38mm Bore TC Oil Seal | Metric R23 NBR Rotary Shaft Seal | Multiple OD & Heights

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38mm Bore TC Oil Seal | Metric R23 NBR Rotary Shaft Seal | Multiple OD & Heights

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Size(ID x OD x Height): 38 x 47 x 5mm

Pack Quantity(Pcs): 2

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$2.84 USD

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In stock (500 units), ready to be shipped

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38mm Bore TC Oil Seal — Dual-Lip Metric Rotary Shaft Seal for Gearboxes, Axles & Pumps

When a leaking shaft seal turns a routine maintenance job into a messy, time-consuming overhaul, having the right replacement on hand makes all the difference. Mechanics, equipment technicians, and serious DIYers working on gearboxes, axles, pumps, and agricultural machinery need a reliable metric TC oil seal that installs cleanly and holds up under continuous rotation — without hunting through multiple suppliers for an obscure size.

Each seal in this listing has a fixed 38mm (≈1.496″) inner diameter and is available in a wide range of outer diameters from 47mm (≈1.850″) to 80mm (≈3.150″) and heights from 5mm (≈0.197″) to 12mm (≈0.472″). The body is constructed from NBR (nitrile rubber) bonded to a steel case, following the R23 / TC dual-lip profile per ISO 6194 / DIN 3760 Type AS. Packs of 1, 2, 5, or 10 pieces are available — select your exact size and quantity from the variant dropdowns above.

Typical use cases include replacing worn seals on manual gearbox output shafts, sealing tractor PTO and axle housings, and servicing electric motor end-caps and pump shafts where a 38mm bore TC oil seal is specified. The dual-lip design retains lubricant on the inboard side while the secondary dust lip blocks ingress of dirt and moisture — a combination that extends re-lubrication intervals in both workshop and field environments.

ⓘ Compatibility Note: Verify all three dimensions — Inner Diameter (ID), Outer Diameter (OD), and Height — against your housing and shaft before ordering. This seal has a fixed 38mm ID; OD and Height vary by variant. Dimensions are metric (mm). Imperial equivalents are approximate.

✅ Key Features of These 38mm TC Oil Seals

🔄R23 Dual-Lip TC Profile — Primary sealing lip retains oil and grease while the secondary dust lip blocks dirt and moisture ingress, reducing contamination-related wear in rotary shaft applications.
⚙NBR Nitrile Rubber Construction — Nitrile compound resists petroleum-based oils, greases, and hydraulic fluids across a typically rated range of -40°F to +250°F (-40°C to +120°C), suitable for most gearbox and axle environments.
📏Wide Size Selection — 38mm Fixed Bore — OD ranges from 47mm to 80mm and heights from 5mm to 12mm, covering a broad range of housing bores for gearboxes, pumps, and agricultural equipment with a 38mm shaft.
🔧Steel-Cased Body for Press-Fit Retention — The metal outer case provides a firm interference fit in the housing bore, resisting rotation and maintaining concentricity during shaft operation.
📦Flexible Pack Quantities — Available in packs of 1, 2, 5, or 10 pieces, making it practical to order a single replacement seal or stock spares for fleet maintenance and workshop inventory.
📌Metric R23 / ISO 6194 Standard — Conforms to the widely adopted DIN 3760 Type AS / ISO 6194 metric standard, ensuring dimensional interchangeability with OEM and aftermarket 38mm TC rotary shaft seals.

