Felt Filter Bags | McMaster-Carr

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Removes Particle Size Down To

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100 μm to 199 μm

200 μm to 249 μm

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FDA Compliant 21 CFR 174.5

FDA Compliant 21 CFR 177.2260

FDA Compliant 21 CFR 177.2800

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80 Products

Filter Bags for Water


Seamless	Sewn

Use these bags with a filter bag housing to remove contaminants from your water line.

Seamless—Seamless filter bags provide more uniform filtration than filter bags with a seam. They trap very fine particles that can pass through the pinholes in a seam.

Felt—Felt filter bags have higher debris-holding capacity than mesh filter bags.

											Each
	Dia.	Ht.	Filter Bag Trade Size	Material	Flange Material	Ring Material	Max. Temp., ° F	Max. Flow Rate, gpm	Removes Particle Size Down To, μm		1-24	25-99	100-Up
Seamless







				Felt

				4"	8"	3	Polyester Plastic	Plastic	—	200	50	1 , 5 , 10 , 25 , 50 , 100 , 200	00000000	00000	00000	00000


				4"	14"	4	Polyester Plastic	Plastic	—	200	50	1 , 5 , 10 , 25 , 50 , 100 , 200	00000000	0000	0000	0000
				5 1/2"	21"	8	Polyester Plastic	Plastic	—	200	100	1 , 5 , 10 , 25 , 50 , 100 , 200	00000000	00000	0000	0000
				5 1/2"	32"	9	Polyester Plastic	Plastic	—	200	150	1 , 5 , 10 , 25 , 50 , 100 , 200	00000000	00000	00000	00000
				7"	16 1/2"	1	Polyester Plastic	Plastic	—	200	110	1 , 5 , 10 , 25 , 50 , 100 , 200	00000000	00000	0000	0000
				7"	16 1/2"	1	Polyester Plastic	Plastic	—	300	50	1 , 5 , 10 , 25 , 50 , 100 , 200	0000000	00000	0000	0000
				7"	32"	2	Polyester Plastic	Plastic	—	200	220	1 , 5 , 10 , 25 , 50 , 100 , 200	00000000	00000	00000	00000
				7"	32"	2	Polyester Plastic	Plastic	—	300	100	1 , 5 , 10 , 25 , 50 , 100 , 200	0000000	00000	00000	00000
				8"	32"	12	Polyester Plastic	Plastic	—	200	200	1 , 5 , 10 , 25 , 50 , 100 , 200	0000000	00000	00000	00000


				Sewn Seam







								Felt

								4"	8"	3	Polyester Plastic	—	Metal	300	50	1 , 5 , 10 , 25 , 50 , 100 , 200	00000000	0000	0000	0000


								4"	14"	4	Polyester Plastic	—	Metal	300	50	1 , 5 , 10 , 25 , 50 , 100 , 200	00000000	0000	0000	0000
								5 1/2"	21"	8	Polyester Plastic	—	Metal	300	100	1 , 5 , 10 , 25 , 50 , 100 , 200	00000000	0000	0000	0000
								5 1/2"	32"	9	Polyester Plastic	—	Metal	300	150	1 , 5 , 10 , 25 , 50 , 100 , 200	00000000	0000	0000	0000
								7"	16 1/2"	1	Polyester Plastic	—	Metal	300	110	1 , 5 , 10 , 25 , 50 , 100 , 200	00000000	0000	0000	0000
								7"	32"	2	Polyester Plastic	—	Metal	300	220	1 , 5 , 10 , 25 , 50 , 100 , 200	00000000	00000	0000	0000
								8"	32"	12	Polyester Plastic	—	Metal	300	200	1 , 5 , 10 , 25 , 50 , 100 , 200	00000000	00000	00000	0000

Filter Bags for Food and Beverage


Seamless	Sewn

These bags are suitable for contact with food and beverage. Use them with a filter bag housing to remove contaminants from your line.

Seamless—Seamless filter bags provide more uniform filtration than filter bags with a seam. They trap very fine particles that can pass through the pinholes in a seam.

