TC Double Lip NBR Oil Seal — 83–94mm ID, R23 Rotary Shaft Seal, All Depths

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Beschreibung

TC Double Lip NBR Oil Seal — Stop Leaks on 83–94mm Rotary Shafts

When a worn or incorrect shaft seal lets oil seep past a gearbox, axle, or pump housing, the mess is the least of your problems — contaminated bearings and seized components follow quickly. Mechanics, equipment owners, and DIY rebuilders working on machinery with 83mm to 94mm shaft bores need a reliable TC double lip NBR oil seal that fits precisely and holds up under real operating conditions.

Each seal in this listing is a TC-type (R23 / TTO standard) double lip rotary shaft seal made from NBR (nitrile rubber) with a carbon steel outer case and a garter spring-loaded primary lip. Sizes span inner diameters from 83mm (≈3.27") to 94mm (≈3.70"), outer diameters from 95mm (≈3.74") to 180mm (≈7.09"), and depths from 6mm (≈0.24") to 24mm (≈0.94"). Select your exact Inner Ø × Outer Ø × Depth combination and packing quantity (1, 5, or 10 pieces) from the variant options above.

These TC oil seals are used across a wide range of applications: agricultural tractor PTO shafts and gearboxes, automotive rear axle and differential rebuilds, industrial pump and motor shaft sealing, and construction equipment drivetrain maintenance. The double lip design makes them especially well-suited for environments where both fluid retention and dust exclusion are required simultaneously.

🔵 Compatibility Note: These seals follow the TC / R23 / TTO dimensional standard. Always verify Inner Ø × Outer Ø × Depth against your housing before ordering. Dimensions are listed in millimeters; inch equivalents are provided in the FAQ below.
⚠️ Tip: If your shaft bore is borderline between two sizes, measure with calipers — do not estimate. A seal that is even 0.5mm too large or too small will not seal correctly.

✅ Key Features of These TC Double Lip NBR Oil Seals

  • 🔩Double Lip TC Design — The primary garter spring-loaded lip retains oil and grease while the secondary dust lip blocks dirt, debris, and moisture from entering the bearing cavity — a critical advantage in agricultural and outdoor equipment applications.
  • 🧪NBR Nitrile Rubber Construction — Nitrile rubber provides solid resistance to petroleum-based oils, gear lubricants, hydraulic fluids, and water, making these seals suitable for gearbox, axle, and pump shaft sealing in most standard operating environments.
  • 📐Wide Size Range in One Listing — Inner diameters from 83mm to 94mm with dozens of outer diameter and depth combinations let you find the exact rotary shaft seal size for your specific housing without sourcing from multiple suppliers.
  • 🌡️Broad Temperature Tolerance — Rated for continuous use from approximately -40°F to +250°F (-40°C to +120°C), covering the typical operating range of automotive differentials, tractor gearboxes, and industrial rotating equipment.
  • 🏗️Carbon Steel Outer Case — The rigid metal outer shell provides a firm press-fit into the housing bore, resisting blowout under normal operating pressures and maintaining concentricity with the shaft during rotation.
  • 📦Flexible Pack Quantities — Available in packs of 1, 5, or 10 pieces. Single-piece packs suit one-off repairs; multi-packs are cost-effective for fleet maintenance, workshop stock, or rebuilding multiple units at once.

📐 Technical Specifications — TC Double Lip Rotary Shaft Oil Seal

Seal Type TC / R23 / TTO — Double Lip with Garter Spring
Inner Diameter (ID) Range 83mm – 94mm (≈3.27" – 3.70")
Outer Diameter (OD) Range 95mm – 180mm (≈3.74" – 7.09")
Depth Range 6mm – 24mm (≈0.24" – 0.94")
Lip Material NBR (Nitrile Butadiene Rubber)
Case Material Carbon Steel
Spring Type Garter Spring (primary lip)
Number of Lips 2 (primary sealing lip + secondary dust lip)
Operating Temperature Typically -40°F to +250°F (-40°C to +120°C)
Max Dynamic Pressure Typically up to 0.3 bar (4.4 psi) — low-to-medium pressure rotary applications
Compatible Fluids Petroleum oils, gear oils, hydraulic fluids, greases, water
Packing Quantity See variant options (1 pc / 5 pcs / 10 pcs)
Exact Dimensions See variant options (Inner Ø × Outer Ø × Depth in mm)
Country of Origin Contact us to confirm

❓ Frequently Asked Questions

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

Measure three dimensions with calipers: the shaft diameter (this becomes the Inner Ø), the housing bore diameter (Outer Ø), and the housing depth. Match all three to the variant listed. For example, a 90 × 110 × 10mm seal fits a 90mm shaft (≈3.54"), a 110mm bore (≈4.33"), and a 10mm deep housing (≈0.394"). If your existing seal is still intact, the dimensions are typically stamped or molded on the outer face.

What does TC, R23, or TTO mean on an oil seal?

TC, R23, and TTO all refer to the same double-lip rotary shaft seal design with a garter spring. The primary lip (spring-loaded) retains lubricant; the secondary lip acts as a dust excluder. This is the most widely used seal type in automotive axles, agricultural gearboxes, and industrial rotating equipment worldwide.

What is the pressure and load rating for these seals?

TC-type NBR oil seals are generally designed for low-to-medium pressure rotary applications — typically up to 0.3 bar (≈4.4 psi) dynamic pressure. They are not intended for high-pressure hydraulic containment. For applications with higher shaft speeds or pressures, consult your equipment's service manual for the correct seal specification.

Can I use these seals outdoors or in wet conditions?

NBR nitrile rubber offers good resistance to water, oil, and mild weather exposure, making these seals generally suitable for outdoor equipment such as agricultural tractors, trailers, and garden machinery. For applications with prolonged UV, ozone, or extreme chemical exposure, a Viton (FKM) seal is typically recommended instead.

What fluids are compatible with NBR oil seals?

NBR is compatible with petroleum-based engine oils, gear oils, hydraulic fluids (mineral-based), greases, and water. It is generally not recommended for use with DOT 4/5 brake fluid, phosphate ester hydraulic fluids, or aromatic/chlorinated solvents. When in doubt, verify fluid compatibility before installation.

How do I install a TC oil seal without damaging the lip?

Lightly coat the seal lip with clean oil or grease before installation. Use a seal driver or a flat wooden block to press the seal in squarely and evenly — never strike the seal face directly with a hammer. Ensure the shaft surface is smooth and free of burrs or sharp edges. The seal should sit flush with or slightly below the housing face. Protect the seal lip from sharp shaft keyways or splines during installation using a sleeve or tape.

What is the operating temperature range for NBR oil seals?

NBR oil seals typically perform reliably from approximately -40°F to +250°F (-40°C to +120°C). Continuous operation near the upper temperature limit may accelerate lip wear over time. For high-temperature environments above 250°F — such as near exhaust components or high-speed industrial spindles — a Viton or silicone seal is generally more appropriate.

🛒 Select your size (Inner Ø × Outer Ø × Depth) and pack quantity above, then add to cart — ships from our US warehouse.

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