NBR TC Double Lip Oil Seal — Skeleton Shaft Seal Ø 190–400mm (1, 2 or 4 pcs)
NBR TC Double Lip Oil Seal — Skeleton Shaft Seal Ø 190–400mm (1, 2 or 4 pcs)
NBR TC Double Lip Oil Seal — Skeleton Shaft Seal Ø 190–400mm (1, 2 or 4 pcs)
NBR TC Double Lip Oil Seal — Skeleton Shaft Seal Ø 190–400mm (1, 2 or 4 pcs)
NBR TC Double Lip Oil Seal — Skeleton Shaft Seal Ø 190–400mm (1, 2 or 4 pcs)
NBR TC Double Lip Oil Seal — Skeleton Shaft Seal Ø 190–400mm (1, 2 or 4 pcs)
NBR TC Double Lip Oil Seal — Skeleton Shaft Seal Ø 190–400mm (1, 2 or 4 pcs)
NBR TC Double Lip Oil Seal — Skeleton Shaft Seal Ø 190–400mm (1, 2 or 4 pcs)
NBR TC Double Lip Oil Seal — Skeleton Shaft Seal Ø 190–400mm (1, 2 or 4 pcs)
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NBR TC Double Lip Oil Seal — Skeleton Shaft Seal Ø 190–400mm (1, 2 or 4 pcs)NBR TC Double Lip Oil Seal — Skeleton Shaft Seal Ø 190–400mm (1, 2 or 4 pcs)NBR TC Double Lip Oil Seal — Skeleton Shaft Seal Ø 190–400mm (1, 2 or 4 pcs)NBR TC Double Lip Oil Seal — Skeleton Shaft Seal Ø 190–400mm (1, 2 or 4 pcs)NBR TC Double Lip Oil Seal — Skeleton Shaft Seal Ø 190–400mm (1, 2 or 4 pcs)NBR TC Double Lip Oil Seal — Skeleton Shaft Seal Ø 190–400mm (1, 2 or 4 pcs)NBR TC Double Lip Oil Seal — Skeleton Shaft Seal Ø 190–400mm (1, 2 or 4 pcs)NBR TC Double Lip Oil Seal — Skeleton Shaft Seal Ø 190–400mm (1, 2 or 4 pcs)NBR TC Double Lip Oil Seal — Skeleton Shaft Seal Ø 190–400mm (1, 2 or 4 pcs)

NBR TC Double Lip Oil Seal — Skeleton Shaft Seal Ø 190–400mm (1, 2 or 4 pcs)

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Beschreibung

NBR TC Double Lip Oil Seal — Stop Leaks on Large-Diameter Rotating Shafts

When a gearbox, pump, or axle starts weeping oil around a large-diameter shaft, the culprit is almost always a worn or incorrectly sized shaft seal. Finding a metric TC double lip oil seal in the 190–400mm range can be frustrating — most local suppliers stock only the common small sizes. These NBR skeleton oil seals are stocked specifically for large-bore applications, so machinists, equipment technicians, and serious DIYers can get the right seal without a long lead time.

Each seal is a TC/FB-type double-lip radial shaft seal with a metal skeleton (rigid outer case) and an NBR (nitrile rubber) sealing element. Sizes span from 190mm (≈7.5") inner diameter up to 400mm (≈15.7") inner diameter, with outer diameters and heights listed as ID × OD × Height in millimeters for each variant. Available in 1, 2, or 4-piece quantities to suit single repairs or workshop stock.

Typical applications include industrial gearbox output shafts, agricultural equipment final drives, heavy-duty pump housings, and marine propulsion shaft seals — anywhere a large rotating shaft passes through a stationary housing and needs a reliable oil-retention barrier.

🔵Compatibility: Fits metric housings per ISO / DIN shaft seal standards. Match your shaft ID, bore OD, and housing depth exactly to the variant dimensions (ID × OD × Height in mm). Verify all three measurements before ordering.

✅ Key Features of These NBR TC Double Lip Oil Seals

  • 🔩Metal Skeleton Construction — A rigid steel outer case holds the seal shape under press-fit installation and prevents distortion in the housing bore, which is critical for large-diameter seals where even slight ovality causes leaks.
  • 💧TC Double-Lip Design — The primary lip retains lubricant; the secondary dust lip blocks contaminants. This two-barrier arrangement is the industry-standard approach for rotating shaft seals in gearboxes, pumps, and axle housings.
  • 🧪NBR Rubber Compound — Nitrile rubber resists petroleum-based oils, greases, water, and many fuels across a broad temperature range (typically -40°F to +250°F / -40°C to +120°C), making it the go-to material for most industrial and agricultural shaft seal applications.
  • 📐Wide Size Range — 190mm to 400mm ID — Covers large-bore shafts that are difficult to source locally. Each variant is listed with exact metric dimensions (ID × OD × Height) so you can match your housing without guesswork.
  • 🔄Drop-In Metric Replacement — Dimensioned to ISO / DIN metric shaft seal conventions, these seals are generally interchangeable with TC/FB seals from major manufacturers of the same size, simplifying maintenance on imported machinery.
  • 📦Flexible Quantity Options — Order 1, 2, or 4 pieces per transaction. Buying in multiples lowers the per-unit cost and keeps spares on the shelf for the next scheduled service interval — a practical choice for fleet shops and equipment dealers.

