TC Skeleton Oil Seals FKM Double Lip Rotary Shaft Seal ID 50–52mm
TC Skeleton Oil Seals FKM Double Lip Rotary Shaft Seal ID 50–52mm
TC Skeleton Oil Seals FKM Double Lip Rotary Shaft Seal ID 50–52mm
TC Skeleton Oil Seals FKM Double Lip Rotary Shaft Seal ID 50–52mm
TC Skeleton Oil Seals FKM Double Lip Rotary Shaft Seal ID 50–52mm
TC Skeleton Oil Seals FKM Double Lip Rotary Shaft Seal ID 50–52mm
TC Skeleton Oil Seals FKM Double Lip Rotary Shaft Seal ID 50–52mm
TC Skeleton Oil Seals FKM Double Lip Rotary Shaft Seal ID 50–52mm
TC Skeleton Oil Seals FKM Double Lip Rotary Shaft Seal ID 50–52mm
TC Skeleton Oil Seals FKM Double Lip Rotary Shaft Seal ID 50–52mm
TC Skeleton Oil Seals FKM Double Lip Rotary Shaft Seal ID 50–52mm
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TC Skeleton Oil Seals FKM Double Lip Rotary Shaft Seal ID 50–52mmTC Skeleton Oil Seals FKM Double Lip Rotary Shaft Seal ID 50–52mmTC Skeleton Oil Seals FKM Double Lip Rotary Shaft Seal ID 50–52mmTC Skeleton Oil Seals FKM Double Lip Rotary Shaft Seal ID 50–52mmTC Skeleton Oil Seals FKM Double Lip Rotary Shaft Seal ID 50–52mmTC Skeleton Oil Seals FKM Double Lip Rotary Shaft Seal ID 50–52mmTC Skeleton Oil Seals FKM Double Lip Rotary Shaft Seal ID 50–52mmTC Skeleton Oil Seals FKM Double Lip Rotary Shaft Seal ID 50–52mmTC Skeleton Oil Seals FKM Double Lip Rotary Shaft Seal ID 50–52mmTC Skeleton Oil Seals FKM Double Lip Rotary Shaft Seal ID 50–52mmTC Skeleton Oil Seals FKM Double Lip Rotary Shaft Seal ID 50–52mm

TC Skeleton Oil Seals FKM Double Lip Rotary Shaft Seal ID 50–52mm

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$8.83 USD
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In stock (500 units), ready to be shipped

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Description

TC Oil Seal FKM Double Lip — Reliable Rotary Shaft Sealing for ID 50–52mm Applications

When a worn or leaking rotary shaft seal lets oil escape into a gearbox housing, differential, or pump casing, the resulting contamination can destroy bearings and seize moving parts within hours. Mechanics, equipment rebuilders, and serious DIYers who work on industrial machinery, agricultural equipment, marine drives, and automotive differentials need a seal that holds up to heat, aggressive fluids, and continuous shaft rotation — not a generic rubber ring that hardens and cracks after one season.

Each listing covers TC skeleton oil seals made from FKM (fluoroelastomer, also marketed as Viton). The TC double-lip design pairs a primary sealing lip — held in constant radial contact by an internal garter spring — with a secondary dust exclusion lip. The metal outer case (skeleton) provides a firm interference fit in the housing bore. Available sizes span an inner diameter of 50mm (≈1.97") or 52mm (≈2.05"), outer diameters from 68mm (≈2.68") to 100mm (≈3.94"), and thicknesses from 5mm (≈0.20") to 12mm (≈0.47"). Pack options of 1–5 pieces let you order exactly what the job requires.

Typical applications include replacing leaking rear axle seals on tractors and utility vehicles, resealing marine outboard lower-unit drive shafts exposed to saltwater, and restoring oil-tight integrity in industrial gearboxes and conveyor drive units where FKM's resistance to petroleum oils, synthetic lubricants, and elevated temperatures is essential for long service intervals.

🔵 Compatibility Note: These TC oil seals fit shafts with a nominal diameter of 50mm or 52mm. Confirm the housing bore (OD) and depth (thickness) before ordering — select the exact Inner Diameter × Outer Diameter × Thickness variant from the dropdown. Shaft surface finish should typically be Ra 0.2–0.8 µm for optimal lip sealing.

