What thread or shaft standard do these seals fit?

These are metric TC oil seals sized in millimeters (ID × OD × Thickness). They are compatible with metric shafts following ISO 6194 / DIN 3760 standards. They do not use thread standards — they press-fit into a machined bore. Verify your bore and shaft dimensions before ordering.

TC Oil Seal Metric — Double-Lip Rotary Shaft Seal (ID 8–45mm)

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TC Oil Seal Metric — Double-Lip Rotary Shaft Seal (ID 8–45mm)

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ID*OD*Thickness: 8*22*7mm

QTY: 1 Pcs

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$2.28 USD

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In stock (500 units), ready to be shipped

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TC Double-Lip Oil Seal — Metric Rotary Shaft Seal for Gearboxes, Pumps & Motors

When a leaking shaft seal turns a routine maintenance job into a messy, costly teardown, having the right metric TC oil seal on hand makes all the difference. Mechanics, equipment owners, and DIYers working on gearboxes, hydraulic pumps, electric motors, and agricultural machinery all face the same frustration: sourcing an exact-dimension replacement seal quickly without overpaying for a dealer part.

Each seal in this listing is a TC-type double-lip rotary shaft seal made with a nitrile rubber (NBR) sealing element bonded to a steel outer case. The double-lip design includes a primary dynamic sealing lip with a garter spring for consistent radial load, plus a secondary dust-exclusion lip. Available in a wide range of metric sizes — inner diameter (ID) from 8mm (≈5/16") to 45mm (≈1-3/4"), outer diameter (OD) from 22mm to 80mm, and thickness from 5mm to 12mm — ordered as individual pieces (1 Pcs per variant). Select your exact ID × OD × Thickness from the variant dropdown above.

These metric TC oil seals are well-suited for gearbox output shaft sealing, pump crankshaft seal replacement, and wheel hub bearing seal applications on compact tractors, tillers, log splitters, and small engine equipment. The spring-loaded lip maintains contact even as the shaft wears slightly over time, making it a reliable choice for preventive maintenance kits and field repair jobs.

ℹ️ Compatibility Note: These are metric seals sized in millimeters (ID × OD × Thickness). Measure your shaft OD, bore ID, and housing depth with calipers before ordering. Standard NBR material is compatible with petroleum-based oils, ATF, and gear oil. Not recommended for use with aggressive solvents or Skydrol fluid without confirming material compatibility.

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

🔩Double-Lip TC Design — The outer dust lip blocks dirt and moisture ingress while the inner spring-loaded lip maintains a consistent seal against the rotating shaft, reducing contamination-related wear in gearbox shaft seal applications.
🌀Garter Spring-Loaded Primary Lip — An internal garter spring applies uniform radial pressure around the shaft circumference, compensating for minor shaft runout and keeping the seal effective throughout the service interval.
🛡️Nitrile Rubber (NBR) Sealing Element — NBR offers broad compatibility with petroleum-based lubricants, gear oils, and ATF fluids commonly found in rotary shaft seal replacement jobs on small engines and power equipment.
⚙️Steel Outer Case for Secure Press-Fit — The rigid steel shell provides a firm interference fit in the housing bore, resisting rotation and blowout under normal operating conditions without requiring adhesive or sealant.
📐Wide Metric Size Range — With ID options from 8mm to 45mm and OD up to 80mm, this listing covers a broad spectrum of metric TC oil seal sizes used in European and Asian-spec machinery, reducing the need to source from multiple suppliers.
🚚Ships from US Warehouse — Stocked domestically for faster delivery to US customers, avoiding the extended lead times typical of overseas-sourced replacement seals for agricultural and industrial equipment.

