Are these seals compatible with metric and standard (inch) shaft sizes?

All dimensions listed are metric (mm). The ID 23mm, 24mm, and 25mm shafts correspond approximately to 0.906" , 0.945" , and 0.984" respectively. If your equipment uses inch-based shafts, verify the exact metric equivalent before ordering, as a small mismatch will cause leakage.

TC Oil Seal Rings NBR Double Lip Rotary Shaft Seals — ID 23mm 24mm 25mm

Roll over image to zoom in Click on image to zoom

TC Oil Seal Rings NBR Double Lip Rotary Shaft Seals — ID 23mm 24mm 25mm

HomeDIYer

No reviews

By HomeDIYer®

Sizes (ID x OD x Thickness): 23 x 30 x 4mm

Packing QTY (Piece): 2 PCS

Price:

$4.81 USD

Stock:

In stock (500 units), ready to be shipped

Quantity:

Share this product

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Quantity Discount Promotion

DIY Expert Support

Get fitment advice & recommendations

Mon-Fri, 8:30AM-8PM

WhatsApp Email

⚡

24-Hour Fast Ship

🚚

Arrives in 3-14 days

🌍

Global Reach

↩️

30-Day Returns

🌱 1 tree planted with every purchase

TC Oil Seal Rings — NBR Double Lip Rotary Shaft Seals for ID 23mm, 24mm & 25mm Shafts

When a worn or incorrectly sized rotary shaft seal lets oil weep past the housing, the mess is only the beginning — contaminated bearings, seized components, and costly downtime follow quickly. Mechanics, equipment rebuilders, and serious DIYers who work on gearboxes, axles, pumps, and small engines need a reliable TC oil seal that installs cleanly and holds up under continuous rotation. These TC skeleton oil seal rings are built for exactly that job.

Each set ships as 2 pieces (select 1 PCS where available). The seals feature a NBR (nitrile rubber) double-lip TC design with a steel skeleton reinforcement and an integrated garter spring. Inner diameter (ID) options cover 23mm (≈0.906″), 24mm (≈0.945″), and 25mm (≈0.984″); outer diameters range from 30mm up to 80mm and thickness from 3mm to 15mm — choose the exact ID × OD × Thickness combination from the variant selector above.

Typical applications include automotive differential and transmission output shafts, agricultural equipment PTO seals, hydraulic pump shaft seals, small engine crankshaft seals, and industrial gearbox input/output seals — anywhere a metric rotary shaft seal with a 23–25mm bore is required.

ℹ️ Compatibility Note: These are metric TC-type skeleton oil seals. Verify your shaft ID, housing bore OD, and housing depth before ordering. Dimensions are listed as ID × OD × Thickness (mm) in the variant selector.

⚠️ Size Confirmation: If you are replacing an existing seal, measure the old seal or check your equipment service manual for the exact three-dimensional specification. A 1mm mismatch in any dimension can cause leakage or installation failure.

✅ Key Features of These TC Oil Seal Rings

🔩Double-Lip TC Design — The primary sealing lip retains lubricant while the secondary dust lip blocks contaminants, making these rotary shaft oil seals suitable for both clean and dirty operating environments.
🧲Steel Skeleton with Garter Spring — The rigid metal skeleton maintains dimensional stability under press-fit installation, and the integrated garter spring keeps consistent radial lip pressure against the shaft surface.
🌡️NBR Nitrile Rubber Compound — NBR offers broad compatibility with petroleum-based oils, ATF, gear oil, and grease, and is generally rated from approximately -40°F to +250°F (-40°C to +120°C) for continuous shaft sealing duty.
📐Wide Size Selection — ID 23mm, 24mm & 25mm — Over 200 ID × OD × Thickness combinations cover a broad range of metric gearbox, axle, pump, and engine shaft seal replacements without special ordering.
⚙️Metric Dimensions, Direct-Fit Replacement — All variants follow standard metric TC oil seal sizing conventions, making cross-referencing against OEM part numbers and bearing catalogs straightforward for professional technicians.
📦Sold in 2-Piece Sets (1 PCS also available) — Stocking a spare at the time of installation is a common workshop practice; the 2 PCS pack makes that easy without overstocking.

