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When a worn or leaking rotary shaft seal causes oil contamination, bearing failure, or messy drips on your equipment, finding an exact-fit replacement becomes urgent. These metric TC rotary oil shaft seals are engineered for mechanics, equipment rebuilders, and workshop professionals who need a dependable drop-in solution across a wide range of shaft diameters from 32mm to 38mm (approximately 1.26" to 1.50").
Each seal is constructed from FKM (fluoroelastomer / Viton-type) rubber, known for its resistance to heat, petroleum-based oils, and many synthetic lubricants. The TC double-lip design features a primary sealing lip to retain lubricant and a secondary dust lip to exclude contaminants. Inner diameters range from 32–38mm, outer diameters from 42–90mm, and depths from 4–12mm (approximately 0.16"–0.47"). Each listing is sold in a pack of 2 pieces.
Typical applications include gearbox output shaft seals, axle pinion seals, pump shaft seals, and agricultural or industrial equipment rebuilds where metric TC oil seals with FKM compound are specified. Long-tail use cases include replacing leaking rear axle seals on compact tractors, resealing hydraulic pump shafts, and restoring differential pinion seals on metric-dimensioned drivetrains.
Resists petroleum oils, synthetic lubricants, and elevated operating temperatures — suitable for demanding gearbox and drivetrain environments.
Primary lip retains lubricant; secondary dust exclusion lip prevents ingress of dirt, moisture, and debris for extended seal life.
Inner shaft diameters from 32–38mm, outer diameters from 42–90mm, and depths from 4–12mm — covering a broad spectrum of metric equipment applications.
Rigid outer metal case ensures accurate press-fit into the housing bore and maintains concentricity under operating loads.
Internal garter spring maintains consistent radial lip pressure on the shaft surface, compensating for minor shaft runout and wear over time.
Each order includes 2 seals — ideal for axle pairs, pump rebuilds, or keeping a spare on hand for planned maintenance intervals.
| Seal Type | TC (Double Lip with Dust Exclusion Lip) |
|---|---|
| Material | FKM (Fluoroelastomer / Viton-type) |
| Inner Diameter (Shaft Ø) | 32–38mm (approx. 1.26"–1.50") |
| Outer Diameter (Housing Bore) | See variant options |
| Depth / Width | See variant options |
| Outer Case | Metal-cased (steel shell) |
| Spring Type | Garter spring |
| Lip Configuration | Double lip (primary sealing + secondary dust lip) |
| Temperature Range | Typically –20°C to +200°C (–4°F to +392°F) |
| Compatible Fluids | Petroleum oils, synthetic gear oils, hydraulic fluids (FKM-compatible) |
| Packing Quantity | 2 pieces per order |
| Standard | Metric (DIN / ISO dimensional series) |
Measure three dimensions on your existing seal or housing: the inner diameter (shaft Ø), the outer diameter (housing bore Ø), and the depth (width). All three must match your housing and shaft. Cross-reference with your equipment service manual or measure the worn seal directly with calipers. Select the matching variant from the dropdown above.
"TC" refers to a double-lip seal design: the primary lip seals against the rotating shaft to retain lubricant, while the secondary lip acts as a dust and debris exclusion barrier. This dual-lip configuration provides better contamination resistance compared to single-lip (SC) seals, making TC seals the standard choice for gearboxes, axles, and pumps.
FKM fluoroelastomer is compatible with most petroleum-based gear oils, synthetic gear oils (GL-4, GL-5), hydraulic fluids, and many ATF formulations. It offers superior resistance to high temperatures and oil degradation compared to NBR (nitrile) seals. If your application uses water-glycol hydraulic fluids or certain ester-based synthetics, verify FKM compatibility with your fluid supplier before installation.
FKM seals typically operate reliably from approximately –20°C to +200°C (–4°F to +392°F). This makes them suitable for high-temperature gearbox and drivetrain applications where standard NBR seals may harden or crack prematurely. Always verify the specific operating temperature of your equipment against this range.
TC oil seals with a metal outer case are typically pressed into the housing bore using a seal driver or a flat-faced socket of the correct outer diameter. Avoid hammering directly on the seal face, as this can distort the case or damage the lip. Lightly lubricating the outer case with clean oil aids installation. The shaft lip should also be lightly oiled before the shaft is inserted to prevent dry-start damage.
Many applications — such as rear axle assemblies, gearbox input/output shafts, or pump pairs — require two seals of the same size. Selling in packs of 2 ensures you have both seals on hand for a complete rebuild without a second order. It also provides a spare for future maintenance intervals, reducing downtime.
Common signs of a failed rotary shaft seal include visible oil weeping or dripping around the shaft exit point, oil contamination on brake components or adjacent parts, and a film of oil on the shaft behind the seal. If you notice any of these symptoms during inspection, measure the existing seal and order the matching replacement size from the variant selector above.
