Part #: 21WTPI

Size #1, 75 Micron - Polyester Felt Liquid Filter Bag w/Old-Style Plastic Ring (PE75P1F)

Part #: 21WTPI
Size #1, 75 Micron - Polyester Felt Liquid Filter Bag w/Old-Style Plastic Ring (PE75P1F)

The 21WTPI is a 75 Micron size #1 (7.06" x 16.5") Polyester Felt liquid filter bag with a plastic ring, designed to withstand higher solid loading, and are suitable for applications using vessel or open filtration systems. Industries that would need liquid filter bags consist of chemical, food, paper, petroleum, adhesives, paints and many others.
Product Specifications
  • Quantity Qty Price
  • 1 $4.870 ea.
  • 50 $4.489 ea.
  • 100 $3.022 ea.
  • 500 $2.902 ea.
  • Case Pack: 50 ea.
  • Pallet Pack: 1,250 ea. (25 Cases)
Shipping Estimates can be found on the Cart page once you add products.
Quantities above 50 should be even increments of 50.

Availability: Available In Stock Quantity Available: 292


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About Standard Felt Liquid Filter Bags

Key benefits
  • Micron ratings from 1 to 200
  • All industry standard & custom sizes available
  • Broad chemical compatibility
  • High flow/low pressure drop
  • Sewn or fully-welded construction
  • Choice of steel ring or plastic flange
  • Temperature ratings to 200°F (PO), 275°F (PE ), 425°F (HT) and 500°F (Teflon®)
Felt Bag Materials
Constructed using 100% synthetic fibers in polypropylene, polyester, Nomex® and Teflon®. The proper combination of fiber diameters, weights and thicknesses result in an economical depth filter media. To reduce fiber migration, Polypropylene bags are treated with a glazed finish, while Polyester and Nomex® bags are singed.

  • Polypropylene and Polyester materials meet FDA regulations for food contact under CFR21, Section 177.1520
  • Silicone-free construction
  • High dirt holding capacity
  • Ability to remove both solid and gelatinous particles
  • Low cost
  • Glazed/singed finish on Polypropylene & Polyester reduces fiber-shedding
Felt Bag Styles
Steel-ring bags have a galvanized steel ring (stainless steel optional) sewn into the top of the bag. They are supplied with sewn seams standard. Plastic flange bags have a specially-designed flange sewn to the top of the bag. They are supplied with sewn seams standard (fully-welded seams available upon request).

Welded Construction
Fully-welded bags are available in polypropylene and polyester felt for #1, #2, #3, #4 and #5 plastic flanges.

  • No needle holes, thus increasing efficiencies by preventing by-pass
  • Elimination of threads further reduces possibility of fiber-shedding


This information has been provided as a general guide. It is the customer's responsibility to select the proper container for product and application compatibility.

Additional Information

Material Polyester Felt
Size 1 (7.06" x 16.5")
Micron Rating 75 Micron
Seam Type Sewn
Ring Style Old-Style Plastic Ring
Case Pack 50 ea.
Pallet Pack 1,250 ea. (25 Cases)
FDA Approved Yes
Dimensions 7.06" Dia. x 16.5" H
Country of Manufacture


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