What is the load or pressure rating of these seals?

TC-type double lip oil seals are typically designed for low-to-medium pressure applications. They 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?

The secondary dust lip on TC-type seals generally provides protection against moisture, dust, and light contaminants from the outside. NBR is not recommended for prolonged exposure to ozone, UV, or highly acidic environments. For outdoor or harsh-weather applications, verify compatibility with your conditions.

What shaft surface finish is recommended for these oil seals?

For optimal sealing performance, the shaft surface in contact with the seal lip should typically have a finish of Ra 0.2–0.8 µm (8–32 µin). A shaft that is too rough will accelerate lip wear; too smooth may reduce oil film retention. Consult your equipment manual for exact specifications.

Are these seals compatible with synthetic oils and gear lubricants?

NBR seals are generally compatible with mineral-based oils and many conventional gear lubricants. Compatibility with fully synthetic oils (PAO, ester-based) varies — in most cases NBR performs adequately, but prolonged exposure to certain synthetics may cause swelling. Confirm fluid compatibility before installation.

How do I install a TC skeleton oil seal correctly?

Press the seal squarely into the housing bore using a seal driver or flat press — never hammer directly on the seal face. Lightly lubricate the seal lip with clean oil before installation. Ensure the primary lip faces the oil side (inward) and the dust lip faces outward.

TC Oil Seal Ring | NBR Double Lip Rotary Shaft Seal | ID 205–320mm

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TC Oil Seal Ring | NBR Double Lip Rotary Shaft Seal | ID 205–320mm

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Sizes (ID x OD x Thickness): 205 x 225 x 18mm

Packing QTY (Piece): 1 PCS

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$12.58 USD

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In stock (500 units), ready to be shipped

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TC Double Lip Oil Seal Ring — Reliable Rotary Shaft Sealing for ID 205–320mm Applications

When a worn or incorrectly sized shaft seal lets oil weep past the bearing housing, the resulting mess — and the bearing damage that follows — can sideline equipment for days. Mechanics, machine rebuilders, and industrial maintenance teams working on gearboxes, agricultural equipment, pumps, and heavy-duty axles need a TC oil seal they can trust to press in cleanly and hold tight from the first rotation.

Each seal in this listing is a TC-type skeleton oil seal with an NBR (Nitrile Butadiene Rubber) sealing element bonded to a rigid steel skeleton. The double lip design includes a primary sealing lip that retains oil and a secondary dust exclusion lip that blocks contaminants from the outside. Available in Inner Diameter (ID) sizes from 205mm (≈8.1") to 320mm (≈12.6"), with Outer Diameters (OD) and thicknesses varying by variant — select your exact ID × OD × Thickness combination from the dropdown above.

Typical use cases include gearbox output shaft sealing, agricultural PTO shaft assemblies, industrial pump shaft seals, and heavy equipment axle housing seals — anywhere a large-bore rotary shaft seal is needed to contain lubricant and exclude dust or moisture.

🔵 Compatibility Note: These are metric TC-type oil seals. Verify your shaft OD (= seal ID), housing bore (= seal OD), and housing depth (≥ seal thickness) before ordering. Dimensions are listed as ID × OD × Thickness in millimeters.

⚠️ Confirm your measurements: If you are unsure of your housing bore or shaft diameter, measure with calipers before selecting a variant. An incorrectly sized seal will not seal properly regardless of material quality.

✅ Key Features of These TC Double Lip Rotary Shaft Oil Seals

🔩Steel Skeleton Construction — The rigid metal inner frame maintains the seal's round shape during press-fit installation into the housing bore, preventing distortion that causes leaks.
💧NBR Double Lip Design — The primary lip retains oil and grease on the inboard side; the secondary dust lip blocks dirt, water, and debris from entering — a critical feature for agricultural and outdoor machinery shaft seals.
📐Wide Size Range (ID 205–320mm) — Covers a broad spectrum of large-bore shaft sealing applications in a single listing, from mid-size gearbox output shafts to heavy equipment axle housings.
🌡️NBR Oil & Heat Resistance — Nitrile rubber typically handles continuous operating temperatures from approximately -40°C to +120°C (-40°F to +248°F) and resists petroleum-based oils, hydraulic fluids, and greases.
⚙️Press-Fit OD for Secure Housing Retention — The outer diameter is sized for an interference fit in the housing bore, keeping the seal stationary while the shaft rotates — essential for reliable rotary shaft sealing.
🚚Ships from US Warehouse — Stocked domestically for faster delivery to US customers — no long international waits when you need a replacement seal to get equipment back in service.

