TC Oil Seal Rings Metric – NBR 70 Rotary Shaft Lip Seal, ID 8–24mm

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TC Oil Seal Rings Metric – NBR 70 Rotary Shaft Lip Seal, ID 8–24mm

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Size(ID x OD x Height): 8*18*5mm

Amout(pcs): 1 Pcs

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$3.54 USD

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In stock (500 units), ready to be shipped

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TC Oil Seal Rings Metric — Stop Leaks at the Source with the Right Rotary Shaft Lip Seal

A weeping gearbox, a dripping pump shaft, or a greasy axle seal are more than a nuisance — they signal a failing rotary shaft seal that, left unaddressed, leads to bearing damage and costly downtime. Mechanics, equipment owners, and DIY repair enthusiasts who work on motors, gearboxes, agricultural machinery, and small engines need a reliable source for exact-fit metric oil seals without waiting weeks for a dealer order.

Each seal in this listing is a TC-type double-lip skeleton oil seal made from NBR 70 (nitrile rubber, 70 Shore A) with a steel inner skeleton for dimensional stability. Sizes are expressed as ID × OD × Height in millimeters, ranging from 8×18×5mm (≈0.31"×0.71"×0.20") up to 24×47×10mm (≈0.94"×1.85"×0.39") — covering the most common metric shaft diameters used in European and Asian machinery. Available in 1 Pcs or 5 Pcs packs.

Typical use cases include replacing worn seals on metric gearbox output shafts, resealing hydraulic pump housings, servicing small engine crankshaft seals, and maintaining agricultural equipment axles — applications where an exact ID/OD/height match is critical for a leak-free press fit.

ℹ️ Compatibility Note: These are metric-dimensioned seals (mm). Verify your shaft ID, housing bore OD, and housing depth before ordering. The variant label format is ID × OD × Height (e.g., 20×35×7mm). If your shaft is inch-sized, convert to mm first.

✅ Key Features of These TC Metric Rotary Shaft Oil Seals

🔩TC Double-Lip Design — The primary sealing lip retains oil while the secondary dust lip blocks contaminants, making these seals well-suited for metric gearbox shaft seals and outdoor equipment exposed to dirt and moisture.
🛡️NBR 70 Rubber Compound — Nitrile rubber at 70 Shore A hardness resists petroleum oils, greases, and hydraulic fluids across a typically rated range of –40 °F to +250 °F (–40 °C to +120 °C), covering most rotary shaft seal applications.
🔧Steel Skeleton Reinforcement — An internal metal case maintains the seal's circular shape during press-fit installation and prevents distortion under housing clamp loads, a key advantage over all-rubber designs.
📐97 Metric Size Options — ID range from 8mm to 24mm with matching OD and height combinations, covering the most frequently replaced sizes in European and Asian machinery without special ordering.
⚙️Spring-Loaded Sealing Lip — A garter spring maintains consistent radial lip pressure against the shaft as the rubber wears over time, helping sustain a leak-free seal throughout the service interval.
📦Single or 5-Pack Quantity Options — Order 1 Pcs to verify fit or complete a single repair, or choose the 5 Pcs pack for maintenance kits, fleet service, or keeping a spare on hand — both ship from our US warehouse.

⚠️ Before You Order: Measure your shaft OD (= seal ID), housing bore ID (= seal OD), and housing depth (= seal Height). A seal that is even 0.5mm off in any dimension will not seat correctly. If you are unsure, contact us to confirm.

