Felt Filters | McMaster-Carr

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About Selecting Wool Felt

Filter Felt

Remove particles from water, organic solvents, petroleum, and weak alkalies.

Chemical-Resistant Filter Felt

This felt offers better resistance to acids and alkalies than standard filter felt.

Filter Bags

Filter Bags for Water

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

Long-Life Filter Bags for Water

Replace your filter bags less frequently—these have greater debris-holding capacity than standard filter bags.

High-Purity Filter Bags for Water

Also known as absolute-rated filter bags, these remove 99% of particles.

Tie-On Filter Bags for Water

A drawstring at the opening allows you to tie these filter bags directly to your pipe or hose.

Slip-On Filter Bags for Water

These filter bags wrap around pipe or hose and secure with a clamp or band.

Thread-On Filter Bags for Water

Use a threaded adapter with one of these bags to filter water from a threaded pipeline.

Filter Bags for Petroleum Oil and Organic Solvents

Use with a filter bag housing.

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

Replace your filter bags less frequently—these have greater debris-holding capacity than standard filter bags. Use with a filter bag housing.

Filter Bags for Organic Acids,
Mineral Acids, and Alkalies

Use with a filter bag housing.

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

Use a threaded adapter with one of these bags to filter liquids from a threaded pipeline.

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

These filter bags wrap around pipe or hose and secure with a clamp or band.

Filter Bags for Food and Beverage

Made of FDA-listed materials, these bags are suitable for contact with food and beverage.

Felt

Firm Felt Discs

Firm Felt Cords

Firm Felt Sheets and Strips

Soft Felt Sheets and Strips

Soft Felt Lining Sheets

Line toolboxes and drawers to cushion and protect small parts.

Hard Felt

Made of 100% wool, this is the hardest felt we offer, yet it can still be used for polishing. It is more abrasion resistant and better at damping vibration than other felt. Includes S2-32, S2-24, and S2-20 felt grades.

Synthetic Felt

This synthetic felt is an economical alternative to wool felt.

High-Temperature Felt

This Nomex aramid felt withstands temperatures three times as high as wool felt. It is chemical resistant and often used as insulation.