What load or pressure can these oil seals handle?

TC skeleton oil seals are generally designed for low-to-medium pressure applications — typically up to 0.05 MPa (7 psi) of dynamic pressure. They are not intended for high-pressure hydraulic systems. For higher-pressure environments, a different seal type is recommended.

What thread or shaft standards are these seals compatible with?

These are metric TC-type oil seals compatible with standard metric shafts and bores. They generally follow ISO 6194 / DIN 3760 dimensional standards. If your equipment uses inch-based shafts, verify the metric equivalent before ordering or contact us to confirm compatibility.

What is the difference between a TC seal and other seal types like SC or VC?

A TC seal has a double lip — a primary sealing lip that retains oil and a secondary dust lip that keeps contaminants out. SC seals have a single lip (oil retention only). VC seals are open-type without a secondary lip. TC seals are the most common choice for general-purpose shaft sealing where both oil retention and dust exclusion are needed.

FKM Rubber TC Oil Seal Double Lip Rotary Shaft Seal ID 18–480mm

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FKM Rubber TC Oil Seal Double Lip Rotary Shaft Seal ID 18–480mm

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Size(ID*OD*T): 18*34*7mm

Quantity(PCS): 1PCS

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FKM TC Oil Seal — Double Lip Rotary Shaft Seal for Reliable Fluid Retention

When a worn or incorrect shaft seal lets oil leak past a rotating shaft, the damage goes far beyond a puddle on the floor — contaminated bearings, seized components, and costly downtime follow. Mechanics, equipment technicians, and serious DIYers who need a dependable replacement or upgrade turn to FKM rubber TC skeleton oil seals for their combination of chemical resistance and long service life.

Each seal in this listing is a TC-type (double lip) skeleton oil seal with an FKM (Viton) rubber sealing element bonded to a rigid steel skeleton. Sizes span from 18mm (≈0.71") to 480mm (≈18.9") inner diameter, with outer diameters and thicknesses varying by variant — all dimensions are listed in ID × OD × T (mm) format. Available in single-piece (1PCS) or value 5-pack (5PCS) quantities.

Typical applications include automotive crankshaft and gearbox seals, agricultural and construction equipment shaft seals, industrial gearboxes and pump housings, and hydraulic cylinder rod seals — anywhere a rotating or reciprocating shaft passes through a housing and fluid retention is critical.

🔵 Compatibility: Metric TC-type seals generally conforming to ISO 6194 / DIN 3760. Fits standard metric shafts and bores. Select your exact ID × OD × T size from the variant dropdown above. If your shaft uses inch dimensions, contact us to confirm the metric equivalent.

⚠️ Size Tip: The size format is ID × OD × T — Inner Diameter × Outer Diameter × Thickness, all in millimeters. Measure your shaft (ID), housing bore (OD), and groove depth (T) before selecting a variant. When in doubt, check your equipment's service manual or contact us to confirm.

✅ Key Features of These FKM TC Skeleton Oil Seals

🛡️Double Lip TC Design — The primary lip retains oil while the secondary dust lip blocks dirt, debris, and moisture from entering the bearing cavity, extending component life in contaminated environments.
🔥FKM (Viton) Rubber Compound — Withstands continuous temperatures typically up to 200°C (392°F) and resists petroleum oils, fuels, hydraulic fluids, and many synthetic lubricants — outperforming standard NBR seals in demanding conditions.
⚙️Rigid Steel Skeleton Core — The embedded metal case maintains dimensional stability under press-fit installation, preventing distortion and ensuring consistent sealing contact around the full circumference of the bore.
📐Wide Size Range (ID 18–480mm) — Over 90 size combinations covering small-bore precision equipment up to large industrial shafts, reducing the need to source seals from multiple suppliers for a single job.
🌦️Outdoor and Chemical Resistance — FKM rubber resists UV radiation, ozone, and weathering, making these rotary shaft seals suitable for outdoor machinery, marine equipment, and chemical-adjacent industrial applications.
📦Single or 5-Pack Quantity Options — Order one seal for a targeted repair or a 5-pack for fleet maintenance, rebuild kits, or keeping a critical size on the shelf — with per-unit savings on the multi-pack.

