What thread or interface standard do these seals use?

These are metric TC-type oil seals with a press-fit OD into a machined housing bore. They do not use threaded interfaces. The ID fits a 35mm (≈1.378″) shaft. OD options range from 46mm (≈1.811″) to 80mm (≈3.150″).

How do I know if NBR 70 is the right material for my fluid?

NBR 70 (nitrile rubber, 70 Shore A hardness) is compatible with most petroleum-based oils, hydraulic fluids, water, and many greases. It is generally not recommended for use with brake fluids, ketones, or strong acids. If you are sealing synthetic esters or phosphate-ester fluids, contact us to confirm compatibility.

TC Oil Seal 35mm ID Nitrile Double Lip Rotary Shaft Seal | NBR 70 | Multiple Sizes

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TC Oil Seal 35mm ID Nitrile Double Lip Rotary Shaft Seal | NBR 70 | Multiple Sizes

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Size(ID x OD x Height): 35*46*7mm

Amout(pcs): 1 Pcs

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$6.64 USD

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TC Double Lip Oil Seal with 35mm ID — Stop Leaks at the Shaft Exit

Mechanics, equipment builders, and maintenance technicians know the frustration of a weeping shaft seal: oil stains on the floor, contaminated bearings, and unplanned downtime. Whether you are rebuilding a gearbox, servicing a hydraulic pump, or replacing a worn seal on agricultural equipment, getting the exact metric size matters — and a wrong-size seal means doing the job twice.

Each seal in this listing features a 35mm inner diameter (≈1.378″) to fit a standard 35mm rotating shaft. The outer diameter ranges from 46mm (≈1.811″) to 80mm (≈3.150″) and the lip height from 7mm (≈0.276″) to 12mm (≈0.472″) — select the combination that matches your housing bore and groove depth. The TC (double lip) design uses a steel-reinforced skeleton body with an NBR 70 nitrile rubber compound, available in quantities of 1, 2, 5, 10, or 20 pieces per order.

These seals are well suited for gearbox output shaft sealing, hydraulic pump shaft seals, and electric motor bearing housing seals — applications where a reliable barrier between a lubricated interior and a contaminated exterior is critical. The double lip configuration is especially useful in dusty or wet environments such as agricultural machinery, construction equipment, and outdoor power units.

🔵 Compatibility Note: These seals fit a 35mm shaft diameter. Select the OD that matches your housing bore and the height that matches your seal groove depth. If you are unsure, measure your existing seal or check your equipment service manual before ordering.

✅ Key Features of These TC Double Lip Nitrile Shaft Seals

🔩Steel-Reinforced Skeleton Body — The rigid metal insert maintains the seal's round shape during press-fit installation and prevents distortion under housing clamp loads, a common failure point in all-rubber seals.
💧Double Lip (TC) Design — The primary lip retains lubricant inside the housing; the secondary dust lip faces outward to block dirt, water, and debris — making these seals a reliable choice for rotary shaft sealing in dirty or wet operating environments.
🧪NBR 70 Nitrile Compound — Compatible with petroleum-based oils, hydraulic fluids, water, and most greases. The 70 Shore A hardness balances flexibility and wear resistance for typical gearbox and pump shaft seal applications.
📐Wide Size Selection — OD options from 46mm to 80mm and heights from 7mm to 12mm cover a broad range of housing bores, reducing the need to source from multiple suppliers for a single rebuild job.
📦Flexible Pack Quantities — Order 1, 2, 5, 10, or 20 pieces to match your job size — whether it is a single repair or a workshop stock replenishment for metric oil seal replacement.
🏭Press-Fit Housing Interface — The OD is sized for a standard interference fit into a machined bore, consistent with DIN 3760 / ISO 6194 TC-type seal geometry used across European and Asian equipment platforms.

