Chemlock® Filter Housing Technical Information
Our Chemlock® filter housing systems work together to save space, provide safer installations, and safer filter changeouts.
Find detailed information to help ensure safety when installing or maintaining Chemlock filter housings including chemical compatibility with various locking ring and O-ring materials, and proper Chemlock bowl installation procedures.
Technical Information & Safety Quick View
| Attribute | Neat PFA | ESD PFA |
| Surface Resistivity | Not Dissipative | Dissipative |
| Lengths | 5", 10", 20" 30" | 10", 20" |
| Fitting | NPT, Rc, Flaretek, PrimeLock, Pillar S300 | Primelock and Pillar S300 |
| Maximum Pressure | 0.75 MPa (110 psi) @ 25°C | |
| 0.30 MPa (43 psi) @ 100°C* | ||
| Lock Ring Torque | E-FKM (TEV) 45 Nm (33 ft-lbf) | |
| All other O-rings 28.5 Nm (21 ft-lbf) | ||
*PTFE Locking Ring rated to Maxiumum Operating Temperature of 95°C
Chemical Compatibility - Locking Rings
| AQUEOUS ACIDS | AQUEOUS OXIDIZER | AQUEOUS BASES | SOLVENTS | |
| H2SO4, H3PO4, HNO3 | H2O2 | NH4OH, TMAH, KOH | IPA, DMSO | |
| GFPP | Not recommended | Not recommended | Recommended | Recommended |
| PTFE | Recommended | Recommended | Recommended | Recommended |
| PVDF | Recommended | Recommended* | Not recommended | Not recommended |
| Contact Entegris for locking ring compatibility with chemicals not listed. | ||||
*PVDF is recommended up to 720F (220C) in <50% concentration.
WARNING: Using a locking ring that is not fully compatible with your chemical may result in a seriously hazardous condition due to sudden breakage of the locking ring and chemical exposure.
Chemical Compatibility - O-Rings
| Part number | Material | Torque | Temp | Solvents | Acids | Bases | Oxidizer | Notes |
| YY5610102 | E-FKM (TEV) | 45 N•m | <100°C | C | A | C | A | PFA encapsulation provides better cleanliness and compatibility; however, due to diffusion, avoid polar solvents, amines, and anhydrous ammonia |
| YY3510103 | EP | 28.5 N•m | <16°C | C | B | B | C | Good resistance to mild acides, detergents, alkalis; fair to poor ressitance to solvents |
| YY4610108 | Kalrez® 4079 | 28.5 N•m | <100°C | A | A | A | B | Excellent; avoid amines, steam, and ethylene oxide |
| YY561010RJ | Kalrez 6375 | 28.5 N•m | <100°C | A | A | A | A | Excellent compatibility |
| P01002J | Viton® | 28.5 N•m | <100°C | D | A | B | A | Avoid polar solvents, amines, and anhydrous ammonia |
| A = Good; B = Fair; C = Poor; D = Not recommended | ||||||||