Aftermarket GRACO® 186652 Washer, backup, piston valve (Non-OEM)

Manufacturer: Total Finishing Supplies

Part Number: 559956

Comparable OEM Part Number: 186652

Description: Total Finishing's part # 18-1846 is a compatible replacement for GRACO® parts 186652 and 186-652, a backup washer for 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® 190 Classic, GRACO® 190 ES Plus, GRACO® 210 ES Plus, GRACO® 290 Classic, GRACO® 390 Classic, GRACO® 395 st Pro and other compatible equipment.

Common reasons for replacement:

• 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
• Renewed together with the seal it backs

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

Comparable to GRACO® 186-652