What is the load or pressure rating of these seals?

TC-type NBR oil seals are generally rated for low-to-medium pressure applications — typically up to 0.3 bar (≈4.4 psi) of dynamic pressure. They are designed for rotary shaft sealing, not high-pressure hydraulic systems. Contact us to confirm suitability for your specific application.

How do I decide between a pack of 2 and a pack of 5?

If you are replacing a single seal or doing a one-time repair, a pack of 2 provides a spare. If you are servicing multiple machines, performing a fleet overhaul, or want to keep stock on hand, the pack of 5 typically offers a lower per-unit cost.

TC Oil Seal NBR Double Lip Skeleton Seal Ring for Rotation Shaft | 140–260mm

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TC Oil Seal NBR Double Lip Skeleton Seal Ring for Rotation Shaft | 140–260mm

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Inner Dia x Outer Dia: 140 x 160mm

Thickness: 12mm

Pack of Quantity (Pcs): 5

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$22.83 USD

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In stock (500 units), ready to be shipped

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TC Oil Seal NBR Double Lip Skeleton Seal Ring — Stop Leaks on Rotation Shafts

When a worn or incorrectly sized oil seal lets lubricant escape from a rotating shaft, the result is contaminated bearings, accelerated wear, and unplanned downtime. Mechanics, equipment operators, and DIY rebuilders working on gearboxes, axles, pumps, and agricultural machinery need a seal that fits precisely and holds up under continuous rotation — not a generic part that fails within a season.

Each seal in this listing is a TC-type (double-lip) skeleton oil seal made from NBR (nitrile butadiene rubber) with a rigid metal case. The inner diameter spans 140mm (≈5.51") to 260mm (≈10.24"), outer diameters range from 160mm (≈6.30") to 320mm (≈12.60"), and thickness options run from 10mm (≈0.39") to 20mm (≈0.79"). Sold in packs of 2 or 5 pieces — select your exact Inner Dia × Outer Dia, Thickness, and pack quantity from the variant options above.

Typical applications include rear axle shaft seals on tractors and construction equipment, gearbox output shaft sealing, industrial pump shaft sealing, and conveyor drive shaft assemblies — anywhere a large-diameter TC oil seal for rotation shaft is required to retain grease or oil while excluding dirt and moisture.

🔵 Compatibility: Fits metric-dimensioned shafts and housings. Verify your shaft OD (= seal inner diameter), housing bore ID (= seal outer diameter), and housing depth (= seal thickness) before ordering. See the FAQ below for measurement guidance.

✅ Key Features of These TC Skeleton Oil Seal Rings

🔩Double-Lip TC Design — The primary lip retains lubricant; the secondary dust lip blocks contaminants, making this NBR double lip seal effective in dirty or wet operating environments.
🛡️NBR Rubber Construction — Nitrile butadiene rubber resists petroleum oils, greases, and water splash across a working range of typically -40°F to +250°F (-40°C to +120°C).
🏗️Rigid Metal Skeleton Case — The pressed-steel outer shell maintains dimensional stability during press-fit installation and prevents distortion under housing clamping forces.
📐Wide Size Range — Inner diameters from 140mm to 260mm with matching outer diameters and multiple thickness options cover a broad range of large-diameter rotation shaft seal applications in one listing.
📦Flexible Pack Quantities — Choose a pack of 2 for single-machine repairs or a pack of 5 for fleet servicing and workshop stock, reducing per-unit cost on larger jobs.
⚙️Metric-Standard Dimensions — All sizes follow metric conventions used in industrial, agricultural, and automotive equipment globally, simplifying cross-reference with OEM part numbers.

