IX SEAL RING

Typical Seal Ring Materials

Typical minimum yield stress and ultimate stress of the seal ring material shall at maximum

design temperature be 300 MPa, respectively, in order to allow for reasonably elastic spring

back

Lower strength may be used, but is not recommended.The user is responsible for

selecting a seal ring material which is suitable for the service medium and the design

temperature conditions. Seal ring materials are commonly chosen to be compatible with

the flange material, I.e. Duplex seal ring in duplex flange.

IX Seal Ring Selection

Coating

IX Seal Rings shall be coated with 10μm to 30μm PTFE coating. The colour of the coating

shall follow the requirement above table.

Surface Finish

All sea rings surfaces shall be machined with maximum surface roughness in accordance

with below table:

How IX Ring Seal Works

IX Seal Ring axial forces are exerted on the taper of the metal seal ring and translated into

a radial sealing force.

Furthermore with increased pre-load,the bevel is closed and face to face contact is achieved

at the outer wedge while most of the bolt pre-load is transferred as compressive forces

between the flange faces at the heel.

There are two independent seals. The first seal is created by application of seal seating

stress at the flange heel. The flange also remains in contact along it`s outer circumference

at the flange faces for all allowable load levels. The main seal is the IX Seal Ring. The seal

ring force is provided by the elastic stored energy in the stressed seal ring. Any hell leakage

will give intemal pressure acting on the seal ring inside intensifying the sealing action. The

design aims at preventing exposure to oxygen and other corrosive agents. Thus, this prevents

corrosion of the flange faces, the stressed length of the bolts and the seal ring.

IX Seal Ring Installation

Size & Weight

The IX Rings only have one dimension per DN (Nominal Diameter) that covers all the pressure classes

Features

>Size form 10mm to 1700mm currently in service;

>IX seal ring can be at high temperatures. Maximum service temperature being limited by the seal material selected. Materials range from carbon and alloy steel through to inconel, with a range of coating for lubrication;

>The sealing system is extremely leak tight under the most severe conditions of pressure, temperature, vacuum, and is suitable for nuclear applications;

>Cold quench conditions and thermal cycling are the cause of most leakage problems where conventional compressible type joints and seal materials are used. The additional flexibility of the IX Seal Ring ensures a tight seal during thermal transient conditions;

>compact and lighter flange designs can usually be achieved by using IX Seal Rings. Fluid seal areas and joint loads are lower when compared with conventional compressible type joints;/p>

>The all IX Seal Ring is elastic in design and on dismantling reverts to its original form ready for re-use. All seals of a given size are interchangeable without any pre-fitting.