3M 42-03 Manual Del Usuario página 7

Cup Installation, Cleaning and Maintenance cont.
Gasket Notes
These cups are pressure cups, therefore
the gasket must be in good condition.
The lid must be firmly seated on the cup
to prevent air and fluid leakage. Inspect
the gasket, lube the gasket channel, and
pay attention to the fit with each use.
Replace the gasket when necessary.
To extend the life the gasket: Clean and
dry gasket surface and store with cup
when not using.
To replace gasket:
1) Pull out the old gasket. Thoroughly
clean surface inside lid.
2) Inspect and clean lid of cup for dried
paint and burrs. Clean with solvent
or ultra-fine steel wool.
3) Place a small amount of petroleum
jelly on finger and lightly rub over
gasket channel inside lid. Carefully
install new gasket. Make sure that
the gasket is seated flat.
4) Tighten lid securely onto cup. Wait a
few minutes, then retighten. This will
ensure positive positioning of gasket
onto lid for optimum seal.
6