Where there is a possibility of super cooled fluid or gas leaking onto a fire-resistant penetration, you need a fire barrier that can withstand the sudden freezing to minus 186 degrees Celsius.
The barrier may be subject to these negative temperatures for one hour before rapidly thawing in event of fire.
We have seen unprotected steelwork shatter under the thermal stresses of cryogenic freeze and thaw.
All parts of our pipe penetration seal system have been tested for 1 hour under cryogenic spray, then after warming been subject to an ISO 22899 jet fire test to prove our products suitability.
If you need the security of a fire seal to resist more than fire, the MCL fire seal will exceed your expectation.