SKF

Large Diameter Seals (Machined)

Large diameter seals are a special focus of SKF’s machined seals capability, addressing the extreme dimensions found in hydropower turbines (up to several metres diameter), marine propeller shaft seals, tunnel boring machine main bearing seals, and large-diameter slip rings. These seals often operate under high radial loads, slow to moderate speeds, and heavy contamination. SKF uses SEAL JET to produce these oversized seals in multiple segments if required, with precisely machined splice joints that maintain sealing integrity. Materials are selected for the specific water, oil, or grease environment. The ability to deliver a high-performance, custom-fitted large diameter seal within weeks, rather than the months required for a custom mould, provides enormous value to plant operators who need to minimise asset downtime.