NBR Rotary Shaft Oil Seal TC Double Lip | 50–65mm Shaft | Multiple Sizes

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NBR Rotary Shaft Oil Seal TC Double Lip | 50–65mm Shaft | Multiple Sizes

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Size(ID x OD x Height): 50 x 62 x 7mm

Pack Quantity(pcs): 1

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$2.03 USD

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NBR Rotary Shaft Oil Seal TC Double Lip — Stop Leaks on 50–65mm Shafts

A leaking shaft seal turns a minor maintenance job into a messy, costly repair. Whether you're rebuilding a gearbox, replacing a worn pump seal, or servicing agricultural equipment, finding the exact metric size you need — without ordering a full assortment kit — saves time and money. These NBR rotary shaft oil seals are stocked in a wide range of sizes specifically for mechanics, equipment owners, and DIYers who need the right seal, right now.

Each seal is a TC-type (double-lip) design with a fully bonded steel case, made from nitrile rubber (NBR). Shaft inner diameters (ID) range from 50mm (≈1.97") to 65mm (≈2.56"), outer diameters (OD) from 62mm (≈2.44") to 100mm (≈3.94"), and heights from 7mm (≈0.28") to 12mm (≈0.47"). Available in pack quantities of 1, 2, 3, 5, 10, or 20 pieces — select the exact size and quantity you need from the variant dropdowns above.

Typical applications include gearbox output shaft sealing, hydraulic pump shaft seals, agricultural tractor PTO shaft seals, and industrial motor shaft sealing where a metric TC oil seal for 50mm–65mm shafts is required. The double-lip design is especially useful in dusty or wet environments where a secondary exclusion lip helps extend service life.

ℹ️ Compatibility Note: These are metric-dimensioned radial shaft seals conforming to ISO 6194 / DIN 3760 standards. Verify your shaft ID, housing bore OD, and housing depth before ordering. Dimensions are listed as ID × OD × Height (mm) in the size selector.

⚠️ Confirm your measurements: Use calipers to measure shaft diameter, bore diameter, and housing depth. A seal that is even 1mm off in OD will not seal correctly. If you are unsure, contact us before ordering.

✅ Key Features of These NBR TC Rotary Shaft Oil Seals

🔒Double-Lip TC Design — Primary sealing lip retains oil while the secondary dust lip blocks dirt, debris, and moisture from entering the bearing cavity, extending seal and bearing life in contaminated environments.
🧲Fully Bonded Steel Case — The metal outer shell is chemically bonded to the NBR rubber, allowing a firm press-fit into the housing bore without distortion and maintaining concentricity during operation.
🌡️NBR Rubber Compound — Nitrile rubber resists petroleum-based oils, gear lubricants, and greases across a typical operating range of -40°F to +250°F (-40°C to +120°C), suitable for most gearbox and pump shaft seal applications.
📐Wide Size Range in One Listing — Covers 50mm to 65mm shaft diameters with over 50 distinct ID × OD × Height combinations, so you can find the exact metric TC oil seal size without buying a mixed assortment.
📦Flexible Pack Quantities — Order 1 piece for a single repair or up to 20 pieces for fleet maintenance or workshop stock. Bulk packs offer a lower per-unit cost for recurring service needs.
🔧Drop-In Replacement Fit — Dimensioned to ISO 6194 / DIN 3760 metric standards, making these seals direct replacements for OEM seals on tractors, pumps, compressors, and industrial gearboxes with matching bore and shaft dimensions.

📐 Technical Specifications — NBR TC Rotary Shaft Oil Seal

Seal Type	TC (Double Lip) / FB — Radial Shaft Seal
Material	NBR (Nitrile Butadiene Rubber) with bonded steel case
Shaft ID Range	50mm–65mm (≈1.97"–2.56")
Outer Diameter (OD) Range	62mm–100mm (≈2.44"–3.94")
Height Range	7mm–12mm (≈0.28"–0.47")
Operating Temperature	Typically -40°F to +250°F (-40°C to +120°C)
Max Static Pressure	Generally up to ~0.05 MPa (7 psi) — not for high-pressure hydraulics
Dimensional Standard	ISO 6194 / DIN 3760 (metric)
Lip Configuration	Primary oil-retention lip + secondary dust exclusion lip
Installation Method	Press-fit into housing bore
Pack Quantity Options	1, 2, 3, 5, 10, or 20 pieces (select above)
Exact Size	See variant options (ID × OD × Height)

❓ Frequently Asked Questions

How do I choose the right oil seal size?

Measure the shaft diameter (ID), the bore diameter (OD), and the housing depth (Height) with calipers. Match all three dimensions to the variant listed. For example, a 50 × 70 × 10mm seal has a 50mm (≈1.97") shaft bore, 70mm (≈2.76") outer diameter, and 10mm (≈0.39") height. When in doubt, go by the shaft diameter first, then confirm OD fits your housing bore.

What load or pressure can these oil seals handle?

TC-type NBR oil seals are generally rated for low-to-moderate shaft speeds and static pressures up to approximately 0.05 MPa (7 psi). They are not designed for high-pressure hydraulic applications. For dynamic sealing under higher pressure, a different seal type is typically required.

Are these seals suitable for outdoor or wet environments?

NBR (nitrile rubber) generally offers good resistance to petroleum-based oils, greases, and water splash. However, NBR is not recommended for prolonged UV exposure or immersion in ozone-rich environments. For fully outdoor or marine applications, a Viton (FKM) seal is typically a better choice.

What shaft standard do these seals fit?

These are metric-dimensioned radial shaft seals. They fit any smooth, round shaft matching the listed ID (inner diameter). No thread is involved — the seal presses into a machined bore and rides on the rotating shaft. They are compatible with metric shafts following ISO 6194 / DIN 3760 dimensional standards.

What is the operating temperature range for NBR oil seals?

NBR rubber typically operates reliably from approximately -40°F to +250°F (-40°C to +120°C). Continuous exposure above this range can cause the rubber to harden and crack, leading to seal failure. If your application runs hotter, consider a Viton (FKM) seal instead.

What is the difference between TC and FB seal types?

TC seals have a double lip — a primary sealing lip that retains oil and a secondary dust lip that keeps contaminants out. FB seals generally refer to a fully bonded metal case design. Both types listed here use an NBR rubber compound bonded to a steel case for structural rigidity during press-fit installation.

How do I install a rotary shaft oil seal correctly?

Clean the housing bore and lightly lubricate the seal lip with the fluid it will retain. Press the seal in squarely using a seal driver or a flat block — never hammer directly on the rubber. The seal face should sit flush with or slightly 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.

NBR Rotary Shaft Oil Seal TC Double Lip | 50–65mm Shaft | Multiple Sizes

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Description

NBR Rotary Shaft Oil Seal TC Double Lip — Stop Leaks on 50–65mm Shafts

✅ Key Features of These NBR TC Rotary Shaft Oil Seals

📐 Technical Specifications — NBR TC Rotary Shaft Oil Seal

❓ Frequently Asked Questions

NBR Rotary Shaft Oil Seal TC Double Lip | 50–65mm Shaft | Multiple Sizes

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