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polypropylene needle felt
In some special applications require polyester or polypropylene felt filter bags can take advantage of the 100% welded construction. This construction ensures that nothing by-passes the filtration media through holes in sewn fabric. Ultra strong 100% thermally bonded welding process ensures bypass free, thread free seams and improved filtration efficiencies
ST Filter use only the best, most consistent Polyester and Polypropylene needle felt in the industry. Silicone Free and FDA approved, our media comes standard with a fibre-free surface treatment to prevent fibre contamination downstream.
These bags, made from silicone free materials feature super-strong welded construction rather than sewn seams.
Bottom seams are 100% welded, both strong and flexible, allows the filter bag to conform to the shape of the retainer basket creating support as differential pressure builds.
Our special polypropylene, polyester or Nylon construction collars are made from virgin resins, offers a unique positive seal. Made from chemically resistant, flexible plastic. This unique design fits to most any filter vessel, ensuring bypass free filtration. Raised integral handles make bag change-out quick and easy.
100% welded filter bags are available in all standard sizes and Our unique Plastic collar design can be replaced to major standard Filter Housings in market: Hayward, FSI CUNO, 3M, LOEFFLER, GAF
polyester 7 Nylon 7 Polypropylene
adapts to most filter vessel ensuring bypass free filtration. Raised integral handles make bag change-out quick and easy. Retainer ring versions are available in carbon steel, stainless steel and Polypropylene as well as stainless steel snap band configurations to fit "commercial filter housings". Can be replaced to most filter housings in the market e. g. Hayward, FSI, CUNO, 3M, GAF.
Polypropylene felt7 Polyester felt
Micron Ratings (um)
0.5,1, 5, 10, 25, 50, 75, 80, 100, 150, 200, 250, 300
1#("180*410mm) , 2#("180*810mm) , 3#("101*220mm) , 4#("101*355mm) other un-standard size etc.