TECHNICAL BULLETIN NUMBER 104

A I R & L I Q U I D F I LT E R S
CUSTOM-ENGINEERED
SOLUTIONS IN
KNITTED WIRE MESH

Metex Knitted Wire Mesh Products
Solve Problems Cost Effectively
Metex knitted wire mesh is manufactured from an “endless” wire that
is formed into loops and subsequently networked, providing elasticity
and resilience not found with woven wire or powdered metal products.
The diversity and versatility of wire mesh enables Metex to produce products for a wide variety of applications, including:
• Seals
• Heat Wicks
• Air Gap Rings
• Breathers
• Noise Attenuators
• Filters
• Coalescers
• Mufflers
• Shock Absorbers
• Gaskets
• Air Filters
• Protective Coverings
• Heat Shields
• Electronic Shielding • Exhaust Seals
• Navin Rings
• Ball Joint Seal
• Catalytic Converter
• Catalytic Converter
Systems
End Rings
Support Mesh
• Flame Arrestors

For forty years, Metex
design, development, and
manufacturing engineers have
been producing engineered
components that take maximum advantage of the
unique characteristics and
robust nature of knitted wire
mesh. Its interlocked looped
structure, which offers excellent resiliency, memory—
even when subjected to
high temperatures as well
as high-tensile or compressive stress—and strength,
make knitted wire the ideal
choice in materials when
both performance and cost
are paramount.
Metex products now
meet a wide range of critical
needs—from providing flexible, yet durable, seals and
joints to noise attenuation,
thermal insulation, and filtration—in some of the most
demanding industrial applications and environments.

Our Knitted Wire Mesh Filters continue a longstanding Metex
tradition of integrating the right designs, materials, and manufacturing
methods to meet customer needs for optimal performance at lowest
possible cost.

Complete in-house design,
R&D, and test facilities

Metex Corporation
970 New Durham Road
Edison, New Jersey 08818
Phone: 732-287-0800
1-800-222-0969
Fax:
732-287-8546
E-mail: sales@metexcorp.com

Metex Europe
4, Rue Pierre Brossolette
92130 Issy Les Moulineaux
France
Phone: 33 (0)1 46 45 99 55
Fax:
33 (0)1 46 45 99 07

Metex Mexico
No. 30 Del Centro Industrial Limon Los Pinos
En Av. Ferrocarril KM 14.5 En El Fracc. Los Pinos
Tijuana, Baja California Mexico
Phone: 011-52-66-89-74-34
Fax:
011-52-66-89-74-53
Flexibility in manufacturing
for JIT requirements

Superior Filtration in Hostile Environments
with Knitted Wire Mesh
Filtering liquids or air in hostile environments—such as those subject to
temperature extremes, high orders of shock/vibration, and caustic fuels or
fumes—has posed problems for paper filter elements. These types of elements
simply will not withstand these types of operating conditions.
Since paper filters are typically composed of organic materials, they are
also subject to attack by the caustic byproducts of many industrial processes—
such as those involving combustion. For example, corrosion often takes place
when high-temperature lubricating oils are loaded with such acids. After
extended use, the surface area of the paper filter becomes heavily loaded,
resulting in filter weak spots. (If the pressure relief valve is not set low
enough, and the pressure is allowed to remain at normal operating pressure
[500 to 700 kPa], paper filter elements may tear, fracture, or even burst.)
Sintered metal filters—due to their granular construction—are also
prone to fracture or disintegration when subjected to the stresses of high
temperature and shock. Unless the fusion process involved in their construction is 100% complete, small particles may begin to break away. As a result,
when installed on either rotating or reciprocating machinery, little particles
of filter material very frequently detach and migrate to block the very devices
the filter was designed to protect.
Metex knitted wire mesh liquid and air filters overcome the limitations
and deficiencies of these and many other filtration methods. Where resistance
to degradation, corrosion, mechanical, or thermal shock is desired—and
where a resilient product is needed for proper cavity fit—Metex filters provide
an economical, robust alternative. From cryogenic operating conditions up to
temperatures of 650° C, knitted wire mesh filters maintain their integrity
even when subjected to extremely high vibration and exposed to destructive
gases such H2, SO4, and HNO3.