TC FB Skeleton Oil Seal — NBR Double Lip Rotary Shaft Seal, ID 32–65mm

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TC FB Skeleton Oil Seal — NBR Double Lip Rotary Shaft Seal, ID 32–65mm

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Size (mm) ID x OD x High: 32 x 52 x 7

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$6.64 USD

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TC FB NBR Double Lip Oil Seal — Stop Leaks on Rotary Shafts from 32mm to 65mm

Leaking seals on pumps, gearboxes, motors, and axles are one of the most common causes of unplanned downtime in workshops and on equipment. Whether you're a mechanic replacing a worn shaft seal, a maintenance technician rebuilding a hydraulic unit, or a DIYer fixing an oil leak on a small engine, finding the exact metric size you need — without ordering a full assortment kit — saves time and money. These TC FB skeleton oil seals are stocked in over 185 individual size combinations so you can order precisely what fits.

Each seal is a TC (double lip) FB skeleton type, constructed with an NBR (nitrile rubber) elastomer bonded to a steel skeleton frame. The inner diameter (ID) ranges from 32mm (≈1.26") to 65mm (≈2.56"), outer diameters (OD) from 46mm (≈1.81") to 100mm (≈3.94"), and heights from 5mm (≈0.20") to 12mm (≈0.47"). Sold individually — one seal per order unless quantity is adjusted at checkout.

Typical applications include automotive rear axle seals, small engine crankshaft seals, agricultural equipment gearbox seals, electric motor shaft seals, and pump housing seals. The double lip design makes these TC FB rotary shaft seals well suited for environments where both lubricant retention and dust exclusion are needed simultaneously.

🔵 Compatibility: These are metric TC FB profile seals. Verify your shaft ID, housing bore OD, and housing depth (height) before ordering. Dimensions are listed in mm as ID × OD × Height. Select your exact size from the variant dropdown above.

⚠️ Size confirmation: If you are replacing a worn seal, measure the housing bore and shaft directly with calipers — do not rely on the old seal's dimensions, as worn seals may be distorted. Contact us if you need help identifying your size.

✅ Key Features of These TC FB NBR Double Lip Oil Seals

🔒Double Lip (TC) Design — The primary lip retains lubricant while the secondary dust lip blocks contaminants, making these rotary shaft seals effective in both oily and dusty operating conditions.
🧲Steel Skeleton Frame — The FB skeleton construction provides dimensional stability and resistance to distortion during press-fit installation into metal housings.
🧪NBR Elastomer — Nitrile rubber offers broad compatibility with petroleum-based oils, greases, and water, covering the majority of common industrial and automotive lubrication fluids.
📐185+ Size Variants — ID from 32mm to 65mm with multiple OD and height combinations per bore size, reducing the need to buy assortment kits when only one specific size is needed.
🌡️Wide Operating Temperature — NBR rubber typically performs across approximately -40°F to +250°F (-40°C to +120°C), covering most standard workshop and light industrial shaft seal applications.
🔧Press-Fit Installation — Standard interference-fit OD allows installation with a seal driver or socket without adhesive in most metal housings, consistent with ISO and DIN metric housing standards.

📐 Technical Specifications — TC FB Skeleton NBR Oil Seals

Seal Type	TC FB (Double Lip, Skeleton Frame)
Elastomer Material	NBR (Nitrile Butadiene Rubber)
Frame / Skeleton	Steel (FB — fully bonded skeleton)
Lip Configuration	Double lip — primary sealing lip + secondary dust exclusion lip
Inner Diameter (ID) Range	32mm–65mm (≈1.26"–2.56")
Outer Diameter (OD) Range	46mm–100mm (≈1.81"–3.94")
Height Range	5mm–12mm (≈0.20"–0.47")
Operating Temperature	Typically -40°C to +120°C (-40°F to +250°F)
Pressure Rating	Typically suitable for low-to-medium pressure (generally ≤0.05 MPa static)
Fluid Compatibility	Petroleum oils, greases, water, mild hydraulic fluids (NBR-compatible media)
Dimension Standard	Metric (ISO / DIN compatible profile)
Quantity per Order	1 piece (single seal)
Installation Method	Press-fit into housing bore
Shaft Speed	See variant options — contact us to confirm for high-speed applications

❓ Frequently Asked Questions

How do I choose the right oil seal size?

Measure the shaft diameter (ID), the bore diameter (OD), and the housing depth (height) with calipers. The variant format is ID × OD × Height in mm. For example, 40 × 60 × 10 means a 40mm (≈1.57") shaft, 60mm (≈2.36") bore, and 10mm (≈0.39") height. Always measure directly — do not rely on a worn seal's dimensions, as they may be distorted.

What load or pressure can these oil seals handle?

TC FB skeleton oil seals are generally designed for low-to-medium pressure applications. They are typically rated for static pressures up to around 0.05 MPa (≈7 psi). They are not intended for high-pressure hydraulic circuits. For higher-pressure environments, a different seal type is generally required.

Can these seals be used outdoors or in wet environments?

NBR rubber offers good resistance to water, petroleum oils, and mild chemicals, making it suitable for many outdoor and wet applications. However, NBR is generally not recommended for prolonged exposure to ozone, UV radiation, or aromatic fuels. For harsh outdoor environments, a dust lip cover or a different elastomer such as FKM (Viton) may be more appropriate.

What shaft and bore standards are these seals compatible with?

These TC FB seals use metric dimensions and are generally compatible with ISO and DIN standard housings. The TC double lip profile is a widely recognized international standard. Always verify that the ID, OD, and height match your specific housing before installation.

What is the difference between TC and SC oil seals?

TC seals have two sealing lips — a primary lip that retains lubricant and a secondary dust lip that excludes contaminants from entering the housing. SC seals have only a single lip. TC seals are generally preferred in dusty or contaminated environments because the second lip provides an additional protective barrier.

What temperature range can NBR oil seals withstand?

NBR rubber typically performs well across approximately -40°F to +250°F (-40°C to +120°C). Sustained exposure beyond this range may cause the seal to harden, crack, or lose elasticity over time. For higher-temperature applications, FKM (Viton) seals are generally recommended.

Do I need to lubricate the seal before installation?

Yes. It is generally recommended to lightly coat the sealing lip with clean grease or the fluid being sealed before installation. This reduces friction during initial startup and helps prevent lip damage. Avoid using petroleum-based greases with seals not rated for them, and never use dry installation on a rubber lip seal.

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

TC FB Skeleton Oil Seal — NBR Double Lip Rotary Shaft Seal, ID 32–65mm

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Description

TC FB NBR Double Lip Oil Seal — Stop Leaks on Rotary Shafts from 32mm to 65mm

✅ Key Features of These TC FB NBR Double Lip Oil Seals

📐 Technical Specifications — TC FB Skeleton NBR Oil Seals

❓ Frequently Asked Questions

TC FB Skeleton Oil Seal — NBR Double Lip Rotary Shaft Seal, ID 32–65mm

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