An economically priced alternative to PEEK, this series of PPS ¼-28 nuts offers three low-pressure sealing options: inverted ferrule, flanged with washer, or VICI Jour’s patented collapsible ferrule.
These nuts provide excellent chemical and pressure resistance for 1/16” or ⅛” tubing (and 1/32” with inverted ferrule). They are fingertight when used with our Color-Sleeve adapters.
TECH TIPS
Color-Sleeve adapters turn PPS nuts into fingertight fittings and color-code different solvent lines for easy identification.
A PPS nut may also be used with a PEEK ferrule and stainless-steel bushing for high-pressure applications.
CHEMICAL RESISTANCE OF PPS
A = suitable
B = marginal
C = not recommended
Chemical class |
Resistance |
Acids, organic
|
A |
Acids, inorganic |
B / C* |
Aldehydes |
A |
Alcohols |
A |
Bases |
B |
Esters |
A |
Halogenated org. |
A/B |
Hydrocarbons |
A |
Ketones |
A |
* Not recommended for use with concentrated halogen acids
For more detailed chemical resistance information, refer to Chemical Resistance of PEEK and other Polymers