TC Double Lip NBR Rotary Shaft Oil Seal — 140mm to 400mm ID (FB / TG4 Type)
TC Double Lip NBR Rotary Shaft Oil Seal — 140mm to 400mm ID (FB / TG4 Type)
TC Double Lip NBR Rotary Shaft Oil Seal — 140mm to 400mm ID (FB / TG4 Type)
TC Double Lip NBR Rotary Shaft Oil Seal — 140mm to 400mm ID (FB / TG4 Type)
TC Double Lip NBR Rotary Shaft Oil Seal — 140mm to 400mm ID (FB / TG4 Type)
TC Double Lip NBR Rotary Shaft Oil Seal — 140mm to 400mm ID (FB / TG4 Type)
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TC Double Lip NBR Rotary Shaft Oil Seal — 140mm to 400mm ID (FB / TG4 Type)TC Double Lip NBR Rotary Shaft Oil Seal — 140mm to 400mm ID (FB / TG4 Type)TC Double Lip NBR Rotary Shaft Oil Seal — 140mm to 400mm ID (FB / TG4 Type)TC Double Lip NBR Rotary Shaft Oil Seal — 140mm to 400mm ID (FB / TG4 Type)TC Double Lip NBR Rotary Shaft Oil Seal — 140mm to 400mm ID (FB / TG4 Type)TC Double Lip NBR Rotary Shaft Oil Seal — 140mm to 400mm ID (FB / TG4 Type)

TC Double Lip NBR Rotary Shaft Oil Seal — 140mm to 400mm ID (FB / TG4 Type)

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Price:
$5.52 USD
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In stock (500 units), ready to be shipped

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Description

TC Double Lip NBR Rotary Shaft Oil Seal — Reliable Sealing from 140mm to 400mm ID

When a worn or incorrectly sized shaft seal lets oil leak past a bearing housing, the result is contaminated lubricant, accelerated wear, and unplanned downtime. Whether you are rebuilding a gearbox, replacing a pump seal, or servicing agricultural equipment, finding a correctly dimensioned TC double lip NBR rotary shaft oil seal in a large bore size should not require a special order or a long wait.

Each seal in this listing is a TC-type (FB / TG4 designation) double-lip rotary shaft oil seal made from NBR (Nitrile Butadiene Rubber) with a carbon steel outer case and an internal garter spring. Inner diameters range from 140mm (≈5.51") to 400mm (≈15.75"), with widths of 14mm (≈0.55") to 20mm (≈0.79"). Select your exact size — listed as ID × OD × Width in mm — and your preferred pack quantity (1, 5, or 10 pieces).

These seals are widely used in industrial gearboxes, agricultural tractor axles and PTO shafts, hydraulic pump housings, conveyor drive shafts, and heavy equipment final drives — anywhere a large-bore metric rotary shaft oil seal is required to retain lubricant and exclude contaminants.

ℹ️ Compatibility Note: Dimensions follow metric standards (mm). Always verify ID, OD, and width against your existing seal or housing drawing before ordering. Size format: ID × OD × Width.

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

  • 🔩TC Double-Lip Design (FB / TG4) — Primary spring-loaded sealing lip retains oil; secondary dust lip faces outward to block dirt, water, and debris from entering the bearing housing.
  • 🧲Garter Spring Retention — An internal garter spring maintains consistent radial lip pressure against the shaft, compensating for minor shaft runout and extending service life in rotary shaft oil seal applications.
  • 🛢️NBR Rubber Compound — Nitrile Butadiene Rubber offers broad compatibility with petroleum oils, gear oils, greases, and hydraulic fluids — the standard choice for industrial and agricultural shaft sealing.
  • 🏗️Carbon Steel Outer Case — The rigid metal outer shell provides a secure press-fit into the bore housing, resisting blowout under pressure and maintaining concentricity during operation.
  • 📐Wide Size Range — 140mm to 400mm ID — Covers large-bore metric shaft sizes commonly found in heavy industrial gearboxes, agricultural equipment axles, and conveyor drive systems, available in multiple OD and width combinations.
  • 📦Flexible Pack Quantities — Order 1 seal for a single repair, 5 for a maintenance kit, or 10 for workshop stock — all shipped from our US warehouse for fast domestic delivery.

