Felt Filter Bags | McMaster-Carr

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80 Products

About Filter Bags

About Filters and Particle Sizes

Seamless

Sewn

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

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 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, microns		1-9	10-Up
Seamless
Felt
4"	8"	3	Polyester Plastic	Plastic	__	200°	25	1, 5, 10, 25, 50, 100, 200	00000000	00000	00000
4"	14"	4	Polyester Plastic	Plastic	__	200°	50	1, 5, 10, 25, 50, 100, 200	00000000	0000	0000
5 1/2"	21"	8	Polyester Plastic	Plastic	__	200°	100	1, 5, 10, 25, 50, 100, 200	00000000	00000	0000
5 1/2"	32"	9	Polyester Plastic	Plastic	__	200°	150	1, 5, 10, 25, 50, 100, 200	00000000	00000	0000
7"	16 1/2"	1	Polyester Plastic	Plastic	__	200°	100	1, 5, 10, 25, 50, 100, 200	00000000	00000	0000
7"	16 1/2"	1	Polyester Plastic	Plastic	__	300°	50	1, 5, 10, 25, 50, 100, 200	0000000	00000	0000
7"	32"	2	Polyester Plastic	Plastic	__	200°	220	1, 5, 10, 25, 50, 100, 200	00000000	00000	00000
7"	32"	2	Polyester Plastic	Plastic	__	300°	100	1, 5, 10, 25, 50, 100, 200	0000000	00000	00000
8"	32"	12	Polyester Plastic	Plastic	__	200°	275	1, 5, 10, 25, 50, 100, 200	0000000	00000	00000
Sewn
Felt
4"	8"	3	Polyester Plastic	__	Metal	300°	25	1, 5, 10, 25, 50, 100, 200	00000000	0000	0000
4"	14"	4	Polyester Plastic	__	Metal	300°	50	1, 5, 10, 25, 50, 100, 200	00000000	0000	0000
5 1/2"	21"	8	Polyester Plastic	__	Metal	300°	100	1, 5, 10, 25, 50, 100, 200	00000000	0000	0000
5 1/2"	32"	9	Polyester Plastic	__	Metal	300°	150	1, 5, 10, 25, 50, 100, 200	00000000	0000	0000
7"	16 1/2"	1	Polyester Plastic	__	Metal	300°	100	1, 5, 10, 25, 50, 100, 200	00000000	0000	0000
7"	32"	2	Polyester Plastic	__	Metal	300°	220	1, 5, 10, 25, 50, 100, 200	00000000	00000	0000
8"	32"	12	Polyester Plastic	__	Metal	300°	275	1, 5, 10, 25, 50, 100, 200	00000000	00000	0000

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 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 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, microns		1-9	10-Up
Seamless
Felt
7"	16 1/2"	1	Polyester Plastic	Plastic	__	300°	75	1, 5, 10, 25, 50, 100	0000000	000000	000000
7"	32"	2	Polyester Plastic	Plastic	__	300°	135	1, 5, 10, 25, 50, 100	0000000	00000	00000
Sewn
Felt
4"	8"	3	Polyester Plastic	__	Metal	300°	25	1, 5, 10, 25, 50, 100	0000000	00000	00000
4"	14"	4	Polyester Plastic	__	Metal	300°	50	1, 5, 10, 25, 50, 100	0000000	00000	00000
5 1/2"	21"	8	Polyester Plastic	__	Metal	300°	100	1, 5, 10, 25, 50, 100	0000000	00000	00000
5 1/2"	32"	9	Polyester Plastic	__	Metal	300°	150	1, 5, 10, 25, 50, 100	0000000	00000	00000
7"	16 1/2"	1	Polyester Plastic	__	Metal	300°	100	1, 5, 10, 25, 50, 100	0000000	00000	00000
7"	32"	2	Polyester Plastic	__	Metal	300°	220	1, 5, 10, 25, 50, 100	0000000	00000	00000
8"	32"	12	Polyester Plastic	__	Metal	300°	275	1, 5, 10, 25, 50, 100	0000000	00000	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 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	Construction	Removes Particle Size Down To, microns		1-9	10-Up
Sewn
4"	8"	3	Polyester Plastic	Metal	300°	25	99%	Felt	25, 50, 100	0000000	000000	00000
4"	14"	4	Polyester Plastic	Metal	300°	50	99%	Felt	25, 50, 100	0000000	00000	00000
5 1/2"	21"	8	Polyester Plastic	Metal	300°	100	99%	Felt	25, 50, 100	0000000	00000	00000
5 1/2"	32"	9	Polyester Plastic	Metal	300°	150	99%	Felt	25, 50, 100	0000000	00000	00000
7"	32"	2	Polyester Plastic	Metal	300°	220	99%	Felt	25, 50, 100	0000000	00000	00000
8"	32"	12	Polyester Plastic	Metal	300°	275	99%	Felt	25, 50, 100	0000000	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 filter bags have higher debris-holding capacity than mesh filter bags. Also known as bottle-neck bags.

