however, this is
a function of the operating conditions and the required leakage rate.

3) Determining factors in seal selection
In the seal selection process, the designer should always keep in mind the following
rules.
- There is a direct relationship between seal O.D. and free height
- Larger free height always provides a better performing, more consistent seal.

4) The seal selection is a process of optmising design limitation, size, available load,
spring back, design requirements and cost.

5) The most important factors in C-ring seal design are :
- Maximum pressure and direction
- Extreme operating temperature.
- Allowable leakage rate.
- Available flange load.

6) High performance Metallic seal type :
- Internal pressure
- External pressure
- Axial pressure

7) Deflection Capability
We define this as the ability to continue to seal as the flanges separate under pressures.
This function is related to free height, material type, heat treatment and diameter. All
things being equal, the larger the free height the more resilient the seal. More resilient
seals allow for some tolerance on flanges which are out flat and parallel.
8) Material types, platings and Coatings
It can be made of almost any alloy that can be formed. However, because strength and
temperature properties are the primary technical consideration, we produce our seals
primarily from Alloy X750 or 718 materials. Other high temperature alloys are also
available.