Skeleton Oil Seal

Skeleton oil seals are rotating shaft seals composed of a metal skeleton and rubber composite. They achieve bidirectional sealing through spring preload and lip design, effectively preventing lubricant leakage and blocking external contaminants. They are widely used in bearings and gearboxes of vehicles, construction machinery, and other equipment. 1. Three-component integration: Metal skeleton (steel/stainless steel), rubber seal body (NBR/FKM), and self-tensioning spiral spring form a composite structure combining rigid support with elastic sealing. 2. Lip design: Primary sealing lip prevents oil leakage, secondary lip guards against dust. Certain models employ corrugated lips (e.g., SKF WAVE design) to reduce friction by 30%. Inner Diameter Range: 3.2mm (micro seals) to 1500mm (extra-large industrial seals) Outer Diameter Tolerance: Typically controlled per ISO 6194-1 standard, with interference fit design Thickness Specifications: 6.35mm (standard type) to 18.5mm (heavy-duty composite seals) Crankshaft Shaft Seal

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