R23 20x32x7mm TC Oil Seal Nitrile Rotary Shaft Seal Double Lipped Metric Sizes
R23 20x32x7mm TC Oil Seal Nitrile Rotary Shaft Seal Double Lipped Metric Sizes
R23 20x32x7mm TC Oil Seal Nitrile Rotary Shaft Seal Double Lipped Metric Sizes
R23 20x32x7mm TC Oil Seal Nitrile Rotary Shaft Seal Double Lipped Metric Sizes
R23 20x32x7mm TC Oil Seal Nitrile Rotary Shaft Seal Double Lipped Metric Sizes
R23 20x32x7mm TC Oil Seal Nitrile Rotary Shaft Seal Double Lipped Metric Sizes
R23 20x32x7mm TC Oil Seal Nitrile Rotary Shaft Seal Double Lipped Metric Sizes
R23 20x32x7mm TC Oil Seal Nitrile Rotary Shaft Seal Double Lipped Metric Sizes
R23 20x32x7mm TC Oil Seal Nitrile Rotary Shaft Seal Double Lipped Metric Sizes
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R23 20x32x7mm TC Oil Seal Nitrile Rotary Shaft Seal Double Lipped Metric SizesR23 20x32x7mm TC Oil Seal Nitrile Rotary Shaft Seal Double Lipped Metric SizesR23 20x32x7mm TC Oil Seal Nitrile Rotary Shaft Seal Double Lipped Metric SizesR23 20x32x7mm TC Oil Seal Nitrile Rotary Shaft Seal Double Lipped Metric SizesR23 20x32x7mm TC Oil Seal Nitrile Rotary Shaft Seal Double Lipped Metric SizesR23 20x32x7mm TC Oil Seal Nitrile Rotary Shaft Seal Double Lipped Metric SizesR23 20x32x7mm TC Oil Seal Nitrile Rotary Shaft Seal Double Lipped Metric SizesR23 20x32x7mm TC Oil Seal Nitrile Rotary Shaft Seal Double Lipped Metric SizesR23 20x32x7mm TC Oil Seal Nitrile Rotary Shaft Seal Double Lipped Metric Sizes

R23 20x32x7mm TC Oil Seal Nitrile Rotary Shaft Seal Double Lipped Metric Sizes

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In stock (500 units), ready to be shipped

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Description

R23 20x32x7mm TC Oil Seal — Double-Lipped Nitrile Rotary Shaft Seal for Metric Applications

When a worn or leaking rotary shaft seal causes oil drips, contaminated bearings, or premature equipment failure, finding an exact-fit metric replacement matters. The R23 20x32x7mm TC oil seal is designed for mechanics, maintenance technicians, and hands-on DIYers who need a dependable drop-in seal without guesswork.

This TC-type oil seal features a nitrile rubber (NBR) body bonded to a steel case, with dual sealing lips — a primary oil-retention lip and a secondary dust-exclusion lip. The metric dimensions are 20mm inner diameter × 32mm outer diameter × 7mm width (approximately 0.787" × 1.260" × 0.276"), matching the R23 designation used across a wide range of metric shaft assemblies.

Typical applications include small engine crankshaft seals, gearbox input/output shaft seals, agricultural equipment, power tools, pumps, and light industrial machinery where a 20×32×7mm bore is specified. The double-lip design makes it well-suited for environments where both fluid retention and external contamination exclusion are required.

⚙️ Compatibility: Fits shafts with a 20mm diameter in housings bored to 32mm, with a 7mm seal width. Verify your shaft diameter, housing bore, and seal depth before ordering. Cross-references R23 in standard metric oil seal sizing charts.

✅ Key Features of These TC Oil Seals

🔵 Nitrile Rubber (NBR) Construction

The NBR elastomer body withstands continuous contact with petroleum-based oils, greases, and hydraulic fluids, with a typical service temperature range of −40°F to +250°F (−40°C to +121°C).

