TC Oil Seal Ring ID 8–27mm | Nitrile Rubber Double Lip Shaft Seal with Metal Frame & Spring

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TC Oil Seal Ring ID 8–27mm | Nitrile Rubber Double Lip Shaft Seal with Metal Frame & Spring

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Size(ID x OD x Height): 8*18*5mm

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TC Double-Lip Oil Seal Ring — Stop Shaft Leaks with a Nitrile Rubber Seal That Holds

When a gearbox starts weeping oil, a motor shaft leaves a puddle on the floor, or a pump loses prime because the shaft seal has worn out, the fix is straightforward — but only if you have the right replacement seal. Mechanics, equipment technicians, and serious DIYers who work on small engines, agricultural machinery, electric motors, and hydraulic systems need a seal they can trust to seat cleanly and stay put.

Each listing covers a single TC-type (double-lip) skeleton oil seal. The seal body combines a nitrile rubber (NBR) sealing element bonded to a rigid metal frame, with an internal garter spring that maintains constant lip pressure against the rotating shaft. Sizes span inner diameters from 8mm (≈5/16") to 27mm (≈1-1/16"), with outer diameters and heights varying by variant — for example, a 20×35×7mm seal fits a 20mm (≈0.787") shaft, a 35mm (≈1.378") bore, and a 7mm (≈0.276") housing depth. Available in 1-piece or 5-piece quantities.

Typical applications include replacing worn shaft seals in electric motor end caps, small engine crankshafts, gearbox output shafts, hydraulic pump input shafts, and agricultural equipment drive shafts — anywhere a rotating shaft passes through a housing and oil retention plus dust exclusion are both required.

🔵 Compatibility Note: These are metric-dimensioned seals (mm). Verify your shaft ID, bore OD, and housing height before ordering. Dimensions are listed as ID × OD × Height in each variant name. Generally compatible with ISO 6194 / DIN 3760 metric shaft seal standards.

⚠️ Size Confirmation: With 100+ size combinations available, please double-check all three dimensions (ID, OD, and height) against your original seal or equipment service manual before adding to cart.

✅ Key Features of These TC Double-Lip Nitrile Oil Seals

🔄TC Double-Lip Design — Two sealing lips work together: the primary lip retains oil while the secondary dust lip blocks contaminants, making these seals suitable for rotating shaft applications in dirty or wet environments.
🧲Internal Garter Spring — A precision-wound spring maintains consistent radial lip pressure against the shaft surface as it rotates, compensating for minor shaft runout and extending service life compared to springless designs.
🔩Rigid Metal Frame (FB Skeleton) — The full-bonded metal case provides dimensional stability during press-fit installation into the housing bore, reducing the risk of distortion that can cause leaks.
🛢️Nitrile Rubber (NBR) Lip Material — NBR offers broad compatibility with petroleum-based oils, greases, water, and mild hydraulic fluids, covering the majority of rotating shaft seal applications in motors, gearboxes, and small engines.
📐Wide Size Range in One Listing — Inner diameters from 8mm to 27mm with multiple OD and height combinations let you find the exact replacement seal for small motors, pumps, and agricultural equipment without sourcing from multiple suppliers.
📦Single or 5-Pack Quantity Options — Order one seal for an immediate repair or a 5-pack to keep spares on hand for fleet maintenance, workshop stock, or equipment with multiple shaft seals of the same size.

📐 Technical Specifications — TC Skeleton Oil Seal Ring

Seal Type	TC (Double-Lip, Full-Bonded Skeleton)
Lip Material	Nitrile Rubber (NBR)
Frame / Case	Metal (steel), full-bonded to rubber element
Spring	Internal garter spring (included)
Inner Diameter (ID) Range	8mm (≈5/16") to 27mm (≈1-1/16")
Outer Diameter (OD)	See variant options (18mm–62mm range across variants)
Height / Width	See variant options (5mm, 7mm, 8mm, 10mm available)
Dimension Format	ID × OD × Height (mm)
Operating Temperature	Typically -40°F to +212°F (-40°C to +100°C)
Compatible Fluids	Petroleum-based oils, greases, water, mild hydraulic fluids
Standard Compatibility	Generally ISO 6194 / DIN 3760 metric
Quantity per Order	1 piece or 5 pieces (select variant)
Application	Rotating shaft sealing — motors, gearboxes, pumps, small engines

❓ Frequently Asked Questions

How do I choose the right TC oil seal size?

Measure three dimensions from your original seal or housing: the inner diameter (ID) that contacts the shaft, the outer diameter (OD) that presses into the bore, and the height (axial depth). Match all three to the variant listed as ID × OD × Height in mm. For example, a 20×35×7mm seal fits a 20mm shaft, a 35mm bore, and a 7mm housing depth. If you only have inch measurements, multiply by 25.4 — e.g., 0.787" ≈ 20mm, 1.378" ≈ 35mm, 0.276" ≈ 7mm.

What load or pressure can these oil seals handle?

TC-type oil seals are generally designed for low-to-medium pressure dynamic sealing. They are typically suitable for shaft surface speeds up to approximately 4–8 m/s, depending on size and installation conditions. For high-pressure hydraulic circuits, a dedicated hydraulic rod or piston seal is generally recommended instead.

Are these oil seals suitable for outdoor or wet environments?

The nitrile rubber (NBR) lip material offers good resistance to water, petroleum-based oils, and mild weather exposure. These seals are well-suited for enclosed housings in outdoor equipment such as lawn mowers, tillers, and small engines. For prolonged exposure to ozone, UV, or aggressive chemicals, a Viton (FKM) seal is generally recommended.

What shaft and bore standards are these seals compatible with?

These TC oil seals use metric dimensions (mm) and are generally compatible with shafts and housings conforming to ISO 6194 and DIN 3760 metric shaft seal standards. Always verify the ID, OD, and height against your equipment's service manual or the original seal's markings before ordering.

How do I know if I need a TC-type or SC-type oil seal?

A TC seal has two sealing lips — the primary lip retains oil and the secondary dust lip keeps contaminants out. An SC seal has a single lip. TC seals are generally preferred when both oil retention and dust exclusion are needed, such as in gearboxes, motors, and agricultural equipment. If your original seal has two visible lips, replace it with a TC type.

What temperature range can these nitrile oil seals handle?

Nitrile rubber (NBR) oil seals typically operate in a range of approximately -40°F to +212°F (-40°C to +100°C). Short-term peaks up to +230°F (+110°C) are generally tolerable. For continuous high-temperature applications above this range — such as near exhaust components — a silicone or Viton seal is typically recommended.

Can I use these seals on a rotating shaft in a pump or motor?

Yes. TC skeleton oil seals are specifically designed for rotating shaft applications including electric motors, hydraulic pumps, gearboxes, differentials, and small engines. The internal garter spring maintains consistent lip contact pressure against the shaft as it rotates, which is essential for dynamic sealing performance.

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

TC Oil Seal Ring ID 8–27mm | Nitrile Rubber Double Lip Shaft Seal with Metal Frame & Spring

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Beschreibung

TC Double-Lip Oil Seal Ring — Stop Shaft Leaks with a Nitrile Rubber Seal That Holds

✅ Key Features of These TC Double-Lip Nitrile Oil Seals

📐 Technical Specifications — TC Skeleton Oil Seal Ring

❓ Frequently Asked Questions

TC Oil Seal Ring ID 8–27mm | Nitrile Rubber Double Lip Shaft Seal with Metal Frame & Spring

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