TC Double-Lipped Rotary Shaft Oil Seal — NBR 70 Nitrile, ID 40mm, Multiple OD & Width Options
TC Double-Lipped Rotary Shaft Oil Seal — NBR 70 Nitrile, ID 40mm, Multiple OD & Width Options
TC Double-Lipped Rotary Shaft Oil Seal — NBR 70 Nitrile, ID 40mm, Multiple OD & Width Options
TC Double-Lipped Rotary Shaft Oil Seal — NBR 70 Nitrile, ID 40mm, Multiple OD & Width Options
TC Double-Lipped Rotary Shaft Oil Seal — NBR 70 Nitrile, ID 40mm, Multiple OD & Width Options
TC Double-Lipped Rotary Shaft Oil Seal — NBR 70 Nitrile, ID 40mm, Multiple OD & Width Options
TC Double-Lipped Rotary Shaft Oil Seal — NBR 70 Nitrile, ID 40mm, Multiple OD & Width Options
TC Double-Lipped Rotary Shaft Oil Seal — NBR 70 Nitrile, ID 40mm, Multiple OD & Width Options
TC Double-Lipped Rotary Shaft Oil Seal — NBR 70 Nitrile, ID 40mm, Multiple OD & Width Options
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TC Double-Lipped Rotary Shaft Oil Seal — NBR 70 Nitrile, ID 40mm, Multiple OD & Width OptionsTC Double-Lipped Rotary Shaft Oil Seal — NBR 70 Nitrile, ID 40mm, Multiple OD & Width OptionsTC Double-Lipped Rotary Shaft Oil Seal — NBR 70 Nitrile, ID 40mm, Multiple OD & Width OptionsTC Double-Lipped Rotary Shaft Oil Seal — NBR 70 Nitrile, ID 40mm, Multiple OD & Width OptionsTC Double-Lipped Rotary Shaft Oil Seal — NBR 70 Nitrile, ID 40mm, Multiple OD & Width OptionsTC Double-Lipped Rotary Shaft Oil Seal — NBR 70 Nitrile, ID 40mm, Multiple OD & Width OptionsTC Double-Lipped Rotary Shaft Oil Seal — NBR 70 Nitrile, ID 40mm, Multiple OD & Width OptionsTC Double-Lipped Rotary Shaft Oil Seal — NBR 70 Nitrile, ID 40mm, Multiple OD & Width OptionsTC Double-Lipped Rotary Shaft Oil Seal — NBR 70 Nitrile, ID 40mm, Multiple OD & Width Options

TC Double-Lipped Rotary Shaft Oil Seal — NBR 70 Nitrile, ID 40mm, Multiple OD & Width Options

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Beschreibung

TC Double-Lipped Rotary Shaft Oil Seal — Stop Leaks and Lock Out Contaminants

If you're dealing with oil weeping past a worn shaft seal — or fighting grit and moisture destroying your bearings — you need a seal that does two jobs at once. Mechanics, equipment rebuilders, and DIY machine restorers working on gearboxes, axles, pumps, and agricultural machinery rely on TC-type double-lipped seals precisely because the secondary lip actively excludes dirt and moisture while the primary lip retains lubricant.

Each seal in this listing features a fixed 40mm inner diameter (ID), with outer diameters (OD) ranging from 50mm (≈1.97") to 85mm (≈3.35") and widths from 5mm (≈0.20") to 12mm (≈0.47") — select the exact ID×OD×Width combination that matches your housing bore and groove depth. The skeleton (metal-cased) construction maintains dimensional stability under press-fit installation. The sealing element is NBR 70 Shore A nitrile rubber, bonded to the steel case. Available in quantities of 1, 2, 5, or 10 pieces per order.

Typical applications include gearbox output shaft seals, agricultural tractor PTO and axle seals, hydraulic pump shaft seals, electric motor end-cap seals, and industrial conveyor drive shaft seals — anywhere a 40mm shaft passes through a housing that must stay lubricated and contamination-free.

🔵 Compatibility Note: These seals follow TC / ISO 6194 / DIN 3760 metric dimensions. Verify your shaft OD = 40mm and measure your housing bore and groove width before ordering. See the size selector above for all available OD and width combinations.
⚠️ Confirm your dimensions: ID, OD, and width must all match your application. If you are unsure, contact us with your equipment make/model and we will help you identify the correct size.

