Oil Seal 21mm 22mm 23mm 24 mm ID Rotary Shaft Double Lip R23 TC 4 - 12mm Depths

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Oil Seal 21mm 22mm 23mm 24 mm ID Rotary Shaft Double Lip R23 TC 4 - 12mm Depths

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Inner Ø x Outer Ø x Depth: 21 x 26 x 4

Packing Quantity (pcs): 10

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$4.52 USD

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In stock (500 units), ready to be shipped

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TC Double Lip Oil Seal 21–24mm ID — Reliable Rotary Shaft Sealing for Automotive & Industrial Use

When a worn or incorrectly sized shaft seal causes grease leakage, contamination ingress, or premature bearing failure, finding the exact replacement becomes critical. Mechanics, maintenance engineers, and DIY builders working on gearboxes, axles, pumps, and power-transmission assemblies need a TC double lip oil seal that matches their shaft diameter and housing bore precisely — without guesswork.

These TC double lip oil seals feature a nitrile rubber (NBR) sealing body bonded to a carbon steel case, with a garter spring-loaded primary lip and a secondary dust-exclusion lip. Inner diameters span 21 mm to 24 mm (approximately 0.827 in to 0.945 in), outer diameters range from 26 mm to 72 mm (approximately 1.024 in to 2.835 in), and cross-section depths run from 4 mm to 12 mm (approximately 0.157 in to 0.472 in). Each variant is listed by its Inner Ø × Outer Ø × Depth in millimetres so you can match your housing bore and shaft diameter directly.

Typical applications include automotive differential and transmission shaft seals, agricultural and construction equipment gearbox seals, hydraulic pump and motor shaft seals, and general industrial rotary shaft sealing where a TC-type double lip seal is specified. Long-tail search terms such as "21mm ID rotary shaft oil seal replacement," "22mm TC double lip seal gearbox," and "24mm NBR shaft seal automotive" describe exactly the scenarios these seals are designed to solve.

⚙️ Compatibility: Verify your shaft diameter (Inner Ø), housing bore (Outer Ø), and housing depth before ordering. Dimensions are in millimetres. Select your exact size from the variant dropdown above.

✅ Key Features of These TC Double Lip Oil Seals

🔩 TC Double Lip Design — Primary spring-loaded sealing lip retains lubricant; secondary lip excludes dust, dirt, and moisture for extended service life in contaminated environments.

📐 Wide Size Matrix — Inner diameters from 21 mm to 24 mm, outer diameters from 26 mm to 72 mm, and depths from 4 mm to 12 mm cover a broad range of shaft and housing combinations in a single listing.

🛡️ NBR Rubber Body — Nitrile butadiene rubber construction offers resistance to petroleum-based oils, greases, and common hydraulic fluids across a typical operating temperature range of −40 °C to +120 °C (−40 °F to +248 °F).

🏗️ Carbon Steel Case — Rigid outer shell ensures a secure press-fit into the housing bore, maintaining concentricity and preventing seal rotation under operating conditions.

📦 Flexible Pack Quantities — Available in packs of 1, 5, or 10 pieces so you can stock exactly what your workshop or production line requires without over-ordering.

🔍 Dimension-Matched Variants — Each variant is labelled Inner Ø × Outer Ø × Depth (mm), making cross-referencing against OEM part numbers or caliper measurements straightforward.

📐 Technical Specifications — TC Double Lip Rotary Shaft Oil Seal

Seal Type	TC (Double Lip with Garter Spring)
Inner Diameter (ID) Range	21 mm – 24 mm (0.827 in – 0.945 in)
Outer Diameter (OD) Range	26 mm – 72 mm (1.024 in – 2.835 in)
Depth Range	4 mm – 12 mm (0.157 in – 0.472 in)
Sealing Body Material	Nitrile Rubber (NBR)
Case Material	Carbon Steel
Lip Configuration	Double Lip (Primary + Dust Exclusion)
Spring Type	Garter Spring (Primary Lip)
Operating Temperature	−40 °C to +120 °C (−40 °F to +248 °F)
Compatible Fluids	Petroleum-based oils, greases, common hydraulic fluids
Installation Method	Press-fit into housing bore
Packing Quantity	See variant options (1 / 5 / 10 pcs)
Exact Dimensions	See variant options (Inner Ø × Outer Ø × Depth mm)

❓ Frequently Asked Questions

How do I choose the correct oil seal size?

Measure three dimensions with a calliper: the shaft diameter (this becomes the Inner Ø), the housing bore diameter (this becomes the Outer Ø), and the housing depth (this becomes the Depth). Match all three to the variant label shown as Inner Ø × Outer Ø × Depth in millimetres. If your measurements are in inches, multiply by 25.4 to convert to mm.

What does "TC" mean in TC oil seal?

TC is a standard designation for a double-lip rotary shaft seal with a garter spring on the primary lip. The primary lip retains lubricant on the inboard side, while the secondary lip acts as a dust and contamination excluder on the outboard side. This dual-lip design makes TC seals suitable for environments where both oil retention and dirt exclusion are required.

Are these seals compatible with synthetic oils and hydraulic fluids?

The NBR (nitrile rubber) body is compatible with petroleum-based mineral oils, greases, and most standard hydraulic fluids. NBR has limited resistance to some synthetic esters and certain aggressive hydraulic fluids. If your application uses fully synthetic or phosphate-ester-based fluids, please confirm fluid compatibility before ordering.

How strong is the press-fit retention in the housing bore?

The carbon steel outer case is sized to provide an interference fit with the housing bore. Retention force depends on the bore tolerance and surface finish of your housing. For best results, ensure the housing bore is clean, free of burrs, and within the standard H7 or H8 tolerance. Use a flat press tool or seal driver — never hammer directly on the seal face.

What is the operating temperature range, and can these seals handle gearbox heat?

The NBR compound is rated for continuous operation from −40 °C to +120 °C (−40 °F to +248 °F). Most automotive and light industrial gearboxes operate well within this range. For applications where oil temperatures regularly exceed 120 °C, a Viton (FKM) seal may be more appropriate.

Can I order a single seal to test fitment before buying a larger quantity?

Yes. Many size variants are available in a quantity of 1 piece, allowing you to verify fitment in your application before committing to a pack of 5 or 10. Select "1" from the Packing Quantity option in the variant selector above.

How do I install a TC oil seal without damaging the sealing lip?

Clean the shaft and housing bore thoroughly. Apply a thin film of clean oil or grease to the sealing lip and the shaft surface. Use a seal driver or a flat disc of the correct diameter to press the seal squarely into the housing bore until it is flush or just below the housing face. Avoid tilting the seal during installation, and never use a screwdriver or sharp tool near the lip.

🛒 Select your Inner Ø × Outer Ø × Depth size and packing quantity above, then add to cart.

Oil Seal 21mm 22mm 23mm 24 mm ID Rotary Shaft Double Lip R23 TC 4 - 12mm Depths

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Description

TC Double Lip Oil Seal 21–24mm ID — Reliable Rotary Shaft Sealing for Automotive & Industrial Use

✅ Key Features of These TC Double Lip Oil Seals

📐 Technical Specifications — TC Double Lip Rotary Shaft Oil Seal

❓ Frequently Asked Questions

Oil Seal 21mm 22mm 23mm 24 mm ID Rotary Shaft Double Lip R23 TC 4 - 12mm Depths

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