📐 Technical Specifications — TC Double Lip Skeleton Oil Seal

Seal Type TC / FB Double Lip Radial Shaft Seal
Material NBR (Nitrile Butadiene Rubber) lip; metal skeleton outer case
Inner Diameter (ID) Range 190mm (≈7.5") – 400mm (≈15.7")
Outer Diameter (OD) Range 220mm (≈8.7") – 440mm (≈17.3")
Height Range 15mm (≈0.59") – 20mm (≈0.79")
Lip Configuration Primary sealing lip + secondary dust exclusion lip
Operating Temperature Typically -40°F to +250°F (-40°C to +120°C)
Shaft Surface Speed Typically up to 4–6 m/s (contact us to confirm for your application)
Pressure Rating Low-to-moderate (typically ≤ 0.05 MPa / 7 psi); not for high-pressure hydraulic lines
Dimensional Standard Metric (ISO / DIN); dimensions in mm as listed per variant
Quantity per Order 1 pcs / 2 pcs / 4 pcs (select above)
Fluid Compatibility Petroleum oils, greases, water, many fuels; not recommended for ozone or strong UV exposure
Installation Method Press-fit into housing bore; use seal driver or flat plate
Exact Dimensions See variant options (ID × OD × Height in mm)
⚠️Sizing note: Always verify your shaft inner diameter, housing bore outer diameter, and housing depth with a caliper before ordering. A seal that is even 1mm off in any dimension will not seal correctly.

❓ Frequently Asked Questions

How do I choose the right size oil seal for my shaft?

Measure three dimensions with a caliper: the shaft outer diameter (this becomes the seal ID), the housing bore inner diameter (this becomes the seal OD), and the housing depth (this becomes the seal height). Match all three to the variant listed as ID × OD × Height. For example, a 200mm shaft in a 240mm bore with a 15mm housing depth needs the 200 × 240 × 15mm variant. Converting to inches: 200mm ≈ 7.87", 240mm ≈ 9.45", 15mm ≈ 0.59".

What does TC (or FB) double-lip mean?

TC and FB are common industry designations for a double-lip radial shaft seal. The primary lip faces inward and retains lubricant (oil or grease) inside the housing. The secondary dust lip faces outward and generally keeps dirt, water, and debris from entering. This two-barrier design is the standard for rotating shafts in gearboxes, pumps, and axle housings.

What load or pressure can these seals handle?

NBR skeleton oil seals of this type are generally rated for low-to-moderate pressure applications — typically up to around 0.05 MPa (≈7 psi) in static conditions. They are designed for dynamic sealing on rotating shafts, not for high-pressure hydraulic lines. If your application involves elevated pressure, contact us to confirm suitability.

Can these seals be used outdoors or in wet environments?

In most cases, yes. NBR (nitrile rubber) offers good resistance to water, petroleum oils, and many fuels, making it suitable for outdoor and wet environments. However, NBR is generally not recommended for prolonged exposure to ozone, strong UV radiation, or certain synthetic fluids (e.g., phosphate-ester hydraulic fluids). For harsh chemical environments, a Viton (FKM) seal is typically a better choice.

What shaft speed and temperature range are these seals rated for?

NBR skeleton oil seals are generally suitable for operating temperatures from approximately -40°F to +250°F (-40°C to +120°C). Shaft surface speeds are typically up to around 4–6 m/s, depending on shaft surface finish (Ra ≤ 0.8 µm recommended) and adequate lubrication at the lip. Contact us to confirm for your specific operating conditions.

Are these metric seals compatible with standard housings?

Yes. All dimensions follow metric standards in millimeters, consistent with ISO and DIN shaft seal conventions. They are generally interchangeable with other TC/FB metric oil seals of the same ID × OD × Height from major manufacturers. Always confirm the three dimensions match your housing exactly before installation.

How do I install a skeleton oil seal correctly?

Follow these steps for a leak-free installation:

  • Clean the housing bore and shaft journal thoroughly.
  • Lightly lubricate the seal lip with the fluid being sealed (oil or grease).
  • Press the seal squarely into the bore using a seal driver or flat plate — never hammer directly on the seal face or lip.
  • Ensure the seal sits flush or slightly below the housing face.
  • Protect the lip from sharp edges (keyways, threads, splines) during installation — use a sleeve or tape if needed.
Why should I order multiple pieces at once?

Oil seals are wear items with a finite service life. Having spares on hand means you can complete a repair or scheduled service without waiting for a second shipment. The 2-pcs and 4-pcs options offer a lower per-unit cost and are practical for fleet maintenance shops, equipment dealers, or any application where the seal is replaced on a regular service interval.

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

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