												Each
	Dia.	Ht.	Filter Bag Trade Size	Material	Flange Material	Ring Material	Max. Temp., ° F	Max. Flow Rate, gpm	Food Industry Std.	Removes Particle Size Down To, μm		1-9	10-Up
Seamless







				Felt

				4"	8"	3	Polypropylene	Plastic	—	200	25	FDA Compliant 21 CFR 174.5, FDA Compliant 21 CFR 177.2260, FDA Compliant 21 CFR 177.2800	1 , 5 , 10 , 25 , 50 , 100 , 200	00000000	00000	00000


				4"	14"	4	Polypropylene	Plastic	—	200	50	FDA Compliant 21 CFR 174.5, FDA Compliant 21 CFR 177.2260, FDA Compliant 21 CFR 177.2800	1 , 5 , 10 , 25 , 50 , 100 , 200	00000000	0000	0000
				7"	16 1/2"	1	Polypropylene	Plastic	—	200	90	FDA Compliant 21 CFR 174.5, FDA Compliant 21 CFR 177.2260, FDA Compliant 21 CFR 177.2800	1 , 5 , 10 , 25 , 50 , 100 , 200	00000000	00000	0000
				7"	32"	2	Polypropylene	Plastic	—	200	180	FDA Compliant 21 CFR 174.5, FDA Compliant 21 CFR 177.2260, FDA Compliant 21 CFR 177.2800	1 , 5 , 10 , 25 , 50 , 100 , 200	00000000	00000	00000


				Sewn Seam







								Felt

								5 1/2"	21"	8	Polypropylene	—	Metal	200	75	FDA Compliant 21 CFR 174.5, FDA Compliant 21 CFR 177.2260, FDA Compliant 21 CFR 177.2800	1 , 5 , 10 , 25 , 50 , 100 , 200	00000000	0000	0000


								5 1/2"	32"	9	Polypropylene	—	Metal	200	90	FDA Compliant 21 CFR 174.5, FDA Compliant 21 CFR 177.2260, FDA Compliant 21 CFR 177.2800	1 , 5 , 10 , 25 , 50 , 100 , 200	00000000	00000	0000
								8"	32"	12	Polypropylene	—	Metal	200	275	FDA Compliant 21 CFR 174.5, FDA Compliant 21 CFR 177.2260, FDA Compliant 21 CFR 177.2800	1 , 5 , 10 , 25 , 50 , 100 , 200	00000000	00000	00000

Filter Bags for Petroleum Oil and Organic Solvents

Use these bags with a filter bag housing to remove contaminants from your water line.

Nomex—Nomex filter bags can handle higher temperatures than nylon filter bags. They have a felt construction, which has higher debris-holding capacity than mesh filter bags.

										Each
	Dia.	Ht.	Filter Bag Trade Size	Material	Ring Material	Max. Temp., ° F	Max. Flow Rate, gpm	Removes Particle Size Down To, μm		1-9	10-Up
Sewn Seam







				Felt

				4"	8"	3	Nomex	Metal	400	25	1 , 5 , 10 , 25 , 50 , 100 , 200	000000000	000000	000000


				4"	14"	4	Nomex	Metal	400	50	1 , 5 , 10 , 25 , 50 , 100 , 200	000000000	00000	00000
				5 1/2"	21"	8	Nomex	Metal	400	75	1 , 5 , 10 , 25 , 50 , 100 , 200	000000000	00000	00000
				5 1/2"	32"	9	Nomex	Metal	400	90	1 , 5 , 10 , 25 , 50 , 100 , 200	000000000	00000	00000
				7"	16 1/2"	1	Nomex	Metal	400	90	1 , 5 , 10 , 25 , 50 , 100 , 200	000000000	00000	00000
				7"	32"	2	Nomex	Metal	400	180	1 , 5 , 10 , 25 , 50 , 100 , 200	000000000	00000	00000
				8"	32"	12	Nomex	Metal	400	275	1 , 5 , 10 , 25 , 50 , 100 , 200	000000000	00000	00000

Long-Life Filter Bags for Water


Seamless	Sewn

Replace your filter bags less frequently—these have greater debris-holding capacity than standard filter bags. Use them with a filter bag housing to remove contaminants from your water line.

Seamless—Seamless filter bags are made of extra-thick material to trap large amounts of debris. They provide more uniform filtration than filter bags with a seam and trap very fine particles that can pass through the pinholes in a seam.

Sewn Seam—Sewn filter bags are made of two separate bags; the inside bag traps large particles and then the outside bag traps small particles.