📐 Technical Specifications — TC Double-Lip Metric Oil Seal

Seal Type	TC (Double-Lip with Garter Spring)
Standard	Metric (ISO 6194 / DIN 3760 compatible)
Inner Diameter (ID) Range	8mm (≈5/16") – 45mm (≈1-3/4")
Outer Diameter (OD) Range	22mm (≈7/8") – 80mm (≈3-1/8")
Thickness Range	5mm – 12mm
Sealing Lip Material	Nitrile Rubber (NBR)
Outer Case Material	Carbon Steel
Spring Type	Garter Spring (primary lip)
Lip Configuration	Double-lip (primary sealing lip + dust exclusion lip)
Max Operating Temperature	Typically –40°F to +250°F (–40°C to +120°C) for NBR
Max Shaft Surface Speed	Typically up to 4–6 m/s (contact us for high-speed applications)
Fluid Compatibility	Petroleum oils, gear oil, ATF, grease (NBR standard)
Quantity per Order	1 Pcs (per variant selected)
Exact Dimensions	See variant options (ID × OD × Thickness in mm)

⚠️ Size Confirmation: Always verify your shaft diameter, bore diameter, and housing depth with calipers before ordering. Seal dimensions listed are nominal metric values. If you are unsure of your size, contact us to confirm before purchasing.

❓ Frequently Asked Questions

How do I choose the right TC oil seal size?

Measure the shaft diameter (ID), the bore diameter (OD), and the housing depth (thickness) with calipers. Match all three dimensions to the variant listed as ID × OD × Thickness. For example, a 20 × 40 × 7mm seal fits a 20mm shaft, a 40mm bore, and a 7mm-deep housing. If you only have inch measurements, multiply by 25.4 to convert to mm (e.g., 1 inch = 25.4mm, so a 1" shaft = 25.4mm ID).

What load or pressure can a TC oil seal handle?

TC-type oil seals are generally rated for low-to-moderate pressure applications — typically up to about 0.3 bar (4.4 psi) of dynamic pressure. They are designed for rotary shaft sealing rather than high-pressure containment. For higher-pressure environments, a mechanical seal or lip seal with a backup ring is generally recommended.

Can these TC oil seals be used outdoors or in wet environments?

The standard TC seal uses a nitrile rubber (NBR) lip, which generally handles water, mild oils, and common lubricants well. For prolonged outdoor exposure, UV, or aggressive chemicals, a Viton (FKM) variant is typically recommended. Contact us to confirm material compatibility for your specific application.

What shaft or bore standard do these metric seals fit?

These are metric TC oil seals sized in millimeters (ID × OD × Thickness), compatible with metric shafts following ISO 6194 / DIN 3760 standards. They press-fit into a machined bore — no thread engagement is involved. Verify your bore and shaft dimensions before ordering. They are not directly interchangeable with inch-sized seals without confirming equivalent metric dimensions.

What is the difference between a TC and a SC oil seal?

A TC seal has two sealing lips — a primary dynamic lip that contacts the shaft and a secondary dust-exclusion lip that faces outward to block contaminants. A SC seal has only one lip. TC seals are generally preferred for applications where dust, dirt, or moisture ingress is a concern, such as agricultural equipment, gearboxes, and wheel hubs.

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

Apply a thin film of clean oil or grease to the seal lip and the shaft before installation. Use a seal driver or a flat block to press the seal squarely into the bore — never hammer directly on the seal face. The seal should sit flush with or slightly below the housing surface. Avoid dragging the lip over sharp keyways or threads during installation.

What shaft speed can these oil seals handle?

Maximum shaft surface speed for standard NBR TC seals is typically up to about 4–6 m/s (roughly 800–1,200 RPM for a 40mm shaft), depending on lubrication and temperature. Higher speeds generally require PTFE-lip or hydrodynamic seal designs. Contact us to confirm suitability for high-speed applications.

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

TC Oil Seal Metric — Double-Lip Rotary Shaft Seal (ID 8–45mm)

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Description

TC Double-Lip Oil Seal — Metric Rotary Shaft Seal for Gearboxes, Pumps & Motors

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

📐 Technical Specifications — TC Double-Lip Metric Oil Seal

❓ Frequently Asked Questions

TC Oil Seal Metric — Double-Lip Rotary Shaft Seal (ID 8–45mm)

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