HyplexPrime Ceramic Plunger Assembly

The HyplexPrime Ceramic Plunger Assembly is an OEM replacement plunger for Flow HyPlex Prime and Eagle-style direct-drive pump assemblies. The ceramic plunger provides the precision sealing surface required for high-pressure water delivery, helping maintain smooth reciprocating motion, consistent pressure output, and long seal life. Replace this assembly when the plunger surface is chipped, grooved, cracked, or contributing to premature dynamic seal wear.

Related products:

• HyPlex Major Maintenance Kit (712101-2) — includes multiple high-pressure wear parts for a complete HyPlex Prime and HyPlex Hybrid pump overhaul.
• HyPlex Minor Maintenance Kit (712101-1) — a scheduled-service kit commonly used alongside plunger and seal maintenance.
• Hyplex 55K Eagle Dynamic Seal 5/16 Inch ID (011051-1) — the primary seal that runs against the ceramic plunger surface.
• Direct Drive Seal Carrier Assembly (013933-1) — supports the rod-pack sealing components around the plunger.
• Direct Drive Check Valve Assembly 55K (013385-1) — helps maintain pressure stability in the same direct-drive high-pressure system.

Service tip: Always inspect the dynamic seals, rod seals, seal carrier, and high-pressure cylinder when replacing a ceramic plunger. A damaged seal surface or worn support component can quickly shorten the life of a new plunger assembly.