📐 Technical Specifications — TC Metric Rotary Shaft Oil Seal

Seal Type	TC (Double Lip with Garter Spring)
Material	NBR (Nitrile Butadiene Rubber), 70 Shore A
Inner Skeleton	Steel (carbon steel, stamped)
Inner Diameter (ID) Range	8mm – 24mm (≈0.31" – 0.94")
Outer Diameter (OD) Range	17mm – 52mm (≈0.67" – 2.05")
Height Range	5mm – 10mm (≈0.20" – 0.39")
Size Format	ID × OD × Height (mm) — see variant options
Temperature Range	Typically –40 °C to +120 °C (–40 °F to +250 °F)
Compatible Fluids	Petroleum oils, greases, hydraulic fluids (mineral-based)
Shaft Speed	Typically up to 4–6 m/s surface speed
Pressure Rating	Generally ≤ 0.05 MPa (low-pressure dynamic sealing)
Quantity per Order	1 Pcs or 5 Pcs — see variant options
Standard	Metric (DIN 3760 / ISO 6194 profile)
Color / Finish	Black rubber body, bare steel skeleton
Country of Origin	Contact us to confirm

❓ Frequently Asked Questions

How do I choose the right TC oil seal size?

Measure the shaft inner diameter (ID), the housing bore outer diameter (OD), and the housing depth (Height). Match all three dimensions to the variant listed as ID × OD × Height. For example, a 20×35×7mm seal fits a 20mm (≈0.79") shaft inside a 35mm (≈1.38") bore with a 7mm (≈0.28") housing depth. When in doubt, measure twice — a seal that is even 0.5mm off will not seat correctly.

What does NBR 70 mean, and is it the right material for my application?

NBR (nitrile butadiene rubber) at 70 Shore A hardness is generally the industry-standard choice for petroleum-based oils, greases, and hydraulic fluids in the –40 °F to +250 °F (–40 °C to +120 °C) range. It is typically suitable for gearboxes, pumps, motors, and axles. If your application involves fuel, ketones, or temperatures above 250 °F, a Viton (FKM) seal would typically be a better fit.

Can these TC oil seals be used outdoors or in wet environments?

Yes, in most cases. The TC double-lip design includes a secondary dust/water exclusion lip that helps keep moisture and contaminants out. NBR 70 is generally resistant to water and mild weather exposure. For prolonged submersion or salt-spray environments, confirm compatibility with your specific fluid and temperature conditions before installation.

What shaft speed and pressure can these seals handle?

TC-type rotary shaft seals are typically rated for shaft surface speeds up to approximately 4–6 m/s (800–1,200 ft/min) and low-to-moderate pressure differentials (generally under 0.05 MPa / 7 psi). For high-speed spindles or pressurized housings, contact us to confirm suitability before ordering.

Are these seals compatible with metric shafts and housings only?

Yes, all dimensions listed (ID × OD × Height) are metric millimeter measurements. If you are working with an inch-dimensioned shaft, convert first — for example, a 3/4" shaft is 19.05mm, so the 19mm ID variants would typically be the closest match. Always verify the OD and height against your housing before ordering.

What is the difference between the 1 Pcs and 5 Pcs options?

Both options ship the same seal in the same size. The 5 Pcs pack offers a lower per-unit cost and is useful when you need spares for maintenance kits, fleet repairs, or multiple machines. The 1 Pcs option is ideal for a single repair or to verify fit before buying in bulk.

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

Clean the housing bore and lightly lubricate the outer diameter of the seal and the sealing lip with the same oil the seal will retain. Press the seal in squarely using a seal driver or a flat block — never hammer directly on the seal face. The seal should sit flush or just below the housing surface. Avoid nicking the lip on sharp shaft edges; use a chamfer or installation sleeve if needed.

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

TC Oil Seal Rings Metric – NBR 70 Rotary Shaft Lip Seal, ID 8–24mm

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TC Oil Seal Rings Metric — Stop Leaks at the Source with the Right Rotary Shaft Lip Seal

✅ Key Features of These TC Metric Rotary Shaft Oil Seals

📐 Technical Specifications — TC Metric Rotary Shaft Oil Seal

❓ Frequently Asked Questions

TC Oil Seal Rings Metric – NBR 70 Rotary Shaft Lip Seal, ID 8–24mm

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