TC Oil Seal 40-45mm Inner Diameter – NBR Nitrile Rubber, Metal Frame & Spring
TC Oil Seal 40-45mm Inner Diameter – NBR Nitrile Rubber, Metal Frame & Spring
TC Oil Seal 40-45mm Inner Diameter – NBR Nitrile Rubber, Metal Frame & Spring
TC Oil Seal 40-45mm Inner Diameter – NBR Nitrile Rubber, Metal Frame & Spring
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TC Oil Seal 40-45mm Inner Diameter – NBR Nitrile Rubber, Metal Frame & SpringTC Oil Seal 40-45mm Inner Diameter – NBR Nitrile Rubber, Metal Frame & SpringTC Oil Seal 40-45mm Inner Diameter – NBR Nitrile Rubber, Metal Frame & SpringTC Oil Seal 40-45mm Inner Diameter – NBR Nitrile Rubber, Metal Frame & Spring

TC Oil Seal 40-45mm Inner Diameter – NBR Nitrile Rubber, Metal Frame & Spring

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Price:
$6.30 USD
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In stock (500 units), ready to be shipped

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Description

TC Oil Seal 40–45mm Inner Diameter — Reliable Rotary Shaft Sealing for Engines, Gearboxes & More

Leaking seals on a gearbox, pump, or engine crankshaft are more than an inconvenience — they lead to lubricant loss, contamination ingress, and accelerated wear. Whether you're a mechanic rebuilding a transmission, a DIYer servicing agricultural equipment, or a technician maintaining industrial machinery, finding the exact replacement TC oil seal in the right size shouldn't require a trip to a specialty supplier.

Each seal in this listing is a TC-type double-lip rotary shaft oil seal with an inner diameter of 40mm or 42mm or 45mm, available in a wide range of outer diameters (50mm–85mm) and heights (5mm–12mm). The construction combines an NBR nitrile rubber sealing body, a rigid metal outer frame for press-fit stability, and an internal garter spring that maintains consistent lip contact pressure against the shaft. Sizes are expressed as Inner φ × Outer φ × Height — for example, 40*60*10mm means 40mm (≈1.57″) inner × 60mm (≈2.36″) outer × 10mm (≈0.39″) height. Multiple quantity packs (1, 2, 5, or 10 pieces) are available to suit single repairs or workshop stock.

These TC oil seals are widely used as crankshaft front and rear seals, gearbox input shaft seals, hydraulic pump shaft seals, and agricultural equipment axle seals — anywhere a rotating shaft passes through a stationary housing and a reliable fluid barrier is required.

ℹ️ Compatibility Note: These are metric-dimensioned seals. Before ordering, measure your shaft OD (inner φ), bore ID (outer φ), and housing depth (height) with calipers. All three dimensions must match the variant you select. If your equipment uses inch measurements, use the mm-to-inch conversions in the FAQ below.

✅ Key Features of These TC Oil Seals

  • 🔵Double-Lip TC Design — The primary lip retains lubricant while the secondary dust lip blocks dirt, debris, and moisture from entering the housing — a critical advantage for rotary shaft oil seal applications in dirty or wet environments.
  • 🧲Internal Garter Spring — A precision-wound spring maintains constant radial load on the sealing lip, compensating for minor shaft runout and ensuring consistent contact even as the rubber ages.
  • 🔩Rigid Metal Outer Frame — The steel casing provides a firm interference fit in the bore housing, resisting blowout under pressure and simplifying installation with a seal driver or press.
  • 🛢️NBR Nitrile Rubber Compound — Nitrile rubber offers broad compatibility with petroleum-based oils, gear oils, ATF, and water — the most common fluids found in gearbox and engine shaft seal applications.
  • 📐Wide Size Range in One Listing — Inner diameters from 40mm to 45mm with outer diameters from 50mm to 85mm and heights from 5mm to 12mm, covering dozens of common metric shaft seal sizes for engines, pumps, and agricultural machinery.
  • 📦Flexible Quantity Options — Order 1, 2, 5, or 10 pieces per transaction — ideal for a single repair job or stocking a workshop with commonly needed replacement seals.

