One New Aftermarket Replacement Dipper Arm Dust Seal for Kobelco Crawler ExcavatorsThis aftermarket replacement dipper arm dust seal (also known as a bucket pin seal) fits the dipper stick arm assembly on Kobelco crawler excavators. The seal keeps contaminants out of the dipper arm pin bore, protecting bushings and pins from premature wear. Part number 2445R220D4 measures 78.7mm ID x 95mm OD x 5mm thick.Specifications Inside Diameter: 78.7mm Outside Diameter: 95mm Thickness: 5mm Type: Dust / Oil Seal (Bucket Pin / Dipper Arm) Compatible ModelsKobelco Crawler Excavators: SK170, SK200, SK210-8, SK210-9, SK220, SK220LC, SK235SR, SK250, SK260, SK270, SK295-8, SK350-8, SK350-9, 200-8, 230SR-3, 260SR-3, K907, MD200CReplaces Part Number(s):2445R220D4, 2445R220D4-ANew aftermarket replacement part - not remanufactured, not used.