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home > TC Skeleton Oil Seals ID 310–380mm Rotary Shaft FKM Dual Lip Seal > TC Skeleton Oil Seals ID 310–380mm Rotary Shaft FKM Dual Lip Seal

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TC Skeleton Oil Seals ID 310–380mm Rotary Shaft FKM Dual Lip SealTC FKM Dual Lip Oil Seals Large Bore Rotary Shaft Sealing for Industrial & Agricultural Equipment When a worn or leaking shaft seal lets oil escape from a gearbox, pump, or axle, the resulting contamination can damage bearings, void warranties, and force costly downtime. Maintenance technicians and equipment rebuilders working on large bore machinery from agricultural combines and industrial gearboxes to heavy construction equipment need a seal that

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TC FKM Dual Lip Oil Seals — Large-Bore Rotary Shaft Sealing for Industrial & Agricultural Equipment

When a worn or leaking shaft seal lets oil escape from a gearbox, pump, or axle, the resulting contamination can damage bearings, void warranties, and force costly downtime. Maintenance technicians and equipment rebuilders working on large-bore machinery — from agricultural combines and industrial gearboxes to heavy construction equipment — need a seal that holds up under heat, chemical exposure, and continuous rotation without constant replacement.

Each listing is for 1 piece of a TC skeleton oil seal made from FKM (Fluoroelastomer / Viton) with a spring-reinforced metal skeleton frame. Available sizes span an inner diameter (ID) of 310mm (≈12.2") to 380mm (≈15.0"), outer diameter (OD) of 340mm (≈13.4") to 420mm (≈16.5"), and thickness of 15mm (≈0.59") to 20mm (≈0.79") — select the exact ID × OD × Thickness variant that matches your housing.

Typical applications include large agricultural gearbox shaft sealing, industrial pump rotary shaft replacement seals, and heavy equipment axle oil seal repair — anywhere a reliable, chemically resistant dual-lip seal is required on a large-diameter rotating shaft.

🔵 Compatibility Note: These TC oil seals fit any housing where the bore ID, OD, and depth match the selected variant dimensions. Verify all three measurements — ID × OD × Thickness — against your equipment's service manual or the worn seal before ordering.

✅ Key Features of These TC FKM Dual Lip Skeleton Oil Seals

🛡️Dual Lip TC Design — The primary sealing lip retains lubricant while the secondary dust lip blocks dirt, debris, and moisture from reaching the bearing cavity, extending equipment service intervals.
🔥FKM (Viton) Elastomer — Fluoroelastomer compound resists mineral oils, gear oils, hydraulic fluids, and elevated temperatures typically up to 200°C (392°F), outperforming standard NBR seals in demanding environments.
⚙️Spring-Reinforced Metal Skeleton — The internal garter spring maintains consistent radial lip pressure against the shaft surface, compensating for minor shaft runout and preventing lip rollover during installation.
📐Wide Size Range — ID 310–380mm — 24 variants covering large-bore rotary shaft applications from 310mm to 380mm ID, with multiple OD and thickness options per shaft diameter for precise housing fitment.
🌿Chemical & UV Resistance — FKM compound withstands ozone, UV exposure, and a broad range of petroleum-based and synthetic fluids, making these seals suitable for outdoor agricultural and industrial machinery.
🔄Standardized TC Dimensions — Dimensionally interchangeable with OEM TC-type seals of the same ID × OD × Thickness, simplifying cross-referencing for large gearbox shaft seal replacement across multiple equipment brands.

📐 Technical Specifications — TC FKM Rotary Shaft Oil Seals

Seal Type	TC (Double Lip, Spring-Loaded, Skeleton)
Lip Material	FKM (Fluoroelastomer / Viton)
Frame / Skeleton	Metal (spring-reinforced inner case)
Inner Diameter (ID) Range	310mm (≈12.2") – 380mm (≈15.0")
Outer Diameter (OD) Range	340mm (≈13.4") – 420mm (≈16.5")
Thickness Range	15mm (≈0.59") – 20mm (≈0.79")
Available Size Variants	See variant options (ID × OD × Thickness)
Operating Temperature	Typically -20°C (-4°F) to +200°C (+392°F)
Shaft Surface Speed	Typically up to 4–8 m/s (contact us to confirm for your application)
Pressure Rating	Generally suitable for low-pressure applications (typically ≤0.05 MPa)
Fluid Compatibility	Mineral oils, gear oils, hydraulic fluids, diesel fuel, many synthetic lubricants
Quantity per Order	1 PCS
Finish / Color	See variant options
Country of Origin	Contact us to confirm

⚠️ Before ordering: Measure your housing bore ID, OD, and depth precisely. A seal that is even 1–2mm off in any dimension will not seat correctly and may leak. When replacing a worn seal, measure the housing — not the old seal, which may have deformed.

❓ Frequently Asked Questions

How do I choose the right size TC oil seal for my application?

Measure the shaft inner diameter (ID), the housing bore outer diameter (OD), and the housing depth (thickness). Match all three dimensions to the variant listed as ID × OD × Thickness in mm. For reference, 310mm is approximately 12.2" and 380mm is approximately 15.0". When in doubt, consult your equipment's service manual or contact us to confirm.

What does "TC" mean in TC skeleton oil seal?

TC designates a double-lip (dual lip) seal with a metal skeleton (spring-reinforced) inner frame. The primary lip retains lubricant while the secondary dust lip prevents contaminants from entering the bearing or gearbox cavity.

How much shaft speed and pressure can these FKM seals handle?

FKM (Viton) TC oil seals in this size range are generally rated for shaft surface speeds up to approximately 4–8 m/s and low-pressure applications (typically under 0.05 MPa). Exact limits depend on shaft finish, lubrication, and operating temperature. Consult your equipment specifications for confirmation.

Are these seals suitable for outdoor or high-temperature environments?

Yes. FKM (Fluoroelastomer/Viton) offers excellent resistance to heat, UV, ozone, and a wide range of oils and chemicals. These seals are generally rated for continuous service from approximately -20°C (-4°F) to +200°C (+392°F), making them well-suited for industrial, agricultural, and outdoor machinery.

What fluids and chemicals are FKM oil seals compatible with?

FKM seals are generally compatible with mineral oils, hydraulic fluids, gear oils, diesel fuel, and many synthetic lubricants. They are not typically recommended for use with ketones, certain esters, or hot water/steam applications. Always verify compatibility with your specific fluid before installation.

How do I install a large-diameter TC skeleton oil seal without damaging the lip?

Clean the housing bore and shaft. Lightly lubricate the seal lip with the fluid being sealed. Use a seal driver or a flat pressing tool that contacts the outer metal case evenly — never strike the seal lip directly. Press squarely until the seal face is flush with or just below the housing surface.

Can I use these seals on equipment from different manufacturers?

TC skeleton oil seals are dimensionally standardized (ID × OD × Thickness), so they are generally interchangeable across brands as long as the three dimensions match. Verify the dimensions against your OEM part number or measure the worn seal before ordering.

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

TC Skeleton Oil Seals ID 310–380mm Rotary Shaft FKM Dual Lip Seal

Name: TC Skeleton Oil Seals ID 310–380mm Rotary Shaft FKM Dual Lip Seal
Brand: geomorr.pl
SKU: 45071188339
Price: 80.17 USD
Availability: InStock
Rating: 4.0405 (1208 reviews)