📐 Technical Specifications — TC Skeleton Oil Seal Ring

Seal Type	TC (TG) — Double Lip Skeleton Oil Seal
Material	NBR (Nitrile Butadiene Rubber) lip; steel skeleton case
Inner Diameter (Shaft OD)	140mm (≈5.51") – 260mm (≈10.24") — see variant options
Outer Diameter (Housing Bore)	160mm (≈6.30") – 320mm (≈12.60") — see variant options
Thickness	10mm (≈0.39") – 20mm (≈0.79") — see variant options
Lip Configuration	Double lip (primary sealing lip + secondary dust exclusion lip)
Operating Temperature	Typically -40°F to +250°F (-40°C to +120°C)
Max Dynamic Pressure	Typically up to 0.3 bar (≈4.4 psi) — rotary shaft use only
Shaft Speed	See variant options / Contact us to confirm for high-speed applications
Fluid Compatibility	Petroleum-based oils and greases; water splash resistant
Installation Method	Press-fit into housing bore
Pack Quantity	2 pcs or 5 pcs — select above
Dimension Standard	Metric (mm)

⚠️ Before ordering: Measure your shaft OD, housing bore ID, and housing depth with calipers. These three values correspond directly to the Inner Dia, Outer Dia, and Thickness variant options. If your measurements fall between listed sizes, contact us to confirm the closest fit.

❓ Frequently Asked Questions

How do I choose the right TC oil seal size?

Measure three dimensions with calipers: (1) the shaft outer diameter — this equals the seal's inner diameter; (2) the housing bore inner diameter — this equals the seal's outer diameter; (3) the housing depth — this equals the seal thickness. For example, a 140mm (≈5.51") shaft in a 160mm (≈6.30") bore with 12mm (≈0.47") depth selects the 140×160mm / 12mm variant. When in doubt, contact us to confirm before ordering.

What does "TC" mean on an oil seal?

TC (also written TG or TC-type) designates a double-lip skeleton oil seal. It has a primary sealing lip that retains lubricant and a secondary dust lip that excludes dirt and moisture. The metal skeleton (pressed-steel case) provides rigidity for press-fit installation and maintains the seal's shape under housing clamping forces.

What load or pressure can these seals handle?

TC-type NBR oil seals are generally rated for low-to-medium pressure rotary shaft applications — typically up to 0.3 bar (≈4.4 psi) of dynamic pressure. They are not designed for high-pressure hydraulic circuits. Contact us to confirm suitability for your specific operating conditions.

Can these seals be used outdoors or in wet environments?

NBR rubber offers good resistance to petroleum-based oils, greases, and water splash, making it generally suitable for outdoor equipment exposed to moisture. However, NBR is not recommended for prolonged UV exposure or contact with ozone, ketones, or esters. For highly corrosive outdoor environments, FKM (Viton) seals are typically a better choice.

Are these seals compatible with metric shafts and housings?

Yes. All dimensions follow metric standards (mm) as used in most industrial, agricultural, and automotive equipment worldwide. Cross-reference the inner diameter, outer diameter, and thickness values against your OEM part number or equipment manual to confirm fitment.

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

Use a seal driver or flat press tool sized to the outer diameter to apply even pressure across the metal case — never strike the rubber lip directly. Lightly lubricate the sealing lip with clean grease or the fluid being sealed before installation. Ensure the shaft surface is smooth (typically Ra ≤ 0.8 µm) and free of burrs or sharp edges.

What temperature range can NBR oil seals handle?

NBR rubber typically performs reliably from approximately -40°F to +250°F (-40°C to +120°C). Continuous operation near the upper limit may accelerate lip wear. For applications above 250°F, an FKM (Viton) or silicone seal material is generally recommended.

Should I order a pack of 2 or a pack of 5?

A pack of 2 is a good choice for a single-machine repair where you want one spare on hand. A pack of 5 is more economical per unit and suits fleet servicing, workshop stock, or jobs where multiple seals of the same size are needed at once.

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

TC Oil Seal NBR Double Lip Skeleton Seal Ring for Rotation Shaft | 140–260mm

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TC Oil Seal NBR Double Lip Skeleton Seal Ring — Stop Leaks on Rotation Shafts

✅ Key Features of These TC Skeleton Oil Seal Rings

📐 Technical Specifications — TC Skeleton Oil Seal Ring

❓ Frequently Asked Questions

TC Oil Seal NBR Double Lip Skeleton Seal Ring for Rotation Shaft | 140–260mm

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