DANCO O-Ring Assortment (14-Piece) 80788 - The Home Depot
Centering Ring KF 25 With Viton® O-Ring, KF 25 (NW 25), Stainless Steel, The centering ring contains a rubber elastomeric o-ring. Those are also recognized as NW10, NW16, NW25, NW40, or KF-10
https://www.allworldmachinery.com/itemdetail/P-25
R-25 O-Ring (ID: 33 mm, CS: 3.5 mm, OD: 40 mm) by X1 Tools (10 to 120 O- Rings) | eBay
25 O-Ring (4 per Card) - Danco
Ideal Vacuum | #25 Viton O-Ring for 25 mm ID Glass Vessels O-ring Joint #217 O-Ring V-217-75A
25" Wheel Loader Tire O-ring (Small Size)
Amazon.com: KEX Single 25" inch Wheel ORing 15.5x25, 17.5X25, 20.5X25 Earth Mover Grader Tire O-Ring : Automotive
20PC/lot Rubber Ring NBR Sealing O-Ring 5mm OD22/25/28/30/32/34/35/36/38/40/42/45/48/50mm Nitrile O Ring Seal Oring Gasket Ring - AliExpress
Ultralight Ball O-Ring (25-Pack) O-RING-BALL25PK B&H Photo Video