📐 Technical Specifications — FKM TC Skeleton Oil Seal

Seal Type	TC (Double Lip Skeleton Oil Seal)
Material	FKM (Fluoroelastomer / Viton) rubber with steel skeleton
Lip Configuration	Double lip — primary sealing lip + secondary dust exclusion lip
Inner Diameter (ID) Range	18mm (≈0.71") to 480mm (≈18.9")
Outer Diameter (OD)	See variant options (ID × OD × T listed per variant)
Thickness (T)	See variant options (5mm–22mm depending on size)
Operating Temperature	Typically -20°C to +200°C (-4°F to +392°F)
Max Dynamic Pressure	Typically up to 0.05 MPa (7 psi)
Shaft Speed	Contact us to confirm for your specific application
Dimensional Standard	Generally ISO 6194 / DIN 3760 (metric)
Fluid Compatibility	Petroleum oils, hydraulic fluids, fuels, mineral greases; not for ketones or esters
Installation Method	Press-fit into housing bore
Available Quantities	1PCS or 5PCS per order
Country of Origin	Contact us to confirm

❓ Frequently Asked Questions

How do I choose the right TC oil seal size?

The size format is ID × OD × T — Inner Diameter × Outer Diameter × Thickness, all in millimeters. Measure the shaft diameter for ID, the housing bore diameter for OD, and the groove depth for T. For example, a 40×60×7mm seal fits a 40mm (≈1.57") shaft in a 60mm (≈2.36") bore with a 7mm (≈0.28") groove. When in doubt, consult your equipment's service manual or contact us to confirm before ordering.

What pressure and load can these oil seals handle?

TC skeleton oil seals are generally designed for low-to-medium pressure applications — typically up to 0.05 MPa (approximately 7 psi) of dynamic pressure. They are not intended for high-pressure hydraulic circuits. For higher-pressure environments, a different seal type (such as a lip seal with a backup ring) is recommended. Contact us if you need guidance for your specific application.

Are these seals suitable for outdoor or high-temperature environments?

Yes. FKM (Viton) rubber typically withstands continuous temperatures from approximately -20°C to +200°C (-4°F to +392°F), making it well-suited for engine bays, outdoor equipment, and high-heat industrial machinery. FKM also offers excellent resistance to UV radiation, ozone, and weathering — advantages that standard NBR rubber seals generally do not provide.

What shaft and bore standards are these seals compatible with?

These are metric TC-type oil seals that generally conform to ISO 6194 / DIN 3760 dimensional standards. They are designed for standard metric shafts and bores. If your equipment uses inch-based dimensions, verify the metric equivalent before ordering. For example, a 1.5" shaft is approximately 38.1mm — you would typically select the nearest available metric ID. Contact us if you need help matching inch dimensions to a metric seal size.

What fluids and chemicals are FKM seals resistant to?

FKM rubber is generally resistant to petroleum-based oils, hydraulic fluids, fuels, mineral greases, and many synthetic lubricants. It is not recommended for use with ketones (such as MEK or acetone), esters, or certain amines. Always verify chemical compatibility with your specific fluid before installation, especially in industrial or specialty chemical environments.

What is the difference between a TC seal and SC or VC seal types?

A TC seal has a double lip — a primary sealing lip that retains oil and a secondary dust lip that keeps contaminants out. SC seals have a single lip (oil retention only, no dust exclusion). VC seals are open-type without a secondary lip. TC seals are the most common choice for general-purpose shaft sealing where both oil retention and contamination exclusion are needed — such as gearboxes, axles, and engine crankshafts.

Can I use these seals in automotive applications?

Yes. TC oil seals are widely used in automotive applications including crankshaft seals, camshaft seals, gearbox output shaft seals, and wheel hub seals. FKM material is particularly well-suited for engine environments due to its heat and oil resistance. Always confirm the exact ID × OD × T dimensions match your vehicle's specification — check the OEM part number or service manual — before placing your order.

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

FKM Rubber TC Oil Seal Double Lip Rotary Shaft Seal ID 18–480mm

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FKM TC Oil Seal — Double Lip Rotary Shaft Seal for Reliable Fluid Retention

✅ Key Features of These FKM TC Skeleton Oil Seals

📐 Technical Specifications — FKM TC Skeleton Oil Seal

❓ Frequently Asked Questions

FKM Rubber TC Oil Seal Double Lip Rotary Shaft Seal ID 18–480mm

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