🔩 Steel-Reinforced Case

A stamped steel outer case maintains dimensional stability during press-fit installation, preventing distortion and ensuring consistent contact with the housing bore.

💧 Double-Lip (TC) Sealing Design

The primary lip retains lubricants on the inboard side while the secondary dust lip blocks dirt, debris, and moisture from entering the bearing cavity — extending bearing service life.

📏 Exact Metric Sizing — 20×32×7mm

Machined to metric tolerances: 20mm shaft bore, 32mm housing OD, 7mm width. Matches R23 cross-reference designations for straightforward sourcing and replacement.

🔄 Garter Spring-Loaded Primary Lip

An internal garter spring maintains consistent radial lip pressure against the rotating shaft, compensating for minor shaft runout and ensuring a continuous fluid-tight seal over time.

🛠️ Broad Equipment Compatibility

Suitable for small engines, gearboxes, pumps, power tools, and light agricultural machinery where a 20×32×7mm metric TC seal is specified by the OEM or service manual.

📐 Technical Specifications — TC Oil Seal

Part Number / Cross-Ref R23
Seal Type TC (Double Lip with Garter Spring)
Inner Diameter (ID) 20mm (0.787")
Outer Diameter (OD) 32mm (1.260")
Width / Height 7mm (0.276")
Material Nitrile Rubber (NBR) with Steel Case
Lip Configuration Double Lip (Primary oil lip + Secondary dust lip)
Spring Type Garter Spring
Operating Temperature −40°C to +121°C (−40°F to +250°F)
Compatible Fluids Petroleum-based oils, greases, hydraulic fluids
Finish See variant options
Quantity See variant options

❓ Frequently Asked Questions

How do I confirm this seal fits my application?

Measure your shaft diameter (should be 20mm), the housing bore (should be 32mm), and the available seal depth (should be 7mm). These three dimensions must match. Also verify the seal type in your service manual — TC indicates a double-lipped design with a garter spring, which is the configuration of this seal.

What does "TC" mean on an oil seal?

TC is a standard designation for a double-lipped rotary shaft seal with a garter spring. The first lip (primary) retains oil or grease on the inboard side; the second lip (secondary/dust lip) faces outward to block contaminants. This is the most common configuration for general-purpose shaft sealing.

Is nitrile (NBR) the right material for my fluid type?

NBR performs well with petroleum-based engine oils, gear oils, ATF, and most hydraulic fluids. It is not recommended for use with brake fluid (DOT 3/4/5), phosphate-ester hydraulic fluids, or ketone-based solvents. If your application involves these fluids, a Viton (FKM) seal would be more appropriate.

Can this seal handle high-speed rotating shafts?

The garter spring-loaded lip maintains contact at moderate shaft speeds typical of small engines, gearboxes, and pumps. For very high-speed applications (generally above 4–6 m/s shaft surface speed), consult your equipment's service manual for the recommended seal specification, as lip wear rates increase significantly at elevated speeds.

How do I install a TC oil seal without damaging it?

Clean the housing bore and shaft thoroughly. Apply a thin film of clean oil to the seal lip before installation. Use a seal driver or a flat block of wood to press the seal in squarely — never strike the seal directly with a hammer. Press until the outer face is flush with or just below the housing surface. Avoid cocking the seal during installation, as this can permanently deform the lip.

What causes an oil seal to fail prematurely?

Common causes include: shaft surface damage or excessive roughness (ideal finish is 0.2–0.5 µm Ra), shaft runout beyond the seal's compensation range, incorrect installation (cocked or over-pressed), incompatible fluid or chemical exposure, and operating temperatures outside the NBR range. Inspect the shaft surface for grooves or corrosion before fitting a new seal.

Does this seal come with a garter spring pre-installed?

Yes. The garter spring is factory-fitted inside the primary lip. Do not remove it during installation. If the spring dislodges during handling, reseat it in the lip groove before pressing the seal into the housing.

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