TC Skeleton Oil Seals ID 16 17 18 19mm | NBR 70 Dual Lip Rotary Shaft Seal

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TC Skeleton Oil Seals ID 16 17 18 19mm | NBR 70 Dual Lip Rotary Shaft Seal

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Sizes (ID x OD x Thickness): 16*22*3mm

Packing QTY (Piece): 2 PCS

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TC Skeleton Oil Seals ID 16–19mm — Stop Leaks at the Source

If you've ever dealt with a weeping gearbox, a dripping pump shaft, or a motor that leaves an oil stain on the floor, you know how frustrating a failed shaft seal can be. Mechanics, equipment technicians, and serious DIYers working on small machinery need a reliable rotary shaft seal that installs cleanly and holds up under real operating conditions — not one that hardens, cracks, or leaks after a few months.

Each listing covers TC skeleton oil seals sold in a 2-piece pack. The seals are made from NBR 70 (Nitrile Butadiene Rubber, Shore A 70 hardness) bonded to a steel skeleton case. Inner diameters span 16mm, 17mm, 18mm, and 19mm; outer diameters range from 22mm to 52mm (≈0.87" to ≈2.05"); and thickness options run from 3mm to 10mm (≈0.12" to ≈0.39"). Select your exact ID × OD × Thickness combination from the variant dropdown above.

Typical use cases include replacing worn seals on small gearbox output shafts, sealing the drive shaft of a hydraulic pump, servicing electric motor end-bell bearings, and maintaining agricultural or power-tool equipment where shaft diameters fall in the 16–19mm range — all situations where a dual-lip TC seal for rotary shaft applications is the correct specification.

🔵 Compatibility Note: These seals fit shafts with inner diameters of 16mm, 17mm, 18mm, or 19mm. Always verify ID × OD × Thickness against your housing bore and shaft before ordering. Dimensions are listed in the variant selector as ID × OD × Thickness (mm).

✅ Key Features of These TC Skeleton Oil Seals

💧Dual-Lip TC Design — The primary lip retains lubricant on the fluid side while the secondary dust lip blocks contaminants from entering, making this a true dual lip rotary shaft seal for demanding environments.
🔩Steel Skeleton Reinforcement — A stamped steel inner case maintains dimensional stability under press-fit installation and prevents the seal from distorting in the housing bore over time.
🌡️NBR 70 Elastomer — Nitrile rubber at Shore A 70 hardness is the widely accepted standard for petroleum oil seal applications, offering a balance of flexibility and wear resistance across a broad temperature range.
📐Wide Size Selection — With ID options at 16, 17, 18, and 19mm and dozens of OD/thickness combinations, you can find the exact replacement seal for gearboxes, pumps, and motors without custom ordering.
⚙️Press-Fit Housing Interface — The outer diameter is sized for a controlled interference fit into standard machined bores, so the seal stays seated without adhesive under normal operating conditions.
📦2-Piece Pack — Each order ships as a 2-piece set, giving you a spare on hand for the next service interval or a second machine running the same seal size.

📐 Technical Specifications — TC Skeleton Oil Seal

Seal Type	TC (Double Lip with Dust Exclusion Lip)
Inner Diameter (ID)	16mm, 17mm, 18mm, or 19mm — see variant options
Outer Diameter (OD)	22mm – 52mm depending on selected variant
Thickness	3mm – 10mm depending on selected variant
Elastomer Material	NBR (Nitrile Butadiene Rubber)
Hardness	Shore A 70
Case / Skeleton	Steel (stamped)
Lip Configuration	Primary sealing lip + secondary dust/exclusion lip
Operating Temperature	Typically –40°F to +250°F (–40°C to +121°C)
Media Compatibility	Mineral oils, ATF, grease, hydraulic fluid (petroleum-based)
Max Shaft Speed	Typically up to 4–8 m/s (contact us to confirm for your application)
Max Pressure	Generally up to 0.3 bar (4.4 psi) — low-pressure rotary use
Quantity per Pack	2 PCS
Color / Finish	Black rubber body, bare steel case
Installation Method	Press-fit into housing bore
Country of Origin	See variant options / Contact us to confirm

⚠️ Sizing Tip: If you cannot read the markings on your old seal, measure the shaft OD (= seal ID), the housing bore ID (= seal OD), and the groove depth (= seal thickness) with calipers before selecting a variant.

