Product Category

Conventional Sewn Felt Filter Bags

HL Filter offers a wide range of Polyester liquid filter bags designed and constructed to fit an assortment of filter vessels, whether from HL Filter or from another supplier. We manufacture our own felt media for our felt filter bags under 9001:2008 quality systems, resulting in order to order, year to year, reliability and repeatability. Each filter bag is also individually sealed in protective plastic packaging to prevent contamination. Our filter bags are silicone free with sturdy construction and easy installation.

HL Sewn Filter Bags are made out of 100% polypropylene or polyester fibers, ensuring maximum purity and consistent performance. Using silicone-free threads, high-speed industrial sewing machines, and tight and durable sewn filter bag rings, we offer affordable and reliable sewn filter bags.

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Product Description
Specifications
Applications
Ordering Information

Materials: Polypropylene, Polyester

Available micron rating range from 0.5-200 µ (for PE, PP)

Continuous operating temperature: PE: 265°F (130°C), PP: 194°F (90°C)

Surface treatments available: signed and/or glazed to reduce the possibility of migration

Resistance to chemicals depends on the materials (please refer to Fiber Characteristics_Liquid Filtration)

Silicone free threads and double stitches for maximum strength

Heavy-duty sewing construction enhancing particle holding capacity

Puncture free overlap side seams provide added strength and improves effluent consistency

Types of ring/side/bottom constructions: s/s/s fully sewn (w/s/s or s/w/s modifications are available)

Sewing method: five-thread flat lock

Optional covers to eliminate fiber release and migration

All industry-standard #1,2,3,4 & custom sizes available

Standard or reserving binding

OEM replacement ring styles

Standard Needle Punched Felt Samples
Standard Needle Felt, Polypropylene (PP)
Part Number	Micron Rating	Weight oz/yd²±5% (g/m²±5%)	Thickness In±0.004 (mm±0.1)	Air Permeability CFM @ ½" W.G 125PA ±25% (L/dm²min @ 200PA ±25%)	Tensile Strength lb/in±25 (N/5CM±25%)		Max. Operating Temperature Continuous/Surge ^oF (^oC)
Part Number	Micron Rating	Weight oz/yd²±5% (g/m²±5%)	Thickness In±0.004 (mm±0.1)		Warp MD	Weft CD	Max. Operating Temperature Continuous/Surge ^oF (^oC)
PP-01	1	14.01 (475)	0.106 (2.7)	32(156)	69 (600)	91 (800)	194/230 (90/110)
PP-05	5	13.17 (450)	0.095(2.4)	55(270)	57 (500)	69 (600)	194/230 (90/110)
PP-10	10	10.91 (370)	0.091(2.3)	80(390)	57 (500)	69 (600)	194/230 (90/110)
PP-25	25	10.62 (360)	0.091(2.3)	123(600)	57 (500)	69 (600)	194/230 (90/110)
PP-50	50	10.32 (350)	0.091(2.3)	160(780)	57 (500)	69 (600)	194/230 (90/110)
PP-75	75	10.32 (350)	0.091(2.3)	172(840)	57 (500)	69 (600)	194/230 (90/110)
PP-100	100	9.73 (330	0.091(2.3)	252(1230)	46 (400)	57 (500)	194/230 (90/110)
PP-150	150	9.73 (330	0.091(2.3)	283(1380)	46 (400)	57 (500)	194/230 (90/110)
PP-200	200	9.44 (320)	0.091(2.3)	320(1560)	69 (600)	103 (900)	194/230 (90/110)
Standard Needle Felt, Polyester (PE)
Part Number	Micron Rating	Weight oz/yd²±5% (g/m²±5%)	Thickness Inch±20% (mm±20%)	Air Permeability CFM @ ½" W.G 125PA ±25% (L/dm2min @ 200PA ±25%)	Tensile Strength lb/in±25 (N/5CM±25%)		Max. Operating Temperature Continuous/Surge ^oF (^oC)
					Warp MD	Weft CD
PE-01	1	14.01 (475)	0.075 (1.9)	32(156)	114 (1000)	148 (1300)	265/302 (130/150)
PE-05	5	10.62 (360)	0.091 (2.3)	61(300)	57 (500)	114 (1000)	265/302 (130/150)
PE-10	10	10.62 (360)	0.087 (2.2)	82(400)	57 (500)	103 (900)	265/302 (130/150)
PE-25	25	10.62 (360)	0.095 (2.4)	123(600)	57 (500)	103 (900)	265/302 (130/150)
PE-50	50	10.62 (360)	0.102 (2.6)	164(800)	57 (500)	103 (900)	265/302 (130/150)
PE-75	75	10.62 (360)	0.098 (2.5)	184(900)	46 (400)	91 (800)	265/302 (130/150)
PE-100	100	10.62 (360)	0.114 (2.9)	205(1000)	46 (400)	91 (800)	265/302 (130/150)
PE-150	150	10.62 (360)	0.122 (3.1)	266(1300)	46 (400)	80 (700)	265/302 (130/150)
PE-200	200	10.62 (360)	0.126 (3.2)	307(1500)	46 (400)	74 (650)	265/302 (130/150)
Further technical data, modified surface treatments, and other micron ratings are available on request
Self-supported felts are standard. Scrim-supported felts are available on request

General Chemical

Produced Water from Gas Drilling

Process Water

Food and Beverage

Paints and Coatings

Custom OEM Applications

How to order a felt filter bag
1) Material	2) Micron Rating	3) Finish	4) Size	5) Ring	6) Ring/side/bottom Construction
PE-Felt, Polyester	PE:0.5-200	PL-Plain	#1	S- Carbon Steel
PP-Felt, Polypropylene	PP:0.5-200	SO-Singed One Side	#2	SS-Stainless Steel	SSS- Fully Sewn
		SB-Singed Both Side	#3	Z- Zinc Galvanized Steel	SWS- Ring Sewn, Side Welded, Bottom Sewn
		GL-Glazed	#4	P-Polypro PP Flange	WSS- Ring Welded, Side Sewn, Bottom Sewn
		SG-Singed & Glazed		E-Polyester PE Flange
		HS-Heat Set		DS-Draw String
		MS-Special/modified		VS-High-temp Plastic Snap-seal	7) Options
				PP-Polypro Ring	HS-Handle Strap (additional handle, same media)
				PE-Polyester Ring	A-Automotive (bottom and side seams inside bag)
				T-Titanium	MC- Mesh Cover
				N-No Ring	SB-Spunbond cover
				MS-Modified/Special	SR-Special request


Other micron ratings, other sizes, and special design are available on request

Standard Bag Size	#1	#2	#3	#4
Surface Area	2.6 (0.24)	5.2 (0.48)	0.9 (0.08)	1.7 (0.16)
ft² (m²)
Volume	2.1 (7.9)	4.5 (17.0)		0.7 (2.7)
U.S gal (liter)			0.37 (1.4)
Max. Flow Rate	90 (20)	180 (40)	26 (6)	53 (12)
GPM (m³/h)
Bag Diameter	7.0 (180)	7.0 (180)	4.0 (105)	4.0 (105)
inch (mm)
Bag Length	17.0/430	32.0/810	9.0/230	15.0/380
Inch (mm)
Other Bag Size	Available upon request

Product Category

Conventional Sewn Felt Filter Bags

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