✅ Key Features of These TC Double-Lip Rotary Shaft Oil Seals

  • 🔒Double-Lip (TC) Design — The primary lip retains oil and grease; the secondary dust lip faces outward to block dirt, grit, and moisture from reaching the bearing — critical for outdoor and agricultural shaft seal applications.
  • 🔩Skeleton Metal Case — The rigid steel outer shell maintains a consistent press-fit OD, resists distortion during installation, and ensures the seal stays seated under vibration and thermal cycling.
  • 🧪NBR 70 Shore A Nitrile Rubber — Formulated for compatibility with petroleum-based oils, gear lubricants, and greases; typically rated from -40°F to +212°F (-40°C to +100°C) for continuous service.
  • 📐36 Size Combinations Available — OD from 50mm to 85mm, width from 5mm to 12mm, all with a fixed 40mm ID — covering a wide range of gearbox, pump, and axle housing bore sizes in a single listing.
  • 📦Flexible Quantity Options — Order 1, 2, 5, or 10 pieces; ideal whether you need a single replacement seal for a one-off repair or a shop stock of rotary shaft seals for recurring maintenance jobs.
  • 🏭ISO 6194 / DIN 3760 Metric Standard — Dimensionally interchangeable with TC-type seals from major manufacturers; straightforward cross-reference by ID×OD×Width for gearbox and hydraulic pump shaft seal replacements.

📐 Technical Specifications — TC Double-Lip Rotary Shaft Oil Seal

Seal Type TC (Double-Lipped Skeleton Oil Seal)
Standard ISO 6194 / DIN 3760
Inner Diameter (ID) 40mm (≈1.575")
Outer Diameter (OD) 50mm – 85mm (≈1.97" – 3.35") — see variant options
Width (Height) 5mm – 12mm (≈0.20" – 0.47") — see variant options
Sealing Material NBR (Nitrile Butadiene Rubber), 70 Shore A
Case / Skeleton Carbon steel (metal-cased)
Lip Configuration Double lip — primary sealing lip + secondary dust exclusion lip
Operating Temperature Typically -40°F to +212°F (-40°C to +100°C) continuous
Media Compatibility Petroleum-based oils, gear lubricants, greases, water splash
Not Recommended For Brake fluid, phosphate ester hydraulic fluid, strong acids/solvents
Shaft Speed Generally up to 4–8 m/s surface speed (application-dependent)
Quantity per Order 1 Pc / 2 Pcs / 5 Pcs / 10 Pcs — select above
Spring Contact us to confirm

❓ Frequently Asked Questions

How do I choose the right OD and width for my application?

Match the ID (40mm) to your shaft diameter exactly. The OD must fit snugly into your housing bore — measure the bore with calipers. Width (height) should match the groove or housing depth. For example, a 40×62×10mm seal means 40mm shaft, 62mm bore, 10mm wide. When in doubt, consult your equipment's service manual or contact us to confirm.

What load or pressure can these oil seals handle?

TC-type rotary shaft seals are generally designed for low-to-medium pressure applications. They are typically rated for shaft speeds up to around 4–8 m/s surface speed and pressures up to approximately 0.05 MPa (0.5 bar) in most standard configurations. For high-pressure or high-speed applications, please contact us to confirm suitability.

Are these seals suitable for outdoor or wet environments?

Yes. NBR (nitrile rubber) offers good resistance to petroleum-based oils, greases, and water splash. The double-lip design adds a secondary dust/moisture exclusion lip, making these seals suitable for outdoor machinery, agricultural equipment, and wet environments. However, NBR is not recommended for use with brake fluids, phosphate ester hydraulic fluids, or strong acids.

What shaft and housing standards are compatible with these seals?

These are metric-dimensioned seals (ID 40mm) compatible with metric shafts. The TC designation follows ISO 6194 / DIN 3760 standards, so they are generally interchangeable with seals from major manufacturers using the same ID×OD×Width dimensions. Always verify the exact dimensions match your application before installation.

What is the difference between a single-lip and a double-lip (TC) seal?

A single-lip seal retains lubricant on one side. A double-lip (TC) seal adds a secondary lip that faces outward to exclude contaminants — dust, dirt, and moisture — from entering the bearing or housing. TC seals are generally preferred in dirty or outdoor environments where contamination is a concern.

How do I install a TC skeleton oil seal correctly?

Clean the housing bore and shaft. Lightly lubricate the seal lips with the fluid being sealed (e.g., gear oil or grease). Press the seal squarely into the bore using a seal driver or a flat plate — never hammer directly on the seal face. The metal case (skeleton) should be flush with or slightly below the housing face. Ensure the primary lip faces the fluid side.

What temperature range can NBR 70 seals withstand?

NBR 70 Shore A nitrile rubber typically performs in a temperature range of approximately -40°F to +212°F (-40°C to +100°C) for continuous operation. Short-term peaks up to around +250°F (+120°C) are generally tolerable. For higher temperature applications, consider FKM (Viton) seals instead.

🛒 Select your size (ID × OD × Width) and quantity above, then add to cart — ships from our US warehouse.

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