15X2.5 Oring 15mm ID X 2.5mm CS FKM FKM ShA 75 Black O ring O ring Sealing Rubber|seal rubber|o ring o-ringo-ring seal - AliExpress
15X2.65mm (NBR) Buna-N 70 Duro O-Ring 100 Pieces - Oil Seal Online Supplier : oil seal | mechanical seal | hydraulic seals | lip seal | o ring kit | x ring