✅ Key Features of These TC FKM Rotary Shaft Oil Seals

  • 🌡️ FKM Fluoroelastomer Lip — Withstands continuous operating temperatures generally from -20°C to +200°C (-4°F to +392°F), outperforming standard NBR seals in high-heat gearbox and engine environments.
  • 🔩 TC Double-Lip Design with Garter Spring — The spring-loaded primary lip maintains consistent radial contact pressure as the lip wears, extending service life in continuous-rotation shaft seal applications.
  • 🛡️ Secondary Dust Exclusion Lip — The outer lip blocks dirt, grit, and moisture from reaching the primary sealing zone, making these seals effective in agricultural and outdoor power equipment exposed to contaminated environments.
  • ⚗️ Broad Fluid Compatibility — FKM resists petroleum-based oils, PAO and ester synthetic lubricants, hydraulic fluids, and diesel fuel — a practical choice for multi-fluid industrial gearbox and pump rebuilds.
  • 🏗️ Metal Skeleton Outer Case — The rigid steel outer ring provides a secure interference fit in the housing bore, preventing seal rotation and maintaining concentricity with the shaft during operation.
  • 📦 Flexible Pack Quantities (1–5 Pcs) — Order a single replacement seal for a one-off repair or stock up to 5 pieces per size for fleet maintenance and workshop inventory — priced per-piece with quantity savings built in.

📐 Technical Specifications — TC FKM Rotary Shaft Oil Seal

Seal Type TC (Double Lip with Garter Spring)
Lip Material FKM (Fluoroelastomer / Viton)
Outer Case Material Carbon steel (skeleton construction)
Inner Diameter (ID) 50mm (≈1.97") or 52mm (≈2.05") — see variant options
Outer Diameter (OD) 68mm–100mm (≈2.68"–3.94") — see variant options
Thickness 5mm–12mm (≈0.20"–0.47") — see variant options
Operating Temperature Generally -20°C to +200°C (-4°F to +392°F)
Pressure Rating Typically suitable for low-pressure dynamic sealing (generally ≤0.3 MPa / ~44 psi)
Shaft Speed Contact us to confirm for your specific application
Finish / Color Black lip; bare metal outer case
Pack Quantity 1, 2, 3, 4, or 5 pieces per order
Compliance / Standard See variant options / Contact us to confirm

❓ Frequently Asked Questions

How do I choose the right size TC oil seal?

Measure the shaft diameter (inner diameter), the bore diameter (outer diameter), and the housing depth (thickness) with calipers. Match those three dimensions to the variant listing. For example, a 50×70×8mm seal has a 50mm (≈1.97") ID, 70mm (≈2.76") OD, and 8mm (≈0.31") thickness. Always measure the worn seal or the housing directly — do not rely on part numbers alone.

What does "TC" mean on an oil seal?

TC designates a double-lip seal with an internal garter spring. The primary lip retains lubricant; the secondary dust lip keeps contaminants out. The garter spring maintains consistent radial pressure on the shaft as the lip wears over time.

What temperature and pressure range can these FKM seals handle?

FKM (Viton) generally handles continuous temperatures from -20°C to +200°C (-4°F to +392°F) and is typically rated for low-pressure dynamic sealing applications (generally under 0.3 MPa / ~44 psi). For high-pressure hydraulic circuits, a different seal type is recommended.

Are these oil seals suitable for outdoor or marine use?

Yes. FKM offers excellent resistance to weathering, ozone, UV exposure, and saltwater environments, making these seals well-suited for marine outboard shafts, outdoor power equipment, and agricultural machinery that sees moisture and chemical exposure.

What fluids are compatible with FKM oil seals?

FKM is generally compatible with petroleum-based oils, synthetic lubricants (PAO, ester), hydraulic fluids, diesel fuel, and many aggressive chemicals. It is not recommended for use with ketones, certain amines, or low-molecular-weight esters. When in doubt, consult a fluid compatibility chart for FKM/Viton.

How do I install a TC rotary shaft seal without damaging the lip?

Lightly lubricate the seal lip and shaft with clean grease or the system oil before installation. Use a seal driver or a flat press plate sized to the OD to press the seal in squarely — never hammer directly on the seal face. Ensure the housing bore is clean and free of burrs. The seal should sit flush or slightly below the housing face.

Can I buy just one seal, or do I have to buy a pack?

You can purchase as few as 1 piece per order. Pack options of 1, 2, 3, 4, or 5 pieces are available for each size — simply select your preferred quantity from the Pack Quantity option before adding to cart.

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

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