Aftermarket GRACO® 181338 Washer, backup, u-cup (Non-OEM)

Manufacturer: Total Finishing Supplies

Part Number: 544014

Comparable OEM Part Number: 181338

Description: Total Finishing's part # 18-1301 is a compatible replacement for GRACO® parts 181338 and 181-338 — the backup washer used in GRACO® spray equipment. A backup washer sits behind a seal or O-ring and gives it a rigid shoulder, preventing the softer seal from extruding into the clearance gap under pressure. Compatible with GRACO® EM 590.

Common reasons for replacement:

• Renewed together with the seal it backs
• Adjacent seal or O-ring failing early from extrusion
• Visible deformation or cupping of the washer
• Pressure weep past a seal the washer should support

Manufactured to OEM-equivalent dimensions for proper fit and performance.

Comparable to GRACO® 181-338