											Each
	Dia.	Ht.	Filter Bag Trade Size	Material	Flange Material	Ring Material	Max. Temp., ° F	Max. Flow Rate, gpm	Removes Particle Size Down To, μm		1-24	25-99	100-Up
Seamless







				Felt

				7"	16 1/2"	1	Polyester Plastic	Plastic	—	300	75	1 , 5 , 10 , 25 , 50 , 100	0000000	000000	000000	000000


				7"	32"	2	Polyester Plastic	Plastic	—	300	135	1 , 5 , 10 , 25 , 50 , 100	0000000	00000	00000	00000


				Sewn Seam







								Felt

								4"	8"	3	Polyester Plastic	—	Metal	300	25	1 , 5 , 10 , 25 , 50 , 100	0000000	00000	00000	0000


								4"	14"	4	Polyester Plastic	—	Metal	300	50	1 , 5 , 10 , 25 , 50 , 100	0000000	00000	00000	00000
								5 1/2"	21"	8	Polyester Plastic	—	Metal	300	100	1 , 5 , 10 , 25 , 50 , 100	0000000	00000	00000	00000
								5 1/2"	32"	9	Polyester Plastic	—	Metal	300	150	1 , 5 , 10 , 25 , 50 , 100	0000000	00000	00000	00000
								7"	16 1/2"	1	Polyester Plastic	—	Metal	300	100	1 , 5 , 10 , 25 , 50 , 100	0000000	00000	00000	00000
								7"	32"	2	Polyester Plastic	—	Metal	300	220	1 , 5 , 10 , 25 , 50 , 100	0000000	00000	00000	00000
								8"	32"	12	Polyester Plastic	—	Metal	300	275	1 , 5 , 10 , 25 , 50 , 100	0000000	00000	00000	00000

Tie-On Filter Bags for Water

Felt

A drawstring at the opening allows you to tie these filter bags directly to your pipe or hose, without the need for a housing. Use them for filtration while filling tanks and drums.

Felt—Felt filter bags have higher debris-holding capacity than mesh filter bags. Also known as bottle-neck bags.

	Material	Max. Temp., ° F	Max. Flow Rate, gpm	Removes Particle Size Down To, μm		Each
Sewn Seam







	Felt

	14"	18"	2	Polyester Plastic	275	28	5 , 10 , 25 , 50 , 75 , 100	0000000	00000


	14"	24"	2	Polyester Plastic	275	40	5 , 10 , 25 , 50 , 75 , 100	0000000	0000
	18"	24"	3	Polyester Plastic	275	49	5 , 10 , 25 , 50 , 75 , 100	0000000	00000
	18"	32"	3	Polyester Plastic	275	69	5 , 10 , 25 , 50 , 75 , 100	0000000	00000
	20"	32"	4	Polyester Plastic	275	74	5 , 10 , 25 , 50 , 75 , 100	0000000	00000
	24"	34"	6	Polyester Plastic	275	98	5 , 10 , 25 , 50 , 75 , 100	0000000	00000

High-Purity Filter Bags for Water

Also known as absolute-rated filter bags, these remove 99% of particles. They provide more consistent particle removal than other filter bags and have high debris-holding capacity for a long service life. Use them with a filter bag housing to remove contaminants from your water line.

Fabric—Fabric filter bags hold more debris than felt filter bags.

												Each
	Dia.	Ht.	Filter Bag Trade Size	Material	Ring Material	Max. Temp., ° F	Max. Flow Rate, gpm	Filter Efficiency	Choose a Construction	Removes Particle Size Down To, μm		1-9	10-Up
Sewn Seam



		4"	8"	3	Polyester Plastic	Metal	300	25	99%	Fabric , Felt	25 , 50 , 100	0000000	000000	00000


		4"	14"	4	Polyester Plastic	Metal	300	50	99%	Fabric , Felt	25 , 50 , 100	0000000	00000	00000
		5 1/2"	21"	8	Polyester Plastic	Metal	300	100	99%	Fabric , Felt	25 , 50 , 100	0000000	00000	00000
		5 1/2"	32"	9	Polyester Plastic	Metal	300	150	99%	Fabric , Felt	25 , 50 , 100	0000000	00000	00000
		7"	32"	2	Polyester Plastic	Metal	300	220	99%	Fabric , Felt	25 , 50 , 100	0000000	00000	00000
		8"	32"	12	Polyester Plastic	Metal	300	275	99%	Fabric , Felt	25 , 50 , 100	0000000	00000	00000

Thread-On Filter Bags for Water


Filter Bag Shown with Threaded Adapter	Filter Bag

Use a threaded adapter (sold separately) with one of these bags to filter water from a threaded pipeline without the need for a housing. The metal ring on the filter bag slips over the raised lip on the adapter to hold the bag in place.