📐 Technical Specifications — TC Double Lip Rotary Shaft Oil Seal

Seal Type TC (FB / TG4) — Double Lip with Garter Spring
Material — Lip NBR (Nitrile Butadiene Rubber)
Material — Case Carbon Steel
Inner Diameter (ID) Range 140mm (≈5.51") to 400mm (≈15.75")
Width Range 14mm (≈0.55") to 20mm (≈0.79")
Lip Configuration Primary sealing lip (oil side) + secondary dust exclusion lip
Spring Type Internal garter spring
Temperature Range (Typical) Typically -40°F to +250°F (-40°C to +120°C) for NBR
Fluid Compatibility (Typical) Petroleum oils, gear oils, greases, hydraulic fluids — see FAQ for exclusions
Dimension Format ID × OD × Width (mm) — select your size from the variant dropdown
Pack Size Options 1 piece / 5 pieces / 10 pieces
Installation Method Press-fit into bore housing; lip pre-lubricated before installation
Country of Origin See variant options
⚠️ Sizing Tip: The three numbers in each variant name represent Inner Diameter × Outer Diameter × Width in millimeters. If you are unsure of your OD, measure the bore housing diameter directly. Contact us to confirm fit if needed.

❓ Frequently Asked Questions

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

Measure three dimensions: the shaft inner diameter (ID), the bore housing outer diameter (OD), and the housing width. The variant names in this listing follow the format ID × OD × Width in mm. For example, 180 × 220 × 15mm fits a 180mm shaft, a 220mm bore, and a 15mm-wide housing. Always measure with calipers rather than relying on part numbers alone. As a reference, 25.4mm ≈ 1 inch, so a 180mm ID ≈ 7.09".

What does the "TC" designation mean on a rotary shaft oil seal?

TC (also referred to as FB or TG4 in various standards) indicates a double-lip seal with an internal garter spring. The primary lip is spring-loaded against the shaft to retain lubricant; the secondary lip faces outward to exclude dust and moisture. This is the most widely used metric rotary shaft oil seal type in industrial and agricultural machinery worldwide.

What fluids and temperatures can NBR oil seals handle?

NBR (Nitrile Butadiene Rubber) is generally compatible with petroleum-based oils, gear oils, greases, hydraulic fluids, and water-glycol mixtures. It typically performs well from approximately -40°F to +250°F (-40°C to +120°C). NBR is not recommended for use with brake fluids (DOT 3/4/5), ketones, esters, or strong acids. If your application involves these fluids, contact us to discuss alternative seal materials.

Can these seals be used outdoors or in wet environments?

NBR TC seals are generally suitable for outdoor use where exposure involves oil, grease, or water splash. The secondary dust lip provides meaningful protection against moisture and debris ingress. For continuous submersion or highly corrosive chemical environments, contact us to confirm suitability before ordering.

What shaft surface speed can TC rotary shaft oil seals handle?

TC oil seals with a garter spring are typically rated for shaft surface speeds up to approximately 4–6 m/s (800–1,200 ft/min), depending on shaft finish and lubrication. For best results, the shaft contact surface should have a ground finish (Ra ≤ 0.8 µm) and the seal lip should be lightly lubricated with the sealed fluid during installation.

Are these seals compatible with metric bore housings and inch-dimensioned equipment?

All dimensions are metric (mm). The outer diameter is designed for a press-fit into a standard metric bore housing. If your equipment uses inch-dimensioned bores, verify the OD conversion — for example, 220mm OD ≈ 8.66". Contact us if you need to confirm fit for a specific inch-dimensioned application.

How do I install a TC rotary shaft oil seal correctly?

1. Clean the bore housing and shaft contact surface thoroughly. 2. Lightly lubricate the seal lip with the fluid being sealed. 3. Press the seal squarely into the bore using a flat driver or dedicated seal installation tool — never strike the seal face directly with a hammer. 4. Ensure the primary lip faces the fluid (oil) side and the dust lip faces outward. 5. Check that the seal sits flush or slightly below the bore face.

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

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