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The KN rubber-steel gasket 9107/KN consists of a metal support ring and a speciallymolded, replaceable elastomer ring which is located in the force shunt after fitting. The support ring also acts as a centering ring and force limiter. It thus both absorbs the bolt forces needed for high pressures and protects the rubber seal against overcompression.
Advantages
The outer ring (EPDM) can be reused after replacement
Uniform distribution of the surface pressure
Operating range
Pressure: p = 64 bar
Temperature
Continuous operation:
t = –30 °C ... +120 °C
a few hours:
t = –30 °C ... +150 °C
a few minutes:
t = –30 °C ... +200 °C
Recommended surface roughness:
RZ ≤ 100 µm
Load values (q) elastomer seal
The surface pressure acting in the flange block position is:
at room temperature:
qmax. = approx. 10 MPa
at 100 °C:
qmax. = approx. 6 MPa
Materials
Sealing ring: EPDM
Support ring: St 37 galvanized, chromated or stainless steel
Recommended applications
Industries
Power plant technology
Water and waste water technology
Building services engineering
Flange connections
Pipe connections
Notes
With coated flanges, we recommend selecting the outer diameter of the coating so that the sealing lip on the atmospheric side lies in the steel part. If necessary, discuss the dimensions with your EagleBurgmann contact.
Forms of supply
Standard dimensions as defined in the EagleBurgmann in-house standard for DIN flanges or for flanges to ANSI B16.5 and MSS SP-4.4
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