📐 Technical Specifications — 38mm TC Oil Seal (R23 NBR)

Seal Type	TC (R23) — Dual Lip, Rotary Shaft Oil Seal
Standard	ISO 6194 / DIN 3760 Type AS (R23)
Inner Diameter (ID)	38mm (≈1.496″) — fixed across all variants
Outer Diameter (OD)	47mm – 80mm (≈1.850″ – 3.150″) — see variant options
Height (Width)	5mm – 12mm (≈0.197″ – 0.472″) — see variant options
Lip Material	NBR (Nitrile Butadiene Rubber)
Case Material	Steel (metal-cased)
Lip Configuration	Dual lip — primary sealing lip + secondary dust lip
Operating Temperature	Typically -40°F to +250°F (-40°C to +120°C) for NBR
Max. Shaft Speed	Typically up to 4–6 m/s surface speed (contact us to confirm)
Pressure Rating	Low-pressure applications — typically ≤ 0.3 bar (≈4.4 psi)
Fluid Compatibility	Petroleum-based oils, greases, hydraulic fluids (NBR-compatible)
Pack Quantity	1 / 2 / 5 / 10 pieces — select above
Country of Origin	See variant options

⚠ Size Confirmation: If you are unsure of your housing OD or groove height, measure the old seal or consult your equipment service manual before ordering. The ID is fixed at 38mm — confirm OD and Height match your application.

❓ Frequently Asked Questions

How do I choose the right TC oil seal size?

Match the Inner Diameter (ID) to your shaft diameter — this product has a fixed 38mm (≈1.496″) bore. Then match the Outer Diameter (OD) to your housing bore, and select a Height that fits your groove depth. All three dimensions are listed in the variant selector as ID × OD × Height. For example, a seal marked 38 × 52 × 8mm has a 38mm shaft bore, fits a 52mm housing bore, and is 8mm (≈5/16″) wide.

What does "TC" mean in TC oil seal?

TC (also written R23) refers to a dual-lip seal design: a primary sealing lip retains lubricant and a secondary dust lip excludes contaminants. This is the most widely used configuration for rotary shaft applications and is interchangeable with seals marked R23, TC, or DIN 3760 Type AS.

What is the load or pressure rating of these seals?

TC oil seals are generally designed for low-pressure applications — typically up to 0.3 bar (≈4.4 psi) of differential pressure. They are not intended for high-pressure hydraulic circuits. Contact us to confirm suitability for your specific application.

Can these seals be used outdoors or in wet environments?

NBR (nitrile rubber) offers good resistance to water, oils, and mild weather exposure. For prolonged outdoor UV exposure or contact with ozone, a Viton (FKM) seal is generally recommended. For typical outdoor machinery with grease or oil lubrication — such as tractor axles or PTO shafts — NBR is usually adequate.

What shaft speed and temperature range are these seals rated for?

NBR TC oil seals are typically 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 limits depend on lubrication, shaft finish, and eccentricity. Contact us to confirm for your specific application.

Are these metric or imperial seals, and what standard do they follow?

These are metric seals conforming to the R23 / TC lip arrangement standard (ISO 6194 / DIN 3760 Type AS). All dimensions are in millimeters. The 38mm bore is equivalent to approximately 1.496 inches. They are dimensionally interchangeable with any seal specified as 38mm TC, R23, or DIN 3760 AS.

Which applications are these seals commonly used in?

Common uses include manual gearbox output shafts, tractor PTO and axle housings, electric motor end-caps, centrifugal pumps, agricultural equipment, and general industrial machinery where a 38mm shaft requires oil retention and dust exclusion.

How many pieces come in each order?

You can select 1, 2, 5, or 10 pieces per order using the Pack Quantity option. Buying in larger quantities reduces the per-unit cost — useful for workshop stock or fleet maintenance programs.

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

38mm Bore TC Oil Seal | Metric R23 NBR Rotary Shaft Seal | Multiple OD & Heights

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Description

38mm Bore TC Oil Seal — Dual-Lip Metric Rotary Shaft Seal for Gearboxes, Axles & Pumps

✅ Key Features of These 38mm TC Oil Seals

📐 Technical Specifications — 38mm TC Oil Seal (R23 NBR)

❓ Frequently Asked Questions

38mm Bore TC Oil Seal | Metric R23 NBR Rotary Shaft Seal | Multiple OD & Heights

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