Metric NBR Oil Shaft Seal Dust Grease Seal TC Double Lip w Spring ID 200-400mm

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Metric NBR Oil Shaft Seal Dust Grease Seal TC Double Lip w Spring ID 200-400mm

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Size (ID x OD x Width): 200x230x15mm

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Metric NBR TC Double-Lip Oil Shaft Seals — Reliable Fluid & Dust Exclusion for Rotating Shafts (ID 200–400mm)

When a worn or incorrectly sized shaft seal lets lubricant escape or contaminants enter, the downstream damage to bearings and gearboxes can be costly. Maintenance engineers, equipment rebuilders, and industrial DIYers working on large-bore rotating assemblies need metric NBR TC double-lip oil shaft seals that match exact bore dimensions without guesswork.

These TC-type radial shaft seals feature a nitrile rubber (NBR) body bonded to a steel reinforcing case, with a primary sealing lip loaded by an internal garter spring and a secondary dust-exclusion lip. Available in 43 size variants spanning inner diameters from 200mm (≈7.87 in) to 400mm (≈15.75 in), outer diameters from 230mm to 440mm, and widths of 15mm, 16mm, 18mm, or 20mm — select the exact ID × OD × Width combination your application requires.

Typical use cases include agricultural gearbox output shafts, industrial conveyor drive housings, heavy-duty pump shaft assemblies, and construction equipment final-drive sealing — anywhere a large-bore rotating shaft passes through a stationary housing and must be sealed against oil, grease, and airborne particulates.

⚙️ Compatibility: Fits standard metric bore housings. Verify your shaft ID, housing OD, and seal width before ordering. Suitable for mineral oils, greases, and mild hydraulic fluids. Not recommended for aggressive solvents or continuous temperatures above 120 °C (248 °F).

✅ Key Features of These Metric NBR TC Oil Shaft Seals

🔩 TC Double-Lip Design: Primary sealing lip retains lubricant; secondary lip excludes dust and debris — two barriers in a single seal body.
🌀 Garter Spring-Loaded Primary Lip: The internal garter spring maintains consistent radial lip pressure against the shaft, compensating for minor shaft runout and lip wear over time.
🛡️ NBR Rubber Construction: Nitrile butadiene rubber delivers resistance to petroleum-based oils, greases, and mild hydraulic fluids across a working temperature range of approximately −40 °C to +120 °C (−40 °F to +248 °F).
🔧 Steel-Reinforced Case: A stamped steel outer case provides dimensional stability during press-fit installation and prevents the seal from rotating in the housing bore.
📐 43 Metric Size Options: ID range 200–400mm, OD range 230–440mm, widths 15/16/18/20mm — select the exact ID × OD × Width combination to match your housing and shaft without modification.
🏭 Wide Application Range: Suited for agricultural machinery, industrial gearboxes, heavy-duty pumps, conveyor drives, and construction equipment final drives requiring large-bore shaft sealing.

📐 Technical Specifications — TC Radial Shaft Oil Seals

Seal Type	TC (Double Lip with Garter Spring)
Material	NBR (Nitrile Butadiene Rubber) with steel reinforcing case
Inner Diameter (ID) Range	200mm – 400mm (≈7.87 in – 15.75 in)
Outer Diameter (OD) Range	230mm – 440mm (≈9.06 in – 17.32 in)
Width Range	15mm / 16mm / 18mm / 20mm
Number of Lips	2 (primary sealing lip + secondary dust lip)
Spring Type	Internal garter spring (primary lip)
Operating Temperature	Approximately −40 °C to +120 °C (−40 °F to +248 °F)
Compatible Fluids	Mineral oils, petroleum greases, mild hydraulic fluids
Installation Method	Press-fit into housing bore
Shaft Surface Finish	Typically Ra 0.2–0.8 µm recommended for optimal sealing
Available Sizes	See variant options
Quantity per Order	1 piece per variant

❓ Frequently Asked Questions

How do I identify the correct seal size for my application?

Measure three dimensions directly from your existing seal or housing: the inner diameter (ID) that contacts the shaft, the outer diameter (OD) that presses into the housing bore, and the width (axial depth). All three must match your selected variant exactly. If the old seal is damaged, measure the shaft OD for the ID dimension and the housing bore ID for the seal OD dimension.

What does "TC" mean, and why does it matter?

"TC" designates a double-lip radial shaft seal with a garter spring on the primary lip. The first lip seals lubricant inside; the second lip (dust lip) blocks contaminants from entering. The garter spring keeps the primary lip in firm contact with the shaft even as the lip wears, extending service life compared to single-lip (SC) seals in contaminated environments.

Is NBR the right material for my fluid and temperature conditions?

NBR performs well with mineral oils, petroleum-based greases, and mild hydraulic fluids in the range of approximately −40 °C to +120 °C (−40 °F to +248 °F). It is not suitable for aggressive solvents, phosphate-ester hydraulic fluids, or continuous exposure above 120 °C. For those conditions, consider FKM (Viton) seals instead.

How do I install a large-bore press-fit shaft seal without damaging it?

Clean the housing bore and lightly lubricate the seal OD with the same oil used in the assembly. Use a flat installation tool or a seal driver sized to the OD — never strike the seal face directly. Press evenly and squarely until the seal face is flush with or just below the housing face. Lightly coat the sealing lip with clean grease before fitting over the shaft to prevent dry-start damage.

Will these seals fit both metric and imperial shaft housings?

These seals are dimensioned in metric (mm). Imperial-dimensioned housings may have bore and shaft sizes that do not correspond to standard metric seal dimensions. Always verify the actual measured bore and shaft diameters in millimeters before selecting a variant. A seal that is even 0.5mm undersized on the OD will not retain properly in the housing.

What shaft surface finish is needed for reliable sealing?

For optimal lip seal performance, the shaft surface in the sealing contact zone should have a ground or polished finish with a roughness of approximately Ra 0.2–0.8 µm (8–32 µin). Surfaces that are too smooth can prevent the hydrodynamic oil film from forming; surfaces that are too rough accelerate lip wear. Avoid longitudinal machining marks, which can act as leak paths.

Can I reuse a TC oil seal after removing it?

Reusing a removed shaft seal is not recommended. The press-fit OD may have been deformed during removal, and the sealing lip will have a wear track from the original shaft position. Installing a used seal on a new or re-ground shaft places the lip on an unworn surface area, which often results in immediate leakage. Always fit a new seal when reassembling.

🛒 Select your Size (ID x OD x Width) above, then add to cart.

Metric NBR Oil Shaft Seal Dust Grease Seal TC Double Lip w Spring ID 200-400mm

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Description

Metric NBR TC Double-Lip Oil Shaft Seals — Reliable Fluid & Dust Exclusion for Rotating Shafts (ID 200–400mm)

✅ Key Features of These Metric NBR TC Oil Shaft Seals

📐 Technical Specifications — TC Radial Shaft Oil Seals

❓ Frequently Asked Questions

Metric NBR Oil Shaft Seal Dust Grease Seal TC Double Lip w Spring ID 200-400mm

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