											Each
	Dia.	Ht.	Filter Bag Trade Size	For Pipe Size	Material	Ring Material	Max. Temp., ° F	Max. Flow Rate, gpm	Removes Particle Size Down To, μm		1-9	10-Up
Sewn Seam







				Felt

				4"	8"	3	3/4, 1, 1 1/4	Polyester Plastic	Metal	300	10	1 , 5 , 10 , 15 , 25 , 50 , 100 , 200	000000000	00000	00000


				4"	14"	4	3/4, 1, 1 1/4	Polyester Plastic	Metal	300	15	1 , 5 , 10 , 15 , 25 , 50 , 100 , 200	000000000	0000	0000
				7"	16 1/2"	1	1 1/2, 2	Polyester Plastic	Metal	300	25	1 , 5 , 10 , 15 , 25 , 50 , 100 , 200	000000000	0000	0000
				7"	32"	2	1 1/2, 2	Polyester Plastic	Metal	300	55	1 , 5 , 10 , 15 , 25 , 50 , 100 , 200	000000000	00000	0000

Threaded Adapters

Filter Bag Shown

with Threaded Adapter

	Thread Type	Gender	Material		Each
For 4" Diameter Bags



	1	NPT	Female	Polypropylene	00000000	000000


	1 1/4	NPT	Female	Polypropylene	00000000	00000
	3/4	NPT	Female	Polypropylene	00000000	00000


	For 7" Diameter Bags



			1 1/2	NPT	Female	Polypropylene	00000000	00000


			2	NPT	Female	Polypropylene	00000000	00000

Slip-On Filter Bags for Water

Capture debris as you fill tanks, drums, and other containers. No need for a housing—these filter bags wrap around pipe or hose and secure with a clamp or band (sold separately).

Felt—Felt filter bags have higher debris-holding capacity than mesh filter bags.

								Each
	Dia.	Ht.	Material	Max. Temp., ° F	Max. Flow Rate, gpm	Removes Particle Size Down To, μm		1-9	10-Up
Sewn Seam







				Felt

				7"	18"	Polyester Plastic	300	20	5 , 10 , 15 , 25 , 50 , 75 , 100 , 200	00000000	00000	00000


				7"	33"	Polyester Plastic	300	50	5 , 10 , 15 , 25 , 50 , 75 , 100 , 200	00000000	00000	0000
				14"	36"	Polyester Plastic	300	125	5 , 10 , 15 , 25 , 50 , 75 , 100 , 200	00000000	00000	00000

Long-Life Filter Bags for Organic Acids, Mineral Acid, and Alkali


Seamless	Sewn

Replace your filter bags less frequently—these have greater debris-holding capacity than standard filter bags. Use them with a filter bag housing to remove contaminants from your line.

Sewn Seam—Sewn filter bags are made of two separate bags; the inside bag traps large particles and then the outside bag traps small particles.

											Each
	Dia.	Ht.	Filter Bag Trade Size	Material	Flange Material	Ring Material	Max. Temp., ° F	Max. Flow Rate, gpm	Removes Particle Size Down To, μm		1-9	10-Up
Seamless







				Felt

				7"	16 1/2"	1	Polypropylene	Plastic	—	190	75	1 , 5 , 10 , 25 , 50 , 100	0000000	000000	000000


				7"	32"	2	Polypropylene	Plastic	—	190	135	1 , 5 , 10 , 25 , 50 , 100	0000000	00000	00000


				Sewn Seam







								Felt

								4"	8"	3	Polypropylene	—	Metal	200	25	1 , 5 , 10 , 25 , 50 , 100	0000000	00000	00000


