| Ferrule
/ Flow Thru - General Information |
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To
hold the component parts of the brush together: ferrule, plug
and fill. Depth of penetration into the filament is controlled
according to brush function.
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An
air-cured material with a water absorption rate of less than
2%. Used primarily where expansion due to liquid absorption
is to be held to a minimum. For wet applications, epoxy is generally
used with synthetic fill. Resistant to most solvents.
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The
plug is used to vary brush density as needed for the application.
It may have holes in it to permit through feeding of liquids,
air, or fine powders. Usually made of wood but can be made from
plastic or metal.
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Handles
can be supplied to fit most types and sizes of ferrules. Hardwoods
are most commonly used for their durability, appearance and
machinability. Metal handles can be used as electrical conductors
to allow mechanical attaching and to incorporate pneumatic or
fluid flow devices. Plastic handles can be used where quantities
are large enough for injection molding. They allow great flexibility
of design for either function or merchandising appeal. Handles
can be stamped with customer name or part number.
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Hog
bristle, horsehair, all synthetics, tampico fiber and fine wires.
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Plastics,
brass, nickel-tin, stainless and copper.
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