08/02/2019
Gaskets - Do�s and Don�ts
Do�s
a) Check the type, class, size and material specification of the
gasket before using it. Check with the piping specification to
confirm that it is correct. Only use gaskets with non-asbestos
materials.
b) Check the gasket for damage, nicks, etc. Ensure that it is clean
and free from any contaminants before use.
c) Ensure that the gasket fits correctly.
d) Check the fl**ge face-to-face separation once the gasket has
been installed and the bolts tensioned. A uniform separation is
required. If not, the gasket could be locally crushed or deformed
and will not seal properly.
e) Wire brush studs/bolts and nuts to remove any dirt on the
threads. Ensure that the nuts can run freely down the threads
before use. Coat the studs/bolts with a thin film of an approved
lubricant prior to installation.
f) Use pre-cut tanged reinforced sheet gaskets.
g) Wear gloves when handling tanged reinforced gaskets.
Don�ts
a) Do not re-use old gaskets. For every joint being made up, a new gasket should be used.
b) Do not use a gasket that has no identification. It may appear to
fit the fl**ge but this is not a guarantee.
c) Do not cut or deform a gasket to fit a fl**ge. If the gasket
doesn’t fit, the wrong one has been chosen.
d) Do not hand-cut tanged reinforced gasket sheet. Use pre-cut
gaskets.
Ref from :Pipe joints Hand book.
