Unknown 387V74 Link Belt O-Ring Seal Lot of 2

O-ring seal set used in Link-Belt machinery hydraulic or gearbox assemblies for fluid sealing applications. Designed to prevent leaks between mating surfaces under pressure and vibration. Commonly used in bearings, reducers, and drive systems. Specifications:Part Number: 387V74Type: O-ring Seal Kit (Lot of 2)Material: Nitrile Rubber (NBR) – standard industrial gradeColor: BlackInner Diameter: Approx. 3.50 in (88.9 mm)Cross Section: Approx. 0.210 in (5.33 mm)Hardness: 70 Shore ATemperature Range: -30°C to +120°CPressure Rating: Up to 1500 psi (depending on application)Chemical Compatibility: Petroleum oils, hydraulic fluids, water-glycol fluids, air, and some greasesApplication: Link-Belt bearing housings, reducers, and gear drivesPackage Quantity: 2 unitsCountry of Manufacture: USA Please review pictures carefully and let us know if you have any questions!