About Custom Filters

Custom filter design is a specialized service that Sidco has offered since the founding of our company. We use a collaborative process to reverse engineer a filter that will meet your needs and specifications. It entails evaluating your needs, as well as utilizing a variety of tactics; while developing a new manufacturing design or sourcing specialty raw materials. Sidco is one of the few manufacturers who will assist with a custom application or reverse engineer a filter.
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Capabilities and Opportunities

Sidco has a variety of capabilities to manufacture custom filters for your unique application. We can work with an OEM on a new application, customize an existing filter to better suit your needs, or reverse engineer an existing filter.

Our team is also happy to evaluate new designs, specifications, or filter projects that are not high volume. One of our niche areas is specialized, low-volume applications or special modifications to current filters.

The construction of a filter can vary depending on the needs of its application. To accommodate these needs Sidco has a variety of construction materials and capabilities. We work with each customer to create a design that fits their parameters.

These special constructions are developed for both our cylindrical filters, as well as our panel designs.

Construction Capabilities and Materials

Specialty materials include 304 and 316 stainless steel, reinforced support for high pressure or high-flow applications, custom sizes, unique designs, and many others.

Specialty options include:

  • 304 stainless steel and 316 stainless steel
  • Reinforced support for high pressure or high-flow applications
  • Custom sizes
  • Unique designs
  • Flanges
  • Gaskets
  • Custom fabricated end caps
photo of custom oval shaped HEPA filters

Molding Capabilities and Materials

We can provide uniquely designed end seals with special seals, risers, flanges, or other variations, as well as custom imprinted or stamped molds.

Our molding capabilities go beyond filters to custom applications that may need urethane mold implementation.

Sidco’s specialized polyurethane is a rigid formula that has been designed to provide a strong cap with excellent sealing and a longer life than the urethane our competitors use.

We also have a variety of specialty potting and molding compounds available for high temperature or corrosive environments:

  • Epoxy
  • Silicone
  • Urethane
  • High-temperature options

Specialty Media Options

Many of our filters can be easily customized to use a variety of requested media. Available media include options rated for high temperatures, high performance, special environments and range from 0.3 micron to 750 micron.


Capable of removing 99.97% of dust and allergens with a high efficiency. Sidco’s HEPA media is available in pleat depths ranging from to 0.625″ to 6.0″.


Polyester, fiberglass felt, aramid felt, rayon felt, rayon/nylon felt, polyester felt, polypropylene, polyester cotton blend, and dynaglass.

Papers and Non-Wovens

Standard cellulose paper, 80/20 high flow blend paper, 80/20 dust collector paper, reemay, nanofiber paper, spun bond, spun bond polyester, woven nylon, and flame retardant papers.


Cotton, polypropylene, fiberglass, cotton terry cloth, teflon, and others available.


Urethane foam, reticulated foam, and lofted dacron.

Coalescing media

Fiberglass tube, pleated fiberglass, micro-glass, multi-layered coalescing media and other options.


Stainless steel woven mesh, epoxy coated screen, woven carbon steel, stainless steel screen, and more options available in various configurations and efficiencies.