Description
Our trade-size felt media strainer bags operate on the principle of depth filtration, resulting in superior dirt-holding capacity compared to woven bags.
- Can retain both gelatinous and non-deformable solids
- Effective capture of lightweight particles
- While disposable, these bags can also provide limited reusability with backflushing
- Inexpensive even for ratings 25 microns and below
- Sewn seams standard (contact us for welded seams)
Sizes
-
- #1 (P1) – 7.06″ dia. x 16.5″ length
- #2 (P2) – 7.06″ dia. x 32.0″ length
- #3 (P3) – 4.12″ dia. x 8.0″ length
- #4 (P4) – 4.12″ dia. x 14.0″ length
- Contact us for custom shapes and sizes or for industry-standard sizes not listed here
Materials
- PES – Polyester with a singed finish to minimize media migration, temperature rating to 275°F (135°C)
- POG – Polypropylene with a glazed or calendared finish to minimize media migration, temperature rating to 200°F (93°C)
- Both media materials meet FDA regulations for food contact under CFR21, Section 177.1520
- Silicone-free construction
- Broad chemical compatibility
Ring and Flange Styles
- Polypropylene (PP) ring (handles are standard on bags with this option)
- Stainless steel (SS) ring (handles are standard on bags with this option)
- Drawstring (DS)
- F-style (F) flange compatible with Pall and FSI Polyloc® equipment (available for sizes #1 and #2)
- P-style (P) flange compatible with Eaton filtration equipment
- RP-style (RP) flange compatible with Ronningen-Petter filtration equipment (available for sizes #3 and #4)
- OSS-style (OSS) flange compatible with Rosedale filtration equipment
Chemical Compatibility
| Compatibility | Polyester | Polypropylene |
|---|---|---|
| Effect of weak acids | Resistant | None |
| Effect of strong acids | Slow attack by concentrated oxidizing acids | Slow attack by oxidizing acids such as nitric acid |
| Effect of weak alkalies | Resistant | None |
| Effect of strong alkalies | Attacked by concentrated alkalies | Very resistant |
| Effect of organic solvents | Resistant to aliphatic hydrocarbons, oils, fats, & alcohols. Slight attack by halogenated hydrocarbons, some keytones, & ethylene dichloride. | Resistant to 140°F. Soluble above 175°F in some aeromatic & chlorinated hydrocarbons. |
| Melting temperature | 435°F | 340°F |
| Max recommendable temperature | 250°F | 160°F |
| Notes | For meshes, polyester is weaker than nylon monofilament media | Chemically compatible with ethanol |
See also the Cole-Parmer Chemical Compatibility Database.
