What spare parts should I stock? Each site receives a minimum of (1) standard spare parts package with (10) Snap Rings and (4) Link Pins for the FlexLinks™, (1) Drive Sprocket Pin, (4) Stainless Bolts and Nuts for the Scrapers, (1) 3 oz. tube of Never Seez and (1) Snap Ring Tool. Beyond this, Duperon Corporation does not make recommendations for additional spare parts. However, some customers (particularly in remote locations) may choose to stock   (1) spare motor per site, (1) set scrapers and additional Link Pins and Snap Rings.