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When a worn or incorrectly sized shaft seal lets lubricant escape and contaminants in, the downstream damage to bearings, gearboxes, and hydraulic assemblies can be costly. Engineers, mechanics, and serious DIYers who need a dependable metric rotary shaft seal will find this TC-type oil seal engineered to hold up under continuous rotation and moderate pressure.
Each seal is a dual-lip (TC/FB) skeleton construction with a metal case insert for dimensional stability. Inner diameters span 8 mm to 38 mm (approx. 0.31 in – 1.50 in), outer diameters and heights vary by variant — select your exact ID × OD × Height combination from the dropdown. The sealing lip material is elastomeric rubber (NBR-type, conservatively inferred from standard TC seal construction), suited for petroleum-based lubricants and general industrial fluids.
Typical use cases include automotive gearbox output shafts and differential pinion seals, small engine crankshaft and camshaft sealing, hydraulic pump shaft seals, and agricultural or power-tool gearbox rebuilds — anywhere a metric rotary shaft seal with a standardized TC profile is required.
Primary sealing lip retains lubricant; secondary dust lip blocks contaminants — the standard TC (double-lip) profile trusted in industrial and automotive applications.
Rigid metal insert maintains roundness during press-fit installation and prevents distortion under housing clamping force.
ID 8–38 mm across 250+ size combinations — covers a broad spectrum of shaft diameters for gearboxes, pumps, engines, and axles in a single listing.
NBR-type elastomer lip is compatible with mineral gear oils, engine oils, and general hydraulic fluids typically found in rotating machinery.
Outer diameter is sized for interference fit into standard metric housings. Use a seal driver or flat press plate for flush, square installation without lip distortion.
Suitable for automotive differentials, small engine crankshafts, hydraulic pump shafts, agricultural gearboxes, and power-tool spindles requiring a metric TC shaft seal.
| Seal Type | TC (Double Lip / FB Skeleton) |
|---|---|
| Inner Diameter (ID) | 8 mm – 38 mm (see variant options) |
| Outer Diameter (OD) | See variant options |
| Height (Width) | See variant options |
| Lip Material | NBR (Nitrile Rubber, standard TC construction) |
| Case Construction | Metal skeleton (carbon steel insert) |
| Lip Configuration | Dual lip — primary sealing + secondary dust exclusion |
| Fluid Compatibility | Mineral oils, gear oils, hydraulic fluids (petroleum-based) |
| Standard | Metric (DIN 3760 / ISO 6194 profile) |
| Finish | Black rubber outer / metal case |
| Quantity per Order | 1 piece per variant selected |
Measure your shaft outer diameter — this becomes the seal's Inner Diameter (ID). Measure your housing bore — this becomes the seal's Outer Diameter (OD). Measure the housing depth available for the seal — this is the Height. Match all three dimensions to the variant listed as ID × OD × Height. When in doubt, consult your equipment's service manual for the OEM seal specification.
TC stands for a double-lip seal with a metal case (skeleton). The primary lip seals lubricant inside; the secondary lip (dust lip) faces outward to exclude dirt and moisture. This dual-lip design is the most common type used in automotive and industrial rotating shaft applications.
These seals use an NBR-type elastomer, which is well-suited for petroleum-based mineral oils and standard gear oils. Compatibility with full-synthetic or ester-based fluids varies — if your application uses synthetic lubricants, verify NBR compatibility with your fluid supplier or consider a FKM (Viton) seal for guaranteed resistance.
Clean the housing bore and lightly lubricate the outer diameter of the seal and the sealing lip with the same oil used in the application. Use a seal driver or a flat plate slightly smaller than the OD to press the seal in squarely. Never hammer directly on the seal face. Press until the seal face is flush with or just below the housing surface. Avoid dragging the lip over sharp shaft edges — use a chamfer or installation sleeve if available.
Standard TC NBR oil seals are rated for moderate shaft surface speeds — typically up to 4–8 m/s depending on shaft finish and lubrication — and low-to-moderate pressure (generally up to 0.3 bar / 4.4 psi static). For high-speed or high-pressure applications, consult the specific seal datasheet or contact us to confirm suitability.
TC oil seals are designed primarily for dynamic (rotating shaft) applications. While they can function as static seals in some cases, an O-ring or gasket is typically more appropriate for purely static sealing. For rotating shaft sealing in gearboxes, engines, pumps, and axles, these TC seals are the correct choice.
Common signs of a failed shaft seal include oil weeping or dripping around the shaft exit point, visible hardening or cracking of the rubber lip, increased bearing noise due to lubricant loss, or contamination inside the housing. If you notice any of these, measure the old seal's ID, OD, and height and select the matching variant to replace it.
