Graco 277358 Pump Seal Repair Kit

Compatible Pumps & Machines

• 4‑Ball Displacement Pump Lowers – 4‑Ball style pump assemblies where the OEM UHMWPE piston seal repair kit (#277358) is used for standard piston sealing. :contentReference[oaicite:1]{index=1}
• Pump Ratios (2:1 & 3.5:1) – UHMWPE piston seal kit 277358 is listed for specific 4‑Ball pump ratio variants (example: 2:1 and 3.5:1 lower sections). :contentReference[oaicite:2]{index=2}
• Other Graco Displacement Series – Any pump lower that references part #277358 in the official Graco parts index for UHMWPE piston seal service. :contentReference[oaicite:3]{index=3}

Product Overview

The Graco 277358 Kit, Repair, Pump Seal is a genuine Graco UHMWPE piston seal repair kit designed to replace worn piston sealing components in select 4‑Ball displacement pump lower assemblies. UHMWPE seals deliver strong wear resistance and maintain reliable pump sealing performance in demanding industrial applications. :contentReference[oaicite:4]{index=4}

Specifications & Key Details

Frequently Asked Questions