📐 Technical Specifications — TC Skeleton Oil Seal Rings

Seal Type	TC (Double Lip Skeleton Oil Seal)
Lip Material	NBR (Nitrile Butadiene Rubber)
Reinforcement	Steel skeleton (metal case)
Spring Type	Garter spring (integrated)
Inner Diameter (ID)	23mm (≈0.906″) / 24mm (≈0.945″) / 25mm (≈0.984″)
Outer Diameter (OD)	30mm – 80mm (see variant options)
Thickness	3mm – 15mm (see variant options)
Operating Temperature	Typically -40°F to +250°F (-40°C to +120°C)
Max Shaft Speed	Typically up to ~4–6 m/s (contact us to confirm)
Pressure Rating	Low-to-medium dynamic pressure (generally ≤0.3 bar)
Fluid Compatibility	Petroleum oils, ATF, gear oil, grease (NBR-compatible fluids)
Packing Quantity	2 PCS per set (1 PCS available on select sizes)
Color / Finish	See variant options
Country of Origin	Contact us to confirm

❓ Frequently Asked Questions

How do I choose the right TC oil seal size?

Measure three dimensions: the shaft inner diameter (ID), the housing bore outer diameter (OD), and the housing depth (thickness). Match all three to the variant listed as ID × OD × Thickness. For example, a 25 × 47 × 7mm seal fits a 25mm (≈1″) shaft, a 47mm bore, and a 7mm housing depth. When replacing an existing seal, measure the old part or consult your equipment service manual for the exact specification.

What does "TC" mean on an oil seal?

TC designates a double-lip skeleton oil seal. The primary lip retains lubricant while the secondary dust lip prevents contaminants from entering the housing. This dual-lip design is generally preferred over single-lip (SC) seals in applications where dirt, water, or debris are present alongside the lubricant.

What pressure and load can these seals handle?

TC skeleton oil seals are typically rated for low-to-medium pressure applications — generally up to about 0.3 bar (≈4.4 psi) of dynamic pressure. They are designed for rotary shaft sealing rather than high-pressure hydraulic containment. If your application involves elevated pressure, contact us to confirm suitability before ordering.

Can these seals be used outdoors or in wet environments?

NBR (nitrile rubber) offers good resistance to petroleum-based oils, greases, and mild water exposure, making it generally suitable for outdoor use in moderate conditions. For prolonged UV exposure, saltwater immersion, or aggressive chemical environments, a FKM (Viton) seal is typically recommended instead.

What shaft speed and temperature range do these seals support?

NBR TC oil seals are generally rated 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 lubricant type, shaft surface finish (Ra typically ≤0.8 µm recommended), and installation conditions. Contact us to confirm for your specific application.

Are these seals compatible with metric and inch shaft sizes?

All dimensions listed are metric (mm). The ID options correspond approximately as follows: 23mm ≈ 0.906″, 24mm ≈ 0.945″, 25mm ≈ 0.984″. If your equipment uses inch-based shafts, verify the exact metric equivalent before ordering — a small mismatch will cause leakage or prevent proper installation.

How do I install a TC skeleton oil seal correctly?

Clean the housing bore and shaft thoroughly. Lightly lubricate the seal lip with the fluid being sealed. Press the seal squarely into the bore using a seal driver or a flat block — never hammer directly on the seal face. The garter spring side (open side) typically faces the lubricant source. Avoid cocking or tilting during installation, as this is the most common cause of premature seal failure.

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

TC Oil Seal Rings NBR Double Lip Rotary Shaft Seals — ID 23mm 24mm 25mm

Payment & Security

Let customers speak for us

DIY Expert Support

Description

TC Oil Seal Rings — NBR Double Lip Rotary Shaft Seals for ID 23mm, 24mm & 25mm Shafts

✅ Key Features of These TC Oil Seal Rings

📐 Technical Specifications — TC Skeleton Oil Seal Rings

❓ Frequently Asked Questions

TC Oil Seal Rings NBR Double Lip Rotary Shaft Seals — ID 23mm 24mm 25mm

You may also like

Recently viewed