📐 Technical Specifications — TC Rotary Shaft Oil Seal

Seal Type TC (Double Lip — Oil Retention + Dust Exclusion)
Inner Diameter (Shaft φ) 40mm (≈1.575"), 42mm (≈1.654"), or 45mm (≈1.772") — see variant options
Outer Diameter (Bore φ) 50mm–85mm (≈1.97"–3.35") — see variant options
Height (Seal Width) 5mm–12mm (≈0.20"–0.47") — see variant options
Sealing Material NBR (Nitrile Butadiene Rubber)
Frame / Casing Metal (Steel)
Spring Type Internal Garter Spring
Operating Temperature Typically -40°C to +120°C (-40°F to +250°F)
Max Shaft Speed Typically up to 4–6 m/s (contact us to confirm for your application)
Fluid Compatibility Petroleum oils, gear oil, ATF, water, mild chemicals (not suitable for ketones or strong acids)
Quantity per Order 1, 2, 5, or 10 pieces — select via Qty(pcs) option
Color / Finish See variant options
Country of Origin Contact us to confirm
⚠️ Sizing Tip: The variant label format is Inner φ × Outer φ × Height (all in mm). Measure your existing seal or the shaft/bore directly before selecting. A seal that is even 1mm off in outer diameter may not seat correctly in the housing.

❓ Frequently Asked Questions

How do I choose the correct TC oil seal size?

Measure the shaft (inner diameter), the bore (outer diameter), and the housing depth (height) with calipers. Match all three dimensions to the variant label — for example, 40*60*10mm means 40mm inner φ × 60mm outer φ × 10mm height (≈1.57" × 2.36" × 0.39"). When in doubt, go by the shaft diameter first, then confirm the bore and height fit your housing.

What is the load or pressure rating of these TC oil seals?

TC-type oil seals are generally rated for low-to-medium pressure applications — typically up to 0.3 MPa (≈43 psi) of static pressure. They are designed for rotary shaft sealing rather than high-pressure containment. For high-pressure hydraulic systems, a different seal type is recommended.

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

NBR (nitrile rubber) offers good resistance to water, petroleum-based oils, and mild chemicals, making it suitable for outdoor and wet environments in most cases. However, NBR is not recommended for prolonged exposure to ozone, strong acids, or ketone-based fluids. For extreme outdoor UV exposure, consider a Viton (FKM) seal instead.

What shaft speed and temperature range are these seals rated for?

NBR TC oil seals are generally suitable for shaft surface speeds up to approximately 4–6 m/s and operating temperatures from about -40°F to +250°F (-40°C to +120°C). Actual performance depends on the specific lubricant, shaft finish, and installation conditions.

Are these seals compatible with metric and standard bore housings?

Yes — all dimensions listed are metric (mm). The outer diameter must match your bore housing exactly for a proper interference fit. If your housing uses inch measurements, convert using the variant label (e.g., 40mm ≈ 1.575", 60mm ≈ 2.362"). Contact us to confirm compatibility if you are unsure.

What is the difference between a TC seal and a SC or VC seal?

A TC seal has a double lip — a primary sealing lip that retains oil and a secondary dust lip that keeps contaminants out. SC seals have a single lip (oil retention only). VC seals are a variation with a different casing style. TC seals are the most common choice for general-purpose rotary shaft applications where both oil retention and dust exclusion are needed.

How should I install a TC oil seal to avoid damage?

Clean the bore and shaft thoroughly before installation. Lightly lubricate the seal lip with the fluid it will be sealing. Press the seal in squarely using a seal driver or a flat block — never hammer directly on the seal face. Ensure the seal sits flush or slightly below the housing face. Avoid dragging the lip over sharp keyways or threads.

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

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