Techcon TSD1400-010CPK O-Ring, 1/4 in ID x 1/16 in EPR (Pack of 10)

Description

This EPR O-ring seats inside Techcon TS1400 series precision dispensing valves and is one of the dispensing valve parts chosen when the dispensed fluid is a polar solvent, a ketone, or a water based system that would swell a Buna-N seal. Inside diameter is 1/4 in, cross section 1/16 in, and the pack holds 10 rings for a full valve rebuild or a run of spares.

Where dispensing valve parts in EPR earn their spot

Potting and encapsulation lines running water reducible resins, and stations dispensing cleaners, degreasers, or ketone thinned formulations, wear through Buna-N seals fast. Swapping to the EPR version of the same dispensing valve parts family stops the swelling and softening that shows up as a sluggish valve or a bead that goes ragged mid run.

EPR performance for this dispensing valve parts application

Ethylene propylene rubber runs from about negative 60 F to 300 F and holds up against polar solvents, ketones such as acetone, steam, hot water, dilute acids and alkalis, and alcohols. It is a poor match for petroleum oils and greases, where the Buna-N version in the same TSD1400 line is the right call instead. Picking the material by chemistry first avoids a seal failure that looks like a valve problem. When in doubt, check the fluid’s technical data sheet for elastomer compatibility before ordering, since the wrong material can pass a quick bench test and still fail after weeks of continuous cycling.

Specifications

Match the seal material to the fluid before you match the size. Browse the full range of dispensing valves, mixers, and nozzles to round out a rebuild kit. For dispensing setup and valve maintenance guidance, see Techcon.

Need Help?

Need help picking Buna-N versus EPR for your fluid chemistry? Call (800) 220-1966 or email [email protected].