FKM TC Oil Seal Double Lip Rotary Shaft Seal – ID 5–10mm, Dust & Oil Proof

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FKM TC Oil Seal Double Lip Rotary Shaft Seal – ID 5–10mm, Dust & Oil Proof

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Size (ID x OD x Thickness): 5*10*4mm

Amount: 1 pcs

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FKM TC Oil Seal — Double Lip Rotary Shaft Seal That Keeps Oil In and Contaminants Out

If you've dealt with a leaking gearbox, a weeping pump shaft, or a dusty bearing housing that keeps failing prematurely, you already know how much a worn or wrong-spec oil seal costs in downtime and cleanup. These FKM TC rotary shaft oil seals are built for mechanics, equipment technicians, and serious DIYers who need a reliable, heat-resistant seal the first time — not a temporary fix.

Each seal is a TC (double-contact) design made from FKM (fluoroelastomer / Viton-type) rubber with a carbon steel outer case. The double lip configuration includes a primary oil-retention lip loaded by an internal garter spring and a secondary dust-exclusion lip. Inner diameters range from 5mm (≈3/16") to 10mm (≈3/8"), outer diameters from 10mm (≈3/8") to 30mm (≈1-3/16"), and thicknesses from 3mm (≈1/8") to 10mm (≈3/8"). Available in 1, 5, or 20-piece quantities across 72 size combinations.

Typical applications include small engine crankshaft seals, hydraulic cylinder rod seals, gearbox output shaft seals, agricultural equipment pivot seals, and precision machine tool spindle seals — anywhere a double lip rotary shaft seal with oil and dust resistance is required.

ℹ️ Compatibility Note: These seals follow metric TC dimensions (ID × OD × Thickness in mm). Before ordering, measure your shaft OD (= seal ID), housing bore ID (= seal OD), and housing depth (= seal thickness) with calipers. Imperial equivalents are shown in the spec table below for reference.

✅ Key Features of These FKM TC Double Lip Oil Seals

🌡️FKM Fluoroelastomer Lip — Withstands continuous temperatures typically up to 200°C (392°F), outperforming standard NBR seals in high-heat environments such as engine bays and hydraulic systems.
💧Double Lip TC Design — Primary spring-loaded lip retains oil; secondary lip blocks dust, dirt, and moisture — ideal for double lip rotary shaft seal applications in contaminated environments.
🔩Internal Garter Spring — Maintains consistent radial sealing pressure on the shaft throughout the seal's service life, compensating for minor shaft runout and lip wear.
🛡️Carbon Steel Outer Case — Provides a firm press-fit into the housing bore, resisting rotation and maintaining concentricity under vibration and thermal cycling.
📐72 Metric Size Options — ID 5–10mm, OD 10–30mm, thickness 3–10mm; covers a wide range of small-shaft applications without needing custom seals or adapters.
⚗️Broad Chemical Resistance — FKM material is generally compatible with petroleum oils, synthetic lubricants, hydraulic fluids, and fuels — suitable for demanding fluid-contact environments where NBR would degrade.

📐 Technical Specifications — FKM TC Double Lip Rotary Shaft Oil Seal

Seal Type	TC (Double Lip with Garter Spring)
Lip Material	FKM (Fluoroelastomer / Viton-type)
Outer Case Material	Carbon Steel
Inner Diameter (ID) Range	5mm–10mm (≈3/16"–3/8")
Outer Diameter (OD) Range	10mm–30mm (≈3/8"–1-3/16")
Thickness Range	3mm–10mm (≈1/8"–3/8")
Available Sizes	72 combinations — see variant selector
Quantity Options	1 pcs / 5 pcs / 20 pcs
Operating Temperature	Typically -20°C to +200°C (-4°F to +392°F)
Fluid Compatibility	Petroleum oils, synthetic oils, hydraulic fluids, fuels (verify for ketones/esters)
Shaft Surface Speed	Typically up to 4–8 m/s (contact us to confirm for high-speed use)
Finish / Color	Black rubber lip, metallic steel case
Standard	Metric TC dimensional standard
Country of Origin	See variant options

⚠️ Size Confirmation: Seal dimensions are listed as ID × OD × Thickness (mm). If you are unsure of your required size, measure the existing seal or the shaft and housing bore directly before ordering. Contact us if you need help matching a part number.

❓ 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. The ID must match your shaft exactly — typically within ±0.1mm. If you're replacing an existing seal, check the part number or measure the old seal directly. Our size format is ID × OD × Thickness in mm (e.g., 8×20×7mm ≈ 5/16" × 25/32" × 9/32").

What is the difference between a TC oil seal and other seal types?

A TC seal features two sealing lips — a primary lip that retains oil and a secondary dust lip that blocks contaminants from entering. The internal garter spring keeps constant radial pressure on the shaft. This double-lip design generally provides better protection than single-lip (SC) seals in environments with both oil and dust exposure.

What temperature range can FKM oil seals handle?

FKM (Viton) seals typically withstand continuous operating temperatures from approximately -20°C (-4°F) to +200°C (+392°F), making them suitable for high-heat applications such as engine compartments, hydraulic systems, and industrial machinery. For cryogenic or extreme cold environments, consider NBR or PTFE alternatives.

Are these oil seals suitable for outdoor or wet environments?

Yes. FKM material generally offers good resistance to weathering, UV exposure, and moisture. The secondary dust lip provides an additional barrier against water ingress. However, for fully submerged or high-pressure water applications, confirm the specific pressure rating with us before ordering.

What fluids are compatible with FKM TC oil seals?

FKM seals are generally compatible with petroleum-based oils, synthetic oils, hydraulic fluids, fuels, and many aggressive chemicals. They typically outperform NBR seals in contact with aromatic hydrocarbons and halogenated solvents. Avoid prolonged contact with ketones, esters, and certain amines without verifying compatibility.

How do I install a TC rotary shaft seal correctly?

Clean the housing bore and shaft. Lightly lubricate the seal lip with the fluid it will retain. Press the seal squarely into the bore using a seal driver or a flat block — never hammer directly on the seal face. The seal lip should face toward the fluid being retained. Avoid nicking the lip on keyways or splines during installation.

Can I use these seals on high-speed rotating shafts?

TC oil seals are designed for rotary shaft applications. Acceptable shaft surface speed depends on the seal size and lubricant — in most cases, FKM lip seals perform well up to approximately 4–8 m/s shaft surface speed. For very high-speed applications, confirm the specific speed rating or consider a PTFE-lip variant.

🛒 Select your size and quantity above, then add to cart — ships from our US warehouse.

FKM TC Oil Seal Double Lip Rotary Shaft Seal – ID 5–10mm, Dust & Oil Proof

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Description

FKM TC Oil Seal — Double Lip Rotary Shaft Seal That Keeps Oil In and Contaminants Out

✅ Key Features of These FKM TC Double Lip Oil Seals

📐 Technical Specifications — FKM TC Double Lip Rotary Shaft Oil Seal

❓ Frequently Asked Questions

FKM TC Oil Seal Double Lip Rotary Shaft Seal – ID 5–10mm, Dust & Oil Proof

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