❓ Frequently Asked Questions

How do I choose the right TC oil seal size?

Match the seal to your shaft's inner diameter (ID), housing bore outer diameter (OD), and groove depth (thickness). For example, a 16×28×7mm seal has a 16mm ID (≈0.63"), 28mm OD (≈1.10"), and 7mm thickness (≈0.28"). Always measure the existing seal or shaft housing with calipers before ordering. When in doubt, go by the shaft diameter first — the ID must match the shaft exactly.

What does NBR 70 mean for an oil seal?

NBR stands for Nitrile Butadiene Rubber, and "70" refers to Shore A hardness — a standard measure of rubber stiffness. Shore A 70 is the most common hardness for rotary shaft seals because it balances flexibility (for a good lip seal) with wear resistance. NBR generally performs well with petroleum-based oils, ATF, and greases across temperatures typically from –40°F to +250°F (–40°C to +121°C).

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

The dual-lip TC design includes a secondary exclusion lip that generally keeps water splash and dust from reaching the primary sealing lip, making it suitable for moderately wet or dusty outdoor conditions. For fully submerged applications or exposure to highly corrosive chemicals, confirm compatibility with your specific media before installation. NBR is not recommended for use with brake fluid or phosphate-ester hydraulic fluids.

What shaft speed and pressure can these seals handle?

TC-type rotary shaft seals are typically rated for low-to-moderate pressure — generally up to 0.3 bar (≈4.4 psi) — and shaft surface speeds up to approximately 4–8 m/s, depending on shaft finish, lubrication, and temperature. Higher speeds require a finer shaft surface finish (typically Ra 0.2–0.8 µm). Consult your equipment manual for exact requirements.

Are these seals compatible with synthetic oils and ATF?

NBR 70 is generally compatible with mineral-based motor oils, gear oils, ATF (automatic transmission fluid), and most petroleum-based hydraulic fluids. It is not recommended for use with DOT 4/5 brake fluid, phosphate-ester hydraulic fluids (e.g., Skydrol), ketone-based solvents, or highly aromatic fuels. When in doubt, verify chemical compatibility with an NBR compatibility chart before installation.

How do I install a TC skeleton oil seal correctly?

1. Clean the housing bore and shaft thoroughly. 2. Lightly lubricate the seal lip with the fluid being sealed (or clean grease). 3. Press the seal squarely into the bore using a seal driver or flat press — never hammer directly on the seal face. 4. Ensure the primary lip faces the fluid side (inward). 5. Protect the lip from sharp edges, keyways, or splines during installation using a thin sleeve or tape. 6. Press flush or to the depth specified by your equipment manual.

What equipment are these TC oil seals commonly used in?

These seals are commonly used in small gearboxes, electric motors, hydraulic pumps, agricultural equipment (tillers, mowers, seeders), power tools, compressors, and light automotive applications such as axle seals and transmission output shafts — wherever the shaft diameter falls in the 16–19mm range and a dual lip rotary shaft seal is specified.

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

TC Skeleton Oil Seals ID 16 17 18 19mm | NBR 70 Dual Lip Rotary Shaft Seal

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Beschreibung

TC Skeleton Oil Seals ID 16–19mm — Stop Leaks at the Source

✅ Key Features of These TC Skeleton Oil Seals

📐 Technical Specifications — TC Skeleton Oil Seal

❓ Frequently Asked Questions

TC Skeleton Oil Seals ID 16 17 18 19mm | NBR 70 Dual Lip Rotary Shaft Seal

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