TC Skeleton Oil Seals — ID 13/14/15mm, NBR 70 Dual Lip Rotary Shaft Seal

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TC Skeleton Oil Seals — ID 13/14/15mm, NBR 70 Dual Lip Rotary Shaft Seal

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Sizes (ID x OD x Thickness): 13*19*3mm

Packing QTY (Piece): 2 PCS

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$4.49 USD

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In stock (500 units), ready to be shipped

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TC Skeleton Oil Seals ID 13–15mm — Stop Leaks on Rotary Shafts with a Dual-Lip NBR Seal

When a worn or missing shaft seal lets oil weep past a gearbox, pump, or axle, the mess is just the beginning — contamination and bearing damage follow fast. Mechanics, equipment rebuilders, and serious DIYers who work on small engines, agricultural machinery, power tools, and hydraulic units need a reliable TC skeleton oil seal that installs cleanly and holds up to daily cycling.

Each set includes 2 or 10 pieces of TC-type skeleton oil seals in your chosen size. The inner diameter (ID) covers 13mm (≈0.512"), 14mm (≈0.551"), and 15mm (≈0.591"); outer diameters (OD) range from 19mm to 42mm; and thickness options span 3mm to 10mm — available in multiple sizes to match your exact housing. The lip material is NBR 70 (Nitrile Butadiene Rubber, 70 Shore A), and the metal skeleton provides dimensional stability under press-fit installation.

Typical applications include gearbox output shaft sealing on small tractors and tillers, pump shaft seals on hydraulic power units, crankshaft and camshaft seals on small gasoline engines, and rotary shaft seals on electric motors and conveyor drives — anywhere a low-to-moderate pressure rotary shaft seal is needed.

🔵 Compatibility check: Match all three dimensions — ID (shaft diameter), OD (bore diameter), and thickness (housing depth) — before ordering. Sizes are listed as ID×OD×Thickness in mm. See the FAQ below for measurement guidance.

✅ Key Features of These TC Skeleton Oil Seals

🔩TC Dual-Lip Design — The primary sealing lip retains oil while the secondary dust lip blocks contaminants, making this a dual-function rotary shaft seal suitable for dirty or splash-prone environments.
🧪NBR 70 Lip Material — Nitrile rubber at 70 Shore A hardness resists petroleum oils, gear oils, and hydraulic fluids, with generally rated continuous service up to ~100°C (212°F).
🏗️Metal Skeleton Construction — The rigid steel skeleton maintains the seal's round shape during press-fit installation into the housing bore, reducing the risk of distortion or cocking.
📐Wide Size Range — ID 13/14/15mm with OD from 19mm to 42mm and thickness from 3mm to 10mm covers a broad range of small-shaft gearbox and pump seal applications in one listing.
📦Flexible Pack Quantities — Choose 2 PCS for a single repair job or 10 PCS for workshop stock — useful for fleet maintenance or recurring seal replacement schedules.
⚙️Standard Metric Dimensions — All sizes follow metric TC oil seal standards, making cross-referencing with OEM part numbers and seal catalogs straightforward for common small-engine and machinery applications.

📐 Technical Specifications — TC Skeleton Oil Seals

Seal Type	TC (Double Lip with Dust Lip)
Construction	Metal skeleton with bonded rubber lip
Lip Material	NBR (Nitrile Butadiene Rubber), 70 Shore A
Inner Diameter (ID)	13mm (≈0.512"), 14mm (≈0.551"), 15mm (≈0.591") — see variant options
Outer Diameter (OD)	19mm – 42mm — see variant options
Thickness	3mm – 10mm — see variant options
Operating Temperature	Typically −40°C to +100°C (−40°F to +212°F) continuous; up to ~120°C intermittent
Max Shaft Speed	Typically up to 4–6 m/s (contact us to confirm for your application)
Max Pressure	Typically up to 0.05 MPa (7 psi) — low-pressure rotary applications
Fluid Compatibility	Petroleum oils, gear oils, hydraulic fluids, greases (not for brake fluid or ketones)
Recommended Shaft Finish	Ra 0.2–0.8 µm (8–32 µin)
Pack Quantity	2 PCS or 10 PCS — see variant options
Color / Finish	See variant options
Country of Origin	Contact us to confirm

⚠️ Sizing note: If your existing seal is worn or swollen, measure the housing bore (OD) and housing depth (thickness) directly rather than the old seal — worn seals can be undersized. Always verify all three dimensions before ordering.

❓ Frequently Asked Questions

How do I choose the right TC oil seal size?

Measure the shaft diameter (ID), the bore diameter (OD), and the housing depth (thickness) with calipers. Match those three dimensions to the variant listed as ID×OD×Thickness. For example, a 14×28×7mm seal fits a 14mm (≈9/16") shaft in a 28mm bore with a 7mm housing depth. When in doubt, go by the shaft diameter first — it is the most critical fit dimension.

What does NBR 70 mean, and what fluids is it compatible with?

NBR (Nitrile Butadiene Rubber) at 70 Shore A hardness is generally compatible with petroleum-based oils, hydraulic fluids, gear oils, and greases. It is typically rated for continuous service up to about 100°C (212°F) and intermittent peaks up to 120°C (248°F). It is not recommended for use with brake fluid, phosphate-ester hydraulic fluids, or ketones.

Can these seals be used outdoors or in wet environments?

The NBR lip material resists water and mild moisture exposure. The TC dual-lip design adds a secondary dust/water exclusion lip, making it more suitable for outdoor or splash-prone environments than single-lip seals. For fully submerged or high-pressure water applications, confirm suitability with your equipment specifications.

What shaft speed and pressure can these seals handle?

TC skeleton oil seals are generally designed for rotary shaft applications at low to moderate pressures (typically up to 0.05 MPa / 7 psi). Shaft surface speed compatibility depends on the specific installation, but most NBR TC seals perform well at speeds typically up to 4–6 m/s on a properly finished shaft. For high-speed or high-pressure applications, consult your equipment manual.

What shaft surface finish is recommended for best seal life?

For optimal sealing and seal longevity, the shaft surface in the sealing zone should generally have a finish of Ra 0.2–0.8 µm (8–32 µin). Avoid spiral machining marks, which can pump fluid past the lip. A hardness of HRC 45 or higher in the contact zone is typically recommended to minimize shaft wear.

How do I install a TC skeleton oil seal without damaging it?

Apply a thin film of clean oil or grease to the seal lip and the shaft before installation. Use a seal driver or a flat press plate to push the seal in squarely — never hammer directly on the seal face. Press until the outer face is flush with or just below the housing bore face. Protect the lip from sharp keyways or splines during installation with a sleeve or tape.

Are these seals compatible with metric or imperial shafts?

All dimensions are metric (mm). The ID values — 13mm (≈0.512"), 14mm (≈0.551"), and 15mm (≈0.591") — are standard metric shaft sizes. They will fit metric shafts of those diameters. For imperial shafts, verify the actual shaft diameter in mm before ordering, as common fractional inch sizes may not correspond exactly.

🛒 Select your size and quantity above, then add to cart — ships from our US warehouse.

TC Skeleton Oil Seals — ID 13/14/15mm, NBR 70 Dual Lip Rotary Shaft Seal

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TC Skeleton Oil Seals ID 13–15mm — Stop Leaks on Rotary Shafts with a Dual-Lip NBR Seal

✅ Key Features of These TC Skeleton Oil Seals

📐 Technical Specifications — TC Skeleton Oil Seals

❓ Frequently Asked Questions

TC Skeleton Oil Seals — ID 13/14/15mm, NBR 70 Dual Lip Rotary Shaft Seal

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