📐 Technical Specifications — TC Skeleton NBR Double Lip Oil Seal

Seal Type	TC (Double Lip with Dust Exclusion Lip)
Sealing Material	NBR (Nitrile Butadiene Rubber)
Inner Frame	Steel skeleton (metal-cased)
Inner Diameter (ID) Range	205mm (≈8.1") – 320mm (≈12.6")
Outer Diameter (OD)	See variant options
Thickness	See variant options (typically 10–28mm)
Lip Configuration	Primary oil-retention lip + secondary dust exclusion lip
Operating Temperature	Typically -40°C to +120°C (-40°F to +248°F) for NBR
Compatible Fluids	Petroleum-based oils, mineral gear oils, greases, hydraulic fluids (confirm synthetic compatibility)
Installation Method	Press-fit into housing bore
Shaft Surface Finish	Typically Ra 0.2–0.8 µm recommended
Quantity per Order	1 PCS per variant
Standard	Contact us to confirm

❓ Frequently Asked Questions

How do I choose the right TC oil seal size for my shaft?

Match the Inner Diameter (ID) to your shaft diameter and the Outer Diameter (OD) to your housing bore. Thickness must fit within the housing recess depth. For example, a 220mm shaft in a 260mm bore housing would typically use a 220 × 260mm seal. Always measure all three dimensions with calipers before ordering — do not rely on worn seal markings alone.

What material are these oil seals made from, and what fluids are they compatible with?

The sealing lips are made from NBR (Nitrile Butadiene Rubber), which generally offers good resistance to petroleum-based mineral oils, gear lubricants, greases, and hydraulic fluids. NBR is not recommended for prolonged contact with ozone, UV radiation, ketones, or esters. Compatibility with fully synthetic PAO or ester-based oils varies — confirm before use in those applications.

What pressure and load can these seals handle?

TC-type lip seals are generally designed for low-to-medium pressure applications — typically up to approximately 0.05 MPa (0.5 bar) of differential pressure. They are not suitable for high-pressure hydraulic circuits. For specific pressure ratings relevant to your application, contact us to confirm.

Can these seals be used outdoors or in wet, dusty environments?

The secondary dust lip on TC-type seals provides a meaningful barrier against moisture, mud, and light contaminants — making them a common choice for agricultural equipment, outdoor machinery, and construction equipment shaft sealing. NBR is not recommended for prolonged ozone or UV exposure. For extreme outdoor environments, consider additional external shielding.

What shaft surface finish is needed for a good seal?

For reliable sealing, the shaft surface running against the lip should typically have a finish of Ra 0.2–0.8 µm (8–32 µin). A shaft that is too rough accelerates lip wear; too smooth reduces the oil film that lubricates the lip. Avoid spiral machining marks on the shaft surface, as these can pump oil past the seal.

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

Use a seal driver or flat press sized to the OD — never strike the seal face directly with a hammer. Apply even, square pressure to seat the seal flush with (or slightly below) the housing face. Lightly coat the seal lip with clean oil before installation. Ensure the primary lip faces inward (toward the oil) and the dust lip faces outward.

How do I convert these metric sizes to inches?

Divide millimeters by 25.4 to convert to inches. Quick reference examples: 205mm ≈ 8.07", 240mm ≈ 9.45", 260mm ≈ 10.24", 280mm ≈ 11.02", 300mm ≈ 11.81", 320mm ≈ 12.60". Always use the mm dimensions when selecting your variant to ensure accuracy.

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

TC Oil Seal Ring | NBR Double Lip Rotary Shaft Seal | ID 205–320mm

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Description

TC Double Lip Oil Seal Ring — Reliable Rotary Shaft Sealing for ID 205–320mm Applications

✅ Key Features of These TC Double Lip Rotary Shaft Oil Seals

📐 Technical Specifications — TC Skeleton NBR Double Lip Oil Seal

❓ Frequently Asked Questions

TC Oil Seal Ring | NBR Double Lip Rotary Shaft Seal | ID 205–320mm

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