								4"	14"	4	Polypropylene	—	Metal	200	50	1 , 5 , 10 , 25 , 50 , 100	0000000	00000	00000
								5 1/2"	21"	8	Polypropylene	—	Metal	200	100	1 , 5 , 10 , 25 , 50 , 100	0000000	00000	00000
								5 1/2"	32"	9	Polypropylene	—	Metal	200	150	1 , 5 , 10 , 25 , 50 , 100	0000000	00000	00000
								7"	16 1/2"	1	Polypropylene	—	Metal	200	100	1 , 5 , 10 , 25 , 50 , 100	0000000	00000	00000
								7"	32"	2	Polypropylene	—	Metal	200	220	1 , 5 , 10 , 25 , 50 , 100	0000000	00000	00000
								8"	32"	12	Polypropylene	—	Metal	200	275	1 , 5 , 10 , 25 , 50 , 100	0000000	00000	00000

Thread-On Filter Bags for Organic Acids, Mineral Acid, and Alkali


Filter Bag	Filter Bag Shown with Threaded Adapter

Use a threaded adapter (sold separately) with one of these bags to filter acids and alkali from a threaded pipeline without the need for a housing. The metal ring on the filter bag slips over the raised lip on the adapter to hold the bag in place.

											Each
	Dia.	Ht.	Filter Bag Trade Size	For Pipe Size	Material	Ring Material	Max. Temp., ° F	Max. Flow Rate, gpm	Removes Particle Size Down To, μm		1-9	10-Up
Seamless







				Felt

				4"	8"	3	3/4, 1, 1 1/4	Polypropylene	Metal	200	10	1 , 5 , 10 , 15 , 25 , 50 , 100 , 200	000000	00000	00000


				4"	14"	4	3/4, 1, 1 1/4	Polypropylene	Metal	200	15	1 , 5 , 10 , 15 , 25 , 50 , 100 , 200	000000	0000	0000
				7"	16 1/2"	1	1 1/2, 2	Polypropylene	Metal	200	25	1 , 5 , 10 , 15 , 25 , 50 , 100 , 200	000000	00000	0000
				7"	32"	2	1 1/2, 2	Polypropylene	Metal	200	55	1 , 5 , 10 , 15 , 25 , 50 , 100 , 200	000000	00000	00000

Threaded Adapters

Filter Bag Shown

with Threaded Adapter

	Thread Type	Gender	Material		Each
For 4" Diameter Bags



	1	NPT	Female	Polypropylene	00000000	000000


	1 1/4	NPT	Female	Polypropylene	00000000	00000
	3/4	NPT	Female	Polypropylene	00000000	00000


	For 7" Diameter Bags



			1 1/2	NPT	Female	Polypropylene	00000000	00000


			2	NPT	Female	Polypropylene	00000000	00000

Slip-On Filter Bags for Organic Acids, Mineral Acid, and Alkali

Use these filter bags to capture oil and debris as you fill tanks, drums, and other containers. No housing is required—wrap the bags around pipe or hose and secure with a clamp or band (sold separately).

								Each
	Dia.	Ht.	Material	Max. Temp., ° F	Max. Flow Rate, gpm	Removes Particle Size Down To, μm		1-9	10-Up
Sewn Seam







				Felt

				7"	18"	Polypropylene	200	20	5 , 10 , 25 , 50 , 100	0000000	00000	00000


				7"	33"	Polypropylene	200	50	5 , 10 , 25 , 50 , 100	0000000	00000	0000

Filter Bags for Organic Acids, Mineral Acid, and Alkali

Seamless

Use these bags with a filter bag housing to remove contaminants from acids and alkali.

Seamless—Seamless filter bags provide more uniform filtration than filter bags with a seam. They trap very fine particles that can pass through the pinholes in a seam.

										Each
	Dia.	Ht.	Filter Bag Trade Size	Material	Flange Material	Max. Temp., ° F	Max. Flow Rate, gpm	Removes Particle Size Down To, μm		1-9	10-Up
Seamless







				Felt

				7"	16 1/2"	1	Polypropylene	Plastic	190	50	1 , 5 , 10 , 25 , 50 , 100 , 200	0000000	000000	00000


				7"	32"	2	Polypropylene	Plastic	190	100	1 , 5 , 10 , 25 , 50 , 100 , 200	0000000	00000	00000