BOS MAX Filter Bags

The innovative Pall FSI BOS MAX heavy-duty seamless filter bags have an advanced design that provides extended life and increased efficiency with a greater depth filtration than conventional filter bags. It provides all of the benefits of the standard BOS filter bag with a semi-rigid microfiber insert that increases the dirt holding capacity of the filter while providing the absolute filtration of the BOS filter bag.

The BOS MAX filter bag is contaminant free and ideal for high purity applications in Automotive ( e-coat, paint 

Product images are a representation of product family for illustartion purpose only. Actual products may vary

BOS Max Filter Bags, Seamless Microfiber Polypropylene, 75 micron, Size 1, Polyloc Polypropylene, Welded Seam

Product ID: BOS75PM1PMAX
Unit of Measure
Min Order Qty
Welded Seam
Plain (No Cover)
Cover Micron Rating
FDA Rating
Polyloc Handle
Material (Media)
Seamless MicroFiber Polypropylene
See All Attributes





  • BOS MAX Heavy Duty Extended Life Bags contain a semi-rigid, microfiber cartridge insert for up to four times the life of standard BOS bags and are ideal for high-purity applications
  • Absolute rated 3-100 microns for high efficiency and consistent quality
  • Thermally-bonded microfibers contain no sizing, bonding adhesive, resin or silicone
  • Contaminant free to eliminate craters providing better surface results
  • PolyLoc® ring creates hermetic seal within a vessel housing to prevent liquid bypass


Filter Bag Documents

  • BOS Seamless Filter Bags

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  • FSI Filter Bag Catalog

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  • FSI Master Catalog

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  • Filter Fabric Qualities and Bag Data

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  • Flow Rates and Micron Rating Availability

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Filter Media
Polypropylene microfiber
Maximum Life
Maximum Operating Temperature
160° F (71° C)
Suggested Differential Pressure
35 PSIG maximum — dirty
10-15 PSIG optimum change out
Micron Rating
Polypropylene Absolute 98% Rated
3, 5, 10, 25, 35, 50, 75, 100
Bag Sizes
Size 1
7” x 16” (17.78 cm x 40.65 cm)
Size 2
7” x 32” (17.78 cm x 81.28 cm)
Ring (Collar)
Polypropylene PolyLoc®
Seamless Melt-blown Construction

* Available with Sewn seams only


Industrial Applications

Auto Original Paint, Auto Paint Process Water, Auto Painting/Coating Sludge Separation, Auto Painting/Coating Zinc Phosphate Bath, Auto Power Train Dept: Parts Washing, Test Stands (Metal Chip Filtration), Mining Final Product (Slurry), Municiple Mining Water [Rinsing], Quenching / Cleaning, Roll Bite (Safety Filter), Shape + Material Handling, Pulp & Paper Bleach Chemical Prep, Pulp & Paper LOH, Pulp & Paper Machine Process Application, Pulp & Paper Paper Coating, Pulp & Paper Pulp Screening, Auto Painting/Coating Zinc Phosphate Bath, Midstream Process Water

Oil & Gas Applications

Refinery Amine Systems, Upstream Onshore Produced Water, Upstream Onshore Surface Discharged Water, Midstream Acid Gas, Midstream Glycol Filtration

Chemical & Polymer Applications

Poly Cmdty Raw Material (Fluids), Poly Engrd & Spcl Raw Material (Fluids), Chem Final Product (Liquid), Amine/Benfield /Other Solvent loop