Sewn
For Pipe Size	Dia.	Ht.	Material	Max. Temp., °F	Max. Flow Rate, gpm	Removes Particle Size Down To, microns		Each
Felt
2	14"	18"	Polyester Plastic	275°	28	5, 10, 25, 50, 75, 100	0000000	00000
2	14"	24"	Polyester Plastic	275°	40	5, 10, 25, 50, 75, 100	0000000	0000
3	18"	24"	Polyester Plastic	275°	49	5, 10, 25, 50, 75, 100	0000000	00000
3	18"	32"	Polyester Plastic	275°	69	5, 10, 25, 50, 75, 100	0000000	00000
4	20"	32"	Polyester Plastic	275°	74	5, 10, 25, 50, 75, 100	0000000	00000
6	24"	34"	Polyester Plastic	275°	98	5, 10, 25, 50, 75, 100	0000000	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 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, microns		1-9	10-Up
Sewn
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	0000	0000
14"	36"	Polyester Plastic	300°	125	5, 10, 15, 25, 50, 75, 100, 200	00000000	00000	00000

Thread-On Filter Bags for Water

Filter Bag Shown with Threaded Adapter

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.

Filter Bag

									Each
Dia.	Ht.	For Pipe Size	Material	Ring Material	Max. Temp., °F	Max. Flow Rate, gpm	Removes Particle Size Down To, microns		1-9	10-Up
Sewn
Felt
4"	8"	3/4, 1, 1 1/4	Polyester Plastic	Metal	300°	10	1, 5, 10, 15, 25, 50, 100, 200	000000000	00000	00000
4"	14"	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 1/2, 2	Polyester Plastic	Metal	300°	25	1, 5, 10, 15, 25, 50, 100, 200	000000000	0000	0000
7"	32"	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

For 4" Bag Dia.
Pipe Size	Thread Type	Gender	Material		Each
1	NPT	Female	Polypropylene Plastic	00000000	000000
1 1/4	NPT	Female	Polypropylene Plastic	00000000	00000
3/4	NPT	Female	Polypropylene Plastic	00000000	00000
For 7" Bag Dia.
1 1/2	NPT	Female	Polypropylene Plastic	00000000	00000
2	NPT	Female	Polypropylene Plastic	00000000	00000

Filter Bags for Petroleum Oil and Organic Solvents

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

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, microns		1-9	10-Up
Sewn
Felt
4"	8"	3	Nomex Plastic	Metal	400°	25	1, 5, 10, 25, 50, 100, 200	000000000	000000	000000
4"	14"	4	Nomex Plastic	Metal	400°	50	1, 5, 10, 25, 50, 100, 200	000000000	00000	00000
5 1/2"	21"	8	Nomex Plastic	Metal	400°	75	1, 5, 10, 25, 50, 100, 200	000000000	00000	00000
5 1/2"	32"	9	Nomex Plastic	Metal	400°	90	1, 5, 10, 25, 50, 100, 200	000000000	00000	00000
7"	16 1/2"	1	Nomex Plastic	Metal	400°	90	1, 5, 10, 25, 50, 100, 200	000000000	00000	00000
7"	32"	2	Nomex Plastic	Metal	400°	180	1, 5, 10, 25, 50, 100, 200	000000000	00000	00000
8"	32"	12	Nomex Plastic	Metal	400°	275	1, 5, 10, 25, 50, 100, 200	000000000	00000	00000

