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Eaton Filter Bags

SENTINEL® and SNAP-RING® monofilament filter bags for surface filtration

Photo of a monofilament filter bag with SENTINEL seal ring.


Filter Specifications

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Materials Seal Rings Retention Ratings
Monofilament polypropylene, nylon, polyester, or polyether ether ketone (PEEK) Sewn Santoprene™ SENTINEL seal ring
Sewn stainless steel or zinc-plated steel SNAP-RING seal ring
5, 10, 25, 50, 80, 100, 150, 200, 250, 300, 400, 600, 800, 1000, 1250 µm

Retention Ratings

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  Retention Ratings (in µm)   Sizes
Materials Codes 5 10 25 50 80 100 125 150 200 250 300 400 600 800 1000 1250 Sewn SNAP-RING Seal Ring Sewn SENTINEL Seal Ring Max. Operating Temperatures
°F (°C)
01 02 03 04
Nylon NMO     S   374 (190)
Nylon NMO       Z 257 (125)
Polypropylene PMO                   A   230 (110)    
Polyester PEMO                         S   374 (190)    
PEEK PEEKMO                       A   464 (240)    

Image showing the model number ordering information for Monofilament filter bags.

3 Further options upon request (see document SAL-L-12).



  • Non-deformable monofilament material is woven into a specific pattern with fusion-welded intersections for extra strength and a retention rating
  • All nylon monofilament filter bags with the SENTINEL seal ring have an inseam for safe filtration
  • All nylon monofilament grades <125 µm are manufactured with a twill-tape envelope on the side seam and bottom seam to prevent liquid bypass through the needle holes
  • The pressure-activated SENTINEL seal ring provides a flexible, chemically resistant seal which adapts to any bag filter housing
  • Eaton strongly recommends the use of an insertion tool that facilitates the insertion of the filter bag into the bag filter housing and ensures the correct alignment of the filter bag inside the restrainer basket

SENTINEL and SNAP-RING monofilament filter bags feature a wide range of retention ratings. The different materials cover many applications with demanding chemical and thermal properties. These filter bags are designed for surface filtration to retain particles that are larger than the respective pore size.


  • Paints and varnishes
  • Inks
  • Resins
  • Chemicals
  • Aggressive solvents



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Sizes Dimensions Filter Area Max. Operating Temperatures Max. Differential Pressure Recommended Change-out Pressure for Disposal1 Max. Flow Rates2
01 Ø 7 x 17" L (180 x 430 mm) 2.6 ft2 (0.24 m2) 257 °F (125 °C) 374 °F (190 °C) 230 °F (110 °C) 374 °F (190 °C) 464 °F (240 °C) 36.2 psi (2.5 bar) 11.6 - 21.7 psi (0.8 - 1.5 bar) 88 GPM (20 m3/h)
02 Ø 7 x 32" L (180 x 810 mm) 5.2 ft2 (0.48 m2) 176 GPM (40 m3/h)
03 Ø 4 x 9" L (100 x 230 mm) 0.9 ft2 (0.08 m2) 26 GPM (6 m3/h)
04 Ø 4 x 15" L (100 x 380 mm) 1.7 ft2 (0.16 m2) 53 GPM (12 m3/h)

1 Depending on the respective application requirements.
2 For liquids with a dynamic viscosity of 1 mPa·s @ 68 °F (20 °C).

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