40MM OD, 27MM ID TPU Washer (o-ring) for 1.5" Lay Flat Hose

2 Models with different thicknesses, 2.5mm / 3mm included

• Print with preferred TPU
• No support
• High infill (55%)

Example: https://www.amazon.com/Backwash-Swimming-Discharge-Reinforced-Aluminum/dp/B07PNVK91R/