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Welded Construction Filter Bags

Now, applications requiring polypropylene or polyester felt filter bags can take advantage of the all-welded construction afforded by Eaton patented SENTINEL Filter Bags. These bags feature super-strong welded construction rather than sewn seams. This construction ensures that nothing bypasses the process media through holes in sewn fabric.

Welded, Bypass-free Filter Bag Construction

SENTINEL filter bags from Eaton represent the industry standard in bypass-free filter construction. Available in polyester and polypropylene materials, all SENTINEL filter bags feature:

  • SENTINEL Pressure Actuated Seal Ring
  • Super Strong Welded Construction
  • Special surface finish prevents fiber release

Proprietary Construction

Eatons’s proprietary construction processes produce a reliable, durable filter bag. All seams are fully welded, producing strong, reliable joints with no by-pass or loose sewing thread. Seams are both strong and flexible, allowing the filter bag to form to the restrainer basket. The seam edges are heat sealed, eliminating possible loose fibers. This results in a filter bag with durable performance for the most demanding applications.


All Eaton SENTINEL filter bags utilize the patented SENTINEL seal. Its all-plastic construction provides a flexible, chemically resistant seal which adapts to any filter vessel. This unique design employs a pressure activated sealing lip which responds to increases in differential pressure. As the pressure increases, the seal of the ring improves, insuring by-pass free performance over all ranges of pressure, temperature and micron rating. The elevated bag handles make removal of the bag from the vessel quick and easy. When a SENTINEL filter bag is installed into a Eaton filter vessel, the ring snaps into place, holding its position until the vessel is closed.

Technical Data

Micron Rating µm
Filter Media Material1510255080100125150200250300400600800

Product Code

Bag Material - Micron Rating - Bag Cover Layer - Bag Size - Collar/Ring Type - Options - Packaging

Bag Material
PE = Polyester
PO = Polypropylene
Monofilament mesh
NMO = Nylon
Micron Rating µm
1 - 5 - 10 - 25 - 50 - 100 - 200 - 250 - 300 - 400 - 600 - 800
Bag Cover Layer
P = Plain
Bag Size
01 = Ø 180 x 430 mm L
02 = Ø 180 x 810 mm L
03 = Ø 100 x 230 mm L
04 = Ø 100 x 380 mm L
Collar / Ring Type
E = Polypropylene SENTINEL Ring, welded
H = Polyester SENTINEL Ring, welded
Z = Santoprene SENTINEL Ring, welded
Bags/Box, Box size: S, M, L