TC Skeleton Oil Seals ID 145–155mm | FKM Dual Lip Rotary Shaft Seal

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Sale price$20.28 USD
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In stock (500 units), ready to be shipped

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Description

TC Skeleton Oil Seals ID 145–155mm — FKM Dual Lip Rotary Shaft Sealing for Industrial Equipment

When a worn or incorrectly sized shaft seal causes lubricant leaks in a gearbox, pump, or heavy rotating assembly, the resulting downtime and cleanup costs far exceed the cost of the seal itself. Maintenance engineers, equipment rebuilders, and industrial DIYers working with large-bore rotating shafts in the 145–155mm ID range need a seal that holds up to heat, chemical exposure, and continuous rotation — not one that hardens and cracks after a single season.

Each listing is sold per piece (1 PCS) and covers TC-type skeleton oil seals with an inner diameter (ID) of 145mm (≈5.71"), 150mm (≈5.91"), or 155mm (≈6.10"), outer diameters (OD) ranging from 165mm (≈6.50") to 230mm (≈9.06"), and thicknesses from 10mm (≈0.39") to 17mm (≈0.67"). The sealing element is FKM (fluoroelastomer / Viton-type) rubber bonded to a rigid steel skeleton, with a dual-lip TC profile — a primary oil-retention lip and a secondary dust-exclusion lip.

These rotary shaft oil seals are well-suited for industrial gearbox shaft sealing, centrifugal pump rebuilds, agricultural equipment maintenance, and heavy-duty rotating machinery overhauls where standard NBR seals fail due to elevated temperatures or chemical exposure. The large-bore FKM dual lip seal design makes them a direct replacement in many European and Asian industrial equipment platforms.

🔵 Compatibility Note: Select your exact ID × OD × Thickness from the variant dropdown. Measure your shaft bore, housing bore, and housing depth before ordering. If your size is not listed, contact us — additional sizes may be available.

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

  • 🧪FKM Fluoroelastomer Lip — Resists mineral oils, synthetic gear oils, hydraulic fluids, and many aggressive chemicals; maintains flexibility from approximately -20°C to +200°C (-4°F to +392°F), where standard NBR seals typically fail.
  • 🔩Rigid Steel Skeleton Construction — The embedded metal case holds dimensional stability under press-fit installation, preventing distortion in large-bore housings and ensuring consistent sealing contact around the full circumference.
  • 💧Dual Lip TC Profile — The primary lip retains lubricant; the secondary dust lip blocks ingress of dirt, moisture, and debris — a critical advantage for gearbox shaft sealing in outdoor or contaminated environments.
  • 📐Wide Size Range in One Listing — Covers ID 145mm, 150mm, and 155mm with multiple OD and thickness combinations, reducing the need to source from multiple suppliers for a single rebuild job.
  • ⚙️Designed for Rotary Shaft Applications — The lip geometry and spring-loaded contact are optimized for continuous rotary shaft sealing, not static face sealing, making these suitable for pumps, gearboxes, and drive shafts.
  • 🏭Direct Replacement Fit — Dimensioned to metric standards commonly used in European and Asian industrial equipment; verify your ID × OD × thickness against the variant options for a drop-in replacement in agricultural machinery, industrial pumps, and gearbox overhauls.

📐 Technical Specifications — TC Skeleton FKM Dual Lip Oil Seal

Seal Type TC (Double Lip / Dual Lip Skeleton Oil Seal)
Inner Diameter (ID) 145mm (≈5.71") / 150mm (≈5.91") / 155mm (≈6.10") — see variant options
Outer Diameter (OD) 165mm–230mm (≈6.50"–9.06") — see variant options
Thickness 10mm–17mm (≈0.39"–0.67") — see variant options
Lip Material FKM (Fluoroelastomer / Viton-type rubber)
Case / Skeleton Material Carbon steel (metal-encased)
Lip Configuration Dual lip — primary sealing lip + secondary dust exclusion lip
Operating Temperature Typically -20°C to +200°C (-4°F to +392°F)
Shaft Speed See variant options / Contact us to confirm for your application
Application Rotary shaft sealing — gearboxes, pumps, agricultural equipment, industrial machinery
Quantity per Order 1 PCS
Dimensional Standard Metric (mm)
⚠️ Before ordering: Confirm your shaft ID, housing bore OD, and housing depth (thickness) with calipers. A seal that is even 1–2mm off in any dimension will not seat or seal correctly.

❓ Frequently Asked Questions

How do I choose the right size TC oil seal?

Measure three dimensions: the shaft inner diameter (ID), the housing bore outer diameter (OD), and the housing depth (thickness). Match all three to your variant selection. For example, a 150*180*12mm seal has a 150mm ID (≈5.91"), 180mm OD (≈7.09"), and 12mm thickness (≈0.47"). When in doubt, consult your equipment manual or contact us to confirm before ordering.

What shaft speed can these oil seals handle?

FKM TC skeleton oil seals in this size range are generally rated for rotary shaft surface speeds up to approximately 6–10 m/s, depending on lubrication conditions, shaft surface finish (Ra typically ≤0.8µm recommended), and operating temperature. Always verify against your equipment's specifications.

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

Yes. FKM (Viton-type) rubber typically withstands continuous temperatures from -20°C (-4°F) to +200°C (+392°F), making it well-suited for outdoor machinery, high-heat gearboxes, and applications where standard NBR seals would harden or crack prematurely. FKM also offers good UV and ozone resistance for outdoor equipment.

What fluids are compatible with FKM oil seals?

FKM seals are generally compatible with mineral oils, synthetic gear oils, hydraulic fluids, fuels, and many aggressive industrial chemicals. They are not recommended for use with ketones (MEK, acetone), certain esters, or hot steam applications. Confirm compatibility with your specific fluid before installation if you are unsure.

What is the difference between a single lip and a dual lip TC seal?

A dual lip TC seal has a primary sealing lip that retains lubricant inside the housing and a secondary dust lip that blocks contaminants — dirt, water, and debris — from entering. This makes TC seals the preferred choice for equipment exposed to harsh environments compared to single-lip SC-type seals, which only retain lubricant.

How do I install a large-bore skeleton oil seal correctly?

Clean the housing bore and shaft thoroughly. Lightly lubricate the seal lip with the operating fluid or clean grease. Press the seal squarely into the housing using a seal driver or flat plate — never hammer directly on the seal face. Ensure the seal sits flush or slightly below the housing face. Take care not to nick the lip on shaft keyways or splines during installation, as lip damage will cause immediate leakage.

Can I use these seals in gearboxes and industrial pumps?

Yes. TC skeleton oil seals in the 145–155mm ID range are commonly used in industrial gearboxes, centrifugal pumps, agricultural equipment drive shafts, and heavy-duty rotating machinery. They are a standard replacement seal type in many European and Asian industrial platforms. Confirm the exact ID × OD × thickness matches your housing before ordering.

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

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