What thread or shaft standards are compatible with these seals?

These are metric-dimensioned seals compatible with metric shafts and housings. The inner diameter matches the shaft OD and the outer diameter matches the housing bore. They follow common metric standards used in European and Asian machinery. If your equipment uses inch-dimensioned shafts, please verify the metric equivalent before ordering.

TC Oil Seal Rotary Shaft Seal — NBR Nitrile Rubber Double Lip, Metric Sizes (Pack of 10)

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TC Oil Seal Rotary Shaft Seal — NBR Nitrile Rubber Double Lip, Metric Sizes (Pack of 10)

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Inner Dia x Outer Dia: 8 x 14mm

Thickness: 5mm

Pack of Quantity (Pcs): 10

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$10.46 USD

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In stock (500 units), ready to be shipped

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TC Oil Seal Rotary Shaft Seal — Stop Leaks and Keep Contaminants Out

Mechanics, equipment rebuilders, and serious DIYers know the frustration of a weeping gearbox or a grease-packed bearing that keeps attracting grit. A worn or missing shaft seal lets lubricant escape and lets dirt in — two problems that accelerate wear and lead to costly repairs. These TC double-lip rotary shaft seals are built to close that gap and keep your rotating assemblies running clean.

Each pack contains 10 seals of your chosen size. The seals are made from NBR (nitrile butadiene rubber) with a steel reinforcing case. Available inner diameters range from 8mm (≈5/16") to 18mm (≈45/64"), outer diameters from 14mm to 47mm, and thicknesses of 5mm, 6mm, 7mm, 8mm, or 10mm — select the combination that matches your shaft and housing dimensions from the variant dropdowns above.

Typical applications include gearbox and transmission rebuilds, electric motor shaft sealing, agricultural and garden equipment, small engine repair, and automotive wheel-bearing assemblies — anywhere a metric rotary shaft seal is needed to retain oil or grease while blocking dust and moisture ingress.

ℹ️ Compatibility note: These are metric-dimensioned TC seals. Before ordering, measure your shaft OD (= seal inner diameter), housing bore ID (= seal outer diameter), and housing depth (= seal thickness). All three dimensions must match for a proper fit.

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

🔩TC Double-Lip Design — The primary lip retains lubricant while the secondary dust lip blocks contaminants, giving you two lines of defense in a single rotary shaft seal.
🧪NBR Nitrile Rubber Construction — Nitrile rubber resists petroleum-based oils, greases, water, and mild fuels across a typically serviceable temperature range of approximately −40°F to +230°F (−40°C to +110°C).
🏗️Steel-Reinforced Case — The rigid metal outer case holds the seal firmly in the housing bore, preventing rotation and maintaining concentricity with the shaft during operation.
📐Wide Metric Size Range — Inner diameters from 8mm to 18mm and outer diameters up to 47mm cover a broad range of metric gearbox, motor, and pump shaft seal applications in one product family.
📦Pack of 10 per Order — Stocking a full pack means you have spares on hand for future maintenance, fleet servicing, or workshop inventory — reducing downtime when the next seal fails.
⚙️Drop-In Replacement Fit — Dimensioned to standard metric shaft seal profiles, these seals fit directly into existing housings without machining or modification in most metric equipment applications.

📐 Technical Specifications — TC NBR Rotary Shaft Oil Seal

Seal Type	TC (Double Lip, Metal Case)
Material	NBR (Nitrile Butadiene Rubber) + Steel Case
Inner Diameter (ID) Range	8mm – 18mm (≈5/16" – 45/64")
Outer Diameter (OD) Range	14mm – 47mm (≈9/16" – 1-27/32")
Thickness Range	5mm, 6mm, 7mm, 8mm, 10mm (≈3/16" – 3/8")
Lip Configuration	Double lip (primary sealing lip + dust exclusion lip)
Operating Temperature	Typically −40°C to +110°C (−40°F to +230°F)
Fluid Compatibility	Petroleum-based oils, greases, water, mild fuels
Pressure Rating	Low-to-moderate dynamic pressure (typically ≤ 0.3 bar)
Dimension Standard	Metric
Quantity per Pack	10 pieces
Finish / Color	Black rubber body, bare steel case
Specific Size / Variant	See variant options above

⚠️ Sizing tip: If you are unsure of your exact dimensions, contact us to confirm before ordering. Returning incorrectly sized seals is avoidable with a quick measurement check.

❓ Frequently Asked Questions

How do I choose the right TC oil seal size?

Measure three things: the shaft outer diameter (this equals the seal's inner diameter), the housing bore inner diameter (this equals the seal's outer diameter), and the housing depth (this equals the seal thickness). For example, a 12mm (≈0.47") shaft in a 25mm (≈0.98") bore with a 7mm (≈0.28") housing depth calls for the 12 × 25mm / 7mm variant. When in doubt, measure twice before ordering.

What does "TC double lip" mean on a rotary shaft seal?

TC refers to the seal's construction: a metal-cased body with two sealing lips. The primary lip retains lubricant (oil or grease) and the secondary dust lip keeps contaminants out. This dual-barrier design is generally more effective than single-lip (SC) seals in environments with dirt, moisture, or light debris.

What load or pressure can these oil seals handle?

NBR TC oil seals are typically rated for low-to-moderate pressure applications — generally up to about 0.3 bar (≈4.4 psi) dynamic pressure. They are designed for rotary shaft applications, not high-pressure hydraulic lines. For higher-pressure needs, a different seal type is recommended.

Are these seals suitable for outdoor or wet environments?

NBR nitrile rubber offers good resistance to water, petroleum-based oils, and mild weather exposure, making these seals generally suitable for outdoor equipment that encounters moisture and light splashing. However, NBR is not recommended for prolonged UV exposure, ozone-rich environments, or contact with ketones and strong acids — in those cases, a Viton (FKM) seal would typically be a better choice.

What shaft or housing standards are compatible with these seals?

These are metric-dimensioned seals compatible with metric shafts and housings following common European and Asian machinery standards. The inner diameter matches the shaft OD and the outer diameter matches the housing bore. If your equipment uses inch-dimensioned shafts, please verify the metric equivalent before ordering — for example, a 1/2" shaft is approximately 12.7mm, so the nearest metric seal would typically be a 12mm or 13mm ID.

Which applications are these TC oil seals commonly used in?

These seals are commonly used in gearboxes, electric motors, pumps, agricultural and garden equipment, small engines, power tools, and automotive axle or wheel-bearing assemblies. Any rotating shaft that needs to retain grease or oil while excluding dust and moisture is a typical use case for a metric TC rotary shaft seal.

How do I install a TC rotary shaft seal correctly?

Clean the housing bore and shaft. Lightly lubricate the seal lip with the fluid it will retain. Press the seal squarely into the bore using a seal driver or a flat block — never hammer directly on the seal face. The metal case should sit flush with or slightly below the housing face. Avoid nicking the lip on sharp shaft edges; use a chamfer or installation sleeve if needed.

🛒 Select your inner/outer diameter and thickness above, then add to cart — ships from our US warehouse.

TC Oil Seal Rotary Shaft Seal — NBR Nitrile Rubber Double Lip, Metric Sizes (Pack of 10)

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Description

TC Oil Seal Rotary Shaft Seal — Stop Leaks and Keep Contaminants Out

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

📐 Technical Specifications — TC NBR Rotary Shaft Oil Seal

❓ Frequently Asked Questions

TC Oil Seal Rotary Shaft Seal — NBR Nitrile Rubber Double Lip, Metric Sizes (Pack of 10)

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