📐 Technical Specifications — TC Nitrile Rotary Shaft Oil Seal

Seal Type	TC (Double Lip, Steel-Reinforced Skeleton)
Inner Diameter (ID)	35mm (≈1.378″)
Outer Diameter (OD)	46mm to 80mm (≈1.811″ to ≈3.150″) — see variant options
Height (Lip Width)	7mm, 8mm, 10mm, or 12mm — see variant options
Lip Material	NBR (Nitrile Butadiene Rubber), 70 Shore A
Body / Skeleton	Steel-reinforced (FB skeleton construction)
Lip Configuration	Double lip — primary sealing lip + secondary dust exclusion lip
Spring	Garter spring on primary lip (typical for TC type)
Temperature Range	Typically −40°C to +120°C (−40°F to +248°F) for NBR compound
Compatible Fluids	Petroleum oils, hydraulic fluids, water, most greases
Standard Reference	DIN 3760 / ISO 6194 TC type
Pack Quantity	1, 2, 5, 10, or 20 pcs — see variant options
Shaft Speed	Contact us to confirm for your application

⚠️ Size Confirmation: Always verify the ID, OD, and height against your existing seal or housing drawing before ordering. Dimensions are in millimeters; inch equivalents are approximate.

❓ Frequently Asked Questions

How do I choose the right OD and height for my application?

Match the ID (35mm / ≈1.378″) to your shaft diameter, then match the OD to your housing bore. The height (lip width) should match the groove depth in your housing — typically 7mm, 8mm, 10mm, or 12mm for this series. When in doubt, measure the old seal with calipers or consult your equipment service manual before ordering.

What load or pressure can these oil seals handle?

TC-type rotary shaft seals are generally designed for low-to-medium pressure applications. They are typically rated for shaft surface speeds up to around 4–8 m/s and static pressures up to approximately 0.05 MPa. For high-pressure or high-speed applications, contact us to confirm suitability before ordering.

Are these seals suitable for outdoor or wet environments?

NBR nitrile seals generally perform well in environments exposed to water, oil mist, and moderate humidity. The double lip design adds an extra layer of dust and moisture exclusion on the atmosphere side. For prolonged UV exposure or salt-spray environments, VITON seals are typically recommended instead.

What interface standard do these seals use — are they metric?

Yes, these are metric TC-type oil seals with a press-fit OD into a machined housing bore, consistent with DIN 3760 / ISO 6194 geometry. They do not use threaded interfaces. The ID fits a 35mm (≈1.378″) shaft; OD options range from 46mm (≈1.811″) to 80mm (≈3.150″).

How do I know if NBR 70 is compatible with my fluid?

NBR 70 (nitrile rubber, 70 Shore A) is compatible with most petroleum-based oils, hydraulic fluids, water, and many greases. It is generally not recommended for brake fluids, ketones, or strong acids. If you are sealing synthetic esters or phosphate-ester fluids, contact us to confirm compatibility before ordering.

What is the difference between a single lip and a double lip (TC) seal?

A single lip seal retains lubricant on one side only. A double lip (TC) seal adds a secondary dust lip on the atmosphere side, which excludes contaminants like dirt, water, and debris from entering the bearing or housing. TC seals are generally preferred in dirty, dusty, or wet operating environments.

Can I use these seals in a gearbox, pump, or motor?

Yes. TC skeleton oil seals with a 35mm shaft bore are commonly used in gearboxes, hydraulic pumps, electric motors, agricultural equipment, and automotive differentials — wherever a rotating shaft exits a lubricated housing. Confirm the OD matches your housing bore and the height matches your groove depth before ordering.

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

TC Oil Seal 35mm ID Nitrile Double Lip Rotary Shaft Seal | NBR 70 | Multiple Sizes

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Description

TC Double Lip Oil Seal with 35mm ID — Stop Leaks at the Shaft Exit

✅ Key Features of These TC Double Lip Nitrile Shaft Seals

📐 Technical Specifications — TC Nitrile Rotary Shaft Oil Seal

❓ Frequently Asked Questions

TC Oil Seal 35mm ID Nitrile Double Lip Rotary Shaft Seal | NBR 70 | Multiple Sizes

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