Sewn End Style - Cylindrical, Double Open Ended (DOE) with attached textile gasket seal, perforated steel center core (as opposed to inferior expanded metal of others). Filter media is sewn or ultrasonically bonded over a pleated woven wire cage. The large sewn end filter shown has an optional backwash screen banded to the exterior of the filter media. Sewn end style filter elements can serve in high temperatures (700+°F with all glass filter media) or environments with aggressive chemistry that might otherwise degrade filters with molded ends.

However, with the newest Polyurethanes now being used by Shawndra, molded ends can replace sewn end elements for most common services at a fraction of the cost -- please ask about our 327s product line.

Does your P/N have a - BK- or an - HK- in it?

Sewn end filters may also have optional backwash screen (BK, BN) and/or fin spacers (HK, FK, FN, HN). In the interest of brevity, we did not list each filter with all possible options. Backwash screen is useful if the fluid flow is ever reversed to clean and extend the service life. For top performance, we pleat backwash screen to full height & full fin depths. Fin spacers are corrugated metal strips placed within the interior pocket of each pleat to promote flow in high pressure differential, or liquid service. We offer all options, including alternate filter media (does your P/N end in different numbers?), and 304SS metal parts (an N vs. a K). Please call if your P/N is close.

Shawndra's Sewn End Filter Elements have rugged metal baskets and hand sewn media in a design that has been proven over decades. These elements are constructed entirely from metal and textile media, without any potting material or synthetic end seals. They can endure service in aggressive chemistries and/or high temperatures that molded end elements, or some adhesives used in metal ended filters, could not withstand.

Shawndra's sewn end filter elements have heavy duty 16 & 20 gage center cores with 58% open area for lower pressure differential. Competitors will often use expanded metal or off grade  perforated  metal.

Large elements have solid steel support rings and welded lift lugs to assist in handling. We double weld for superior strength. Our standard deck wire is woven to width. Competitors will often use mild steel screen (which rusts) with raw cut edges that can  perforate the media. When a non-standard width is required, we do something no one else does, we fold it. We preclude the chance for sharp wires to damage the crucial filter media, or more importantly, your hands!

Our radius cut notch ring reliably secures the pleated deck wire assembly to the element core. Others use square cut notch ring that often fail. Standard sewn end filters (those with catalogue numbers ending with K5) use corrosion inhibited carbon steel cores, epoxy coated deck wire, and high flow 10µ (98%) polyester felt media. For corrosive services, we offer optional 304 or even 316 stainless steels. A wide selection of alternative filter media covers a full spectrum of chemical resistances, with particle retentions down to 1 µ, and service to 700°F.