Long-Life Filter Bags for Organic Acids, Mineral Acids, and Alkalies

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 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, microns		1-9	10-Up
Seamless
Felt
7"	16 1/2"	1	Polypropylene Plastic	Plastic	__	190°	75	1, 5, 10, 25, 50, 100	0000000	000000	000000
7"	32"	2	Polypropylene Plastic	Plastic	__	190°	135	1, 5, 10, 25, 50, 100	0000000	00000	00000
Sewn
Felt
4"	8"	3	Polypropylene Plastic	__	Metal	200°	25	1, 5, 10, 25, 50, 100	0000000	00000	00000
4"	14"	4	Polypropylene Plastic	__	Metal	200°	50	1, 5, 10, 25, 50, 100	0000000	00000	00000
5 1/2"	21"	8	Polypropylene Plastic	__	Metal	200°	100	1, 5, 10, 25, 50, 100	0000000	00000	00000
5 1/2"	32"	9	Polypropylene Plastic	__	Metal	200°	150	1, 5, 10, 25, 50, 100	0000000	00000	00000
7"	16 1/2"	1	Polypropylene Plastic	__	Metal	200°	100	1, 5, 10, 25, 50, 100	0000000	00000	00000
7"	32"	2	Polypropylene Plastic	__	Metal	200°	220	1, 5, 10, 25, 50, 100	0000000	00000	00000
8"	32"	12	Polypropylene Plastic	__	Metal	200°	275	1, 5, 10, 25, 50, 100	0000000	00000	00000

Filter Bags for Organic Acids, Mineral Acids, and Alkalies

Seamless

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

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, microns		1-9	10-Up
Seamless
Felt
7"	16 1/2"	1	Polypropylene Plastic	Plastic	190°	50	1, 5, 10, 25, 50, 100, 200	0000000	000000	00000
7"	32"	2	Polypropylene Plastic	Plastic	190°	100	1, 5, 10, 25, 50, 100, 200	0000000	00000	00000

Thread-On Filter Bags for Organic Acids, Mineral Acids, and Alkalies

Use a threaded adapter (sold separately) with one of these bags to filter acids and alkalies 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.

Filter Bag

Filter Bag Shown with Threaded Adapter

										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, microns		1-9	10-Up
Seamless
Felt
4"	8"	3	3/4, 1, 1 1/4	Polypropylene Plastic	Metal	200°	10	1, 5, 10, 15, 25, 50, 100, 200	000000	00000	00000
4"	14"	4	3/4, 1, 1 1/4	Polypropylene Plastic	Metal	200°	15	1, 5, 10, 15, 25, 50, 100, 200	000000	0000	0000
7"	16 1/2"	1	1 1/2, 2	Polypropylene Plastic	Metal	200°	25	1, 5, 10, 15, 25, 50, 100, 200	000000	00000	0000
7"	32"	2	1 1/2, 2	Polypropylene Plastic	Metal	200°	55	1, 5, 10, 15, 25, 50, 100, 200	000000	00000	00000

Threaded Adapters

Filter Bag Shown with Threaded Adapter

For 4" Bag Dia.
Pipe Size	Thread Type	Gender	Material		Each
1	NPT	Female	Polypropylene Plastic	00000000	000000
1 1/4	NPT	Female	Polypropylene Plastic	00000000	00000
3/4	NPT	Female	Polypropylene Plastic	00000000	00000
For 7" Bag Dia.
1 1/2	NPT	Female	Polypropylene Plastic	00000000	00000
2	NPT	Female	Polypropylene Plastic	00000000	00000

Slip-On Filter Bags for Organic Acids, Mineral Acids, and Alkalies

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, microns		1-9	10-Up
Sewn
Felt
7"	18"	Polypropylene Plastic	200°	20	5, 10, 25, 50, 100	0000000	00000	00000
7"	33"	Polypropylene Plastic	200°	50	5, 10, 25, 50, 100	0000000	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 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	Specifications Met	Removes Particle Size Down To, microns		1-9	10-Up
Seamless
Felt
4"	8"	3	Polypropylene Plastic	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	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	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	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
Felt
5 1/2"	21"	8	Polypropylene Plastic	__	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 Plastic	__	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 Plastic	__	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