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Extended Life Felt Filter Bags

  • Extended Life Felt Filter Bags
HL Extended Life filter bag provides superior filtration performance for removing gels, irregular shaped particles in liquid streams with a wide particle size distribution, as well as up to twice the dirt holding capacity of a standard filter bag. The bag is made of extended-file polyester and polypropylene materials utilizing a proprietary fiber blend configuration to create a media that is heavier, thicker and stronger than standard felt media, resulting in an average operational life of 2 to 4 times longer than conventional bags. The result is a dramatically higher dirt holding capacity at the same efficiency and differential pressure. 

The Extended Life filter bags are specially designed with a coarse inner layer and a middle layer of felt constructed with finer fibers. The outside layer is glazed, by melting fibers together, to form a tight, secure downstream matrix, which prevents fiber migration.

Material: extended life Polyester/Polypropylene felts (PPXL, PEXL) 

Micron rating: 1-200µm

Construction: w/w/w (fully welded, no by-pass) 

A coarse inner layer, graded pore structure, greater depth than standard bags, providing excellent filtration performance for removing gels, irregular shaped particles

Up to twice the dirt holding capacity of a standard filter bag

Increase productivity due to longer, uninterrupted processing/run times 

Reduce operating cost-savings due to fewer filter change-outs and reduced filter element disposal costs due to lower bag consumption, downtime, change-out labor, storage and disposal

The coarse, pre-filtering layer captures a large amount of contaminants without excess surface loading

Surface glazed with no fiber fall, providing higher filtration efficiency and eliminating unwanted fiber migration

Welded seam construction eliminates liquid bypass 


Micron Rating
Max. Operating Temperature
Felt, Extended Life Polyester (PEXL) 1,3,5,10,25,30,35,50,75,100,150,200 265/302°F (130/150°C) 
Felt, Extended Life Polypropylene (PPXL) 1,3,5,10,25,30,35,50,75,100,150,200 194/230°F (90/110°C)

Ring: PP/PE plastic 

Bag sizes:  #1, #2, others on request


• Suzhou Huilong Purification Filter Co.,Ltd
• Add: Datang industrial Zone, Qiandeng 
Town, Kunshan City, Jiangsu, China.
• Tel: +86-20-82580895
• Fax: +86-20-82580859
• Email:
• Guangzhou Longhuilong Filter Co., Ltd
Guangzhou Huilong Filter Co.,Ltd
• Tel: +86-20-82580895
• Email:

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