TC Oil Seal 125–155mm ID | R23 Double-Lip NBR Rotary Shaft Seal

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TC Oil Seal 125–155mm ID | R23 Double-Lip NBR Rotary Shaft Seal

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Size(ID x OD x Height): 125 x 140 x 10mm

Pack Quantity(Pcs): 1

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$14.81 USD

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In stock (500 units), ready to be shipped

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TC Oil Seal 125–155mm ID — R23 Double-Lip NBR Rotary Shaft Seal for Industrial & Agricultural Equipment

When a leaking shaft seal causes oil loss, bearing contamination, or unplanned downtime on a gearbox, pump, or axle, finding an exact-fit replacement in the right size is the first challenge. These TC oil seals cover inner diameters from 125mm to 155mm (≈4.92" to ≈6.10"), making them a practical stock solution for maintenance teams, equipment rebuilders, and DIY mechanics working on metric machinery.

Each seal follows the R23 / DIN 3760 standard and features a TC (double-lip) arrangement: a primary NBR sealing lip retains lubricant, and a secondary dust exclusion lip blocks contaminants. Sizes are expressed as ID × OD × Height — for example, 125 × 140 × 10mm means a 125mm (≈4.92") inner diameter, 140mm (≈5.51") outer diameter, and 10mm (≈0.39") height. Available in packs of 1, 2, 3, or 5 pieces to suit single repairs or workshop stock.

Typical applications include agricultural tractor PTO shafts and final drives, industrial gearbox output shafts, hydraulic pump shaft seals, and heavy equipment wheel hub seals — anywhere a metric rotary shaft seal in the 125–155mm ID range is required.

🔵 Compatibility: Fits metric shafts and housings per R23 / DIN 3760 standard. Select your exact ID × OD × Height from the variant dropdown. Verify all three dimensions against your equipment before ordering.

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

🔒 TC Double-Lip Design — Primary lip retains lubricant; secondary dust lip blocks dirt and moisture, providing two-barrier protection on rotating shafts in contaminated environments.
🧪 NBR Rubber Compound — Nitrile Butadiene Rubber resists petroleum-based oils, greases, and water across a typical operating range of -40°F to +250°F (-40°C to +120°C), suitable for most industrial and agricultural fluids.
📐 R23 / DIN 3760 Metric Standard — Dimensionally compatible with metric gearboxes, pumps, and axles; ID range 125–155mm (≈4.92"–6.10") with multiple OD and height combinations for precise housing fit.
🏗️ Metal-Cased Outer Shell — The rigid outer casing provides a secure press-fit into the housing bore, maintaining concentricity and preventing seal rotation during operation.
📦 Flexible Pack Quantities — Available in 1, 2, 3, or 5-piece packs, so you can order a single replacement or stock multiple seals for fleet maintenance without overpaying for bulk minimums.
🔧 Wide Application Coverage — Suited for tractor PTO shafts, industrial gearbox output seals, hydraulic pump shaft seals, and heavy equipment wheel hub seals — wherever a metric rotary shaft seal in this size range is needed.

📐 Technical Specifications — TC Double-Lip NBR Rotary Shaft Oil Seal

Seal Type	TC (Double-Lip)
Lip Material	NBR (Nitrile Butadiene Rubber)
Dimensional Standard	R23 / DIN 3760
Inner Diameter (ID) Range	125mm–155mm (≈4.92"–6.10")
Outer Diameter (OD) Range	140mm–200mm (≈5.51"–7.87") — see variant options
Height Range	8mm–18mm (≈0.31"–0.71") — see variant options
Operating Temperature	Typically -40°F to +250°F (-40°C to +120°C)
Fluid Compatibility	Petroleum-based oils, greases, water; not recommended for ozone, strong UV, or certain synthetic fluids
Outer Shell	Metal-cased (press-fit into housing bore)
Lip Configuration	Primary sealing lip (lubricant side) + secondary dust exclusion lip
Pack Quantity Options	1, 2, 3, or 5 pieces per order
Application Pressure	Low-to-medium dynamic shaft sealing; not for high-pressure hydraulics
Shaft Surface Finish	Contact us to confirm recommended Ra value for your application

⚠️ Sizing Note: Seal dimensions are listed as ID × OD × Height. Measure your shaft diameter (= ID), housing bore (= OD), and groove depth (= Height) before selecting a variant. If you are unsure, contact us to confirm.

❓ Frequently Asked Questions

How do I choose the right TC oil seal size?

Match the seal's Inner Diameter (ID) to your shaft diameter, the Outer Diameter (OD) to your housing bore, and the Height to the available groove depth. For example, a shaft of 125mm (≈4.92") needs a seal with ID 125mm. Always verify all three dimensions before ordering. If your shaft is in inches, convert first: 5" ≈ 127mm, 6" ≈ 152mm.

What does TC lip arrangement mean?

TC (Type C) refers to a double-lip design: a primary sealing lip retains lubricant, and a secondary dust lip prevents contaminants from entering the bearing or housing. This dual-barrier design is generally preferred over single-lip (SC) seals in dirty or wet environments such as agricultural fields or outdoor industrial sites.

What is the load or pressure rating of these seals?

NBR TC oil seals are typically rated for low-to-medium pressure applications. They are designed for dynamic sealing on rotating shafts and are not intended for high-pressure hydraulic systems. Contact us to confirm suitability for your specific operating pressure.

Can these seals be used outdoors or in wet environments?

NBR (Nitrile Butadiene Rubber) offers good resistance to petroleum-based oils, greases, and water, making it generally suitable for outdoor use in moderate conditions. However, NBR is not recommended for prolonged exposure to ozone, strong UV, or certain synthetic fluids — in those cases, consider FKM (Viton) seals instead.

What shaft and housing standards are these seals compatible with?

These seals follow the R23 / DIN 3760 dimensional standard, which is widely used in metric machinery including agricultural equipment, industrial gearboxes, pumps, and automotive axles. Always verify the ID, OD, and height match your housing and shaft specifications before installation.

How do I install a TC rotary shaft seal correctly?

Clean the housing bore and shaft. Lightly lubricate the sealing lip with the fluid being sealed. Press the seal squarely into the housing using a seal driver or a flat plate — never hammer directly on the seal face. Ensure the primary lip faces the lubricant side. Avoid nicking the lip on shaft keyways or splines during installation.

What temperature range can NBR oil seals handle?

NBR seals are generally rated for continuous operation from approximately -40°F to +250°F (-40°C to +120°C). Short-term peaks may be tolerated, but sustained high temperatures can accelerate lip wear. Contact us to confirm if your application exceeds this range.

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

TC Oil Seal 125–155mm ID | R23 Double-Lip NBR Rotary Shaft Seal

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TC Oil Seal 125–155mm ID — R23 Double-Lip NBR Rotary Shaft Seal for Industrial & Agricultural Equipment

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

📐 Technical Specifications — TC Double-Lip NBR Rotary Shaft Oil Seal

❓ Frequently Asked Questions

TC Oil Seal 125–155mm ID | R23 Double-Lip NBR Rotary Shaft Seal

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