HD superior interference — most comprehensive wiping action, optimal seal, prevents material backflow

Minimizes costly waste — perfectly matched cartridge contours, complete material extraction every use

High-grade materials — resists chemical degradation, long-term reliability with aggressive compounds

Precision molding — smooth operation, predictable dispensing pressure, consistent unit to unit

The flagship Semco® HD Wiper Plunger features superior interference properties — providing the most comprehensive wiping action on the cartridge's interior diameter. This advanced design creates an optimal seal that prevents material backflow and ensures consistent, precise dispensing with every application. The HD superior interference fit maintains maximum continuous contact — delivering the most comprehensive wiping performance and zero backflow.

Crafted to perfectly match cartridge contours — ensuring 100% product dispensing efficiency and minimizing costly material waste. The most comprehensive wiping action combined with perfectly matched cartridge contours guarantees complete material extraction from every cartridge. In high-volume aerospace and industrial operations, 100% dispensing efficiency translates directly to measurable cost savings and enhanced operational performance.

Manufactured using high-grade materials that resist chemical degradation — ensuring long-term reliability even when used with aggressive compounds. This chemical resistance is critical for aerospace, industrial, and specialty material applications where solvents, adhesives, sealants, and aggressive specialty materials can compromise standard plunger materials. The HD construction maintains structural integrity and superior interference properties throughout the entire service life.

The precision molding process guarantees dimensional consistency across all units — resulting in smooth operation and predictable dispensing pressure throughout the entire application process. Every HD Wiper Plunger is manufactured to identical dimensional specifications — ensuring consistent performance from unit to unit, batch to batch. The dimensional consistency eliminates variability — delivering smooth, predictable operation for consistent, precise dispensing with every application.

Specifically engineered to seamlessly integrate with 2.5 oz, 6 oz, 8 oz, and 12 oz Semco® cartridges — delivering unmatched compatibility and performance. The precision-crafted design perfectly matches cartridge contours — ensuring consistent performance across all compatible cartridge sizes. Complete your dispensing solution with Semco® end caps for secure sealing and cap seals for airtight storage between uses.

Choose our precision molded plungers for superior dispensing performance across industrial adhesives, sealants, and specialty materials applications. Available in three distinct styles, each offering unique functional characteristics tailored to specific application requirements. Enhance performance with pneumatic dispensing guns for efficient controlled application, manual dispensing guns for hands-on precision, and pneumatic hoses to connect air supply to pneumatic dispensing systems.

Insert HD plunger — 2.5 oz, 6 oz, 8 oz, or 12 oz Semco® cartridge, perfectly matched contours

HD superior interference — optimal seal created, prevents material backflow, zero bypass

Predictable pressure — smooth operation, consistent precise dispensing, every application

100% dispensing efficiency — most comprehensive wipe, minimized waste, complete extraction

HD superior interference — optimal seal, prevents material backflow, consistent precise dispensing every application

Minimizes costly waste — perfectly matched cartridge contours, complete extraction, measurable cost savings

High-grade materials — resists chemical degradation, long-term reliability with aggressive compounds

Precision molding — smooth operation, predictable dispensing pressure, consistent unit to unit