Double Lip TC NBR Oil Seals — 52–55mm ID Rotary Shaft Seals for Automotive & Industrial Use
When a leaking shaft seal causes oil loss, contamination, or bearing failure, finding the exact replacement quickly matters. These double lip TC NBR oil seals cover inner diameters of 52mm, 53mm, 54mm, and 55mm — a range that spans dozens of common automotive differentials, gearboxes, axles, agricultural PTO shafts, and industrial gearheads. Whether you're a mechanic doing a rear axle rebuild or a maintenance tech replacing a worn pump seal, this listing gives you the specific size you need without ordering a full assortment kit.
Each seal follows the R23 / TC / TTO double-lip standard. The body is constructed from NBR (Nitrile Butadiene Rubber) bonded to a steel case, with a garter spring-loaded primary sealing lip and a secondary dust exclusion lip. Inner diameters run from 52mm to 55mm (≈2.047" to ≈2.165"), outer diameters from 60mm to 120mm (≈2.362" to ≈4.724"), and depths from 4.7mm to 15mm (≈0.185" to ≈0.591"). Packs are available in quantities of 5 or 10 pieces depending on the size selected.
Typical applications include rear axle shaft seals on light trucks and SUVs, manual transmission output shaft seals, agricultural tractor PTO and gearbox seals, hydraulic pump shaft seals, and industrial conveyor or gearhead shaft seals where a double lip rotary shaft seal with NBR compound is specified.
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Compatibility: Fits shafts with 52mm, 52.5mm, 53mm, 53.97mm, 54mm, or 55mm inner diameter. Confirm all three dimensions — Inner Ø, Outer Ø, and Depth — before ordering. Dimensions are in millimeters. NBR compound is compatible with mineral oil, gear oil, ATF, and most hydraulic fluids up to approximately 120°C (248°F).
✅ Key Features of These Double Lip TC NBR Rotary Shaft Oil Seals
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Double Lip TC Design (R23 / TTO) — The spring-loaded primary lip retains oil or grease under the seal, while the secondary dust lip generally blocks dirt, water, and debris from reaching the bearing — the standard configuration for automotive axle and gearbox shaft seals.
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Garter Spring-Loaded Primary Lip — A stainless steel garter spring maintains consistent radial lip pressure against the rotating shaft, compensating for minor shaft runout and lip wear over time — a key factor in long-term seal life on rotary shaft applications.
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NBR Elastomer — Broad Fluid Compatibility — Nitrile rubber is generally resistant to mineral oils, gear oils, automatic transmission fluid, and most petroleum-based hydraulic fluids, making these seals suitable for the majority of automotive and industrial lubrication systems.
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Steel-Cased Body for Secure Press Fit — The rigid steel outer case is designed to press into the housing bore and remain stationary during shaft rotation, preventing the seal from spinning or walking out — critical for reliable sealing in high-vibration environments.
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245+ Size Variants in One Listing — Inner diameters from 52mm to 55mm, outer diameters from 60mm to 120mm, and depths from 4.7mm to 15mm cover a wide range of OEM replacement needs without requiring separate searches for each size.
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Flexible Pack Quantities (5 or 10 pcs) — Order a 5-piece pack for a single repair job or a 10-piece pack for workshop stock. Pricing is per pack, making it straightforward to stock the sizes you use most often.
📐 Technical Specifications — Double Lip TC NBR Rotary Shaft Oil Seal
| Seal Type |
TC / TTO / R23 — Double Lip Rotary Shaft Seal |
| Inner Diameter (ID) |
52mm, 52.5mm, 53mm, 53.97mm, 54mm, 55mm (≈2.047"–2.165") |
| Outer Diameter (OD) |
60mm–120mm (≈2.362"–4.724") — see variant options |
| Depth (Width) |
4.7mm–15mm (≈0.185"–0.591") — see variant options |
| Elastomer / Compound |
NBR (Nitrile Butadiene Rubber) |
| Case Material |
Steel (carbon steel outer case) |
| Spring Type |
Garter spring (stainless steel, typically) |
| Lip Configuration |
Double lip — primary sealing lip + secondary dust exclusion lip |
| Temperature Range |
Typically −40°C to +120°C (−40°F to +248°F) for NBR |
| Max Shaft Speed |
Typically up to 4–6 m/s (contact us to confirm for your application) |
| Pressure Rating |
Low pressure — generally up to 0.05 MPa (7 psi) |
| Fluid Compatibility |
Mineral oil, gear oil, ATF, most petroleum-based hydraulic fluids |
| Pack Quantity |
5 pcs or 10 pcs per pack (see variant options) |
| Standard / Cross-Reference |
R23, TC, TTO (DIN 3760 Type AS equivalent) |
| Finish |
See variant options |
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Sizing note: Always measure your existing seal or housing bore before ordering. The three dimensions — Inner Ø (shaft size), Outer Ø (bore size), and Depth — must all match. If your seal uses inch dimensions, divide by 25.4 to convert to mm, then select the closest matching variant.
❓ Frequently Asked Questions
How do I choose the right size oil seal?
Measure three dimensions: the shaft diameter (Inner Ø), the housing bore diameter (Outer Ø), and the housing depth. All three must match the seal. For example, a 52mm shaft in a 68mm bore with 8mm depth = select variant "52 x 68 x 8". If you only have the old seal, measure it directly with calipers. Dimensions are in millimeters.
How do I convert these millimeter sizes to inches?
Divide mm by 25.4. Common conversions: 52mm ≈ 2.047" (≈ 2-1/16"), 53mm ≈ 2.087", 54mm ≈ 2.126", 55mm ≈ 2.165" (≈ 2-3/16"). For outer diameters: 68mm ≈ 2.677", 75mm ≈ 2.953", 90mm ≈ 3.543". One variant — 53.97 x 76.2 x 12.7mm — corresponds exactly to 2.125" x 3.000" x 0.500". Always measure in metric for the most accurate fit.
What does TC, TTO, or R23 mean on an oil seal?
These are all designations for the same double-lip rotary shaft seal design. "TC" is the most common trade abbreviation; "R23" is the ISO/DIN cross-reference (equivalent to DIN 3760 Type AS); "TTO" is another trade name used by some manufacturers. All refer to a seal with a spring-loaded primary lip and a secondary dust exclusion lip, bonded to a steel outer case.
Is NBR rubber compatible with my oil or fluid?
NBR is generally compatible with mineral engine oils, gear oils, automatic transmission fluid (ATF), power steering fluid, and most petroleum-based hydraulic fluids. It is typically not recommended for synthetic esters (PAO/ester-based), biodegradable hydraulic oils, brake fluid, or fuel. For those applications, an FKM (Viton) seal is generally more appropriate. If in doubt, contact us to confirm.
Can I use these seals on outdoor or agricultural equipment?
Yes. The double-lip TC design includes a secondary lip that generally excludes dust, mud, and light water ingress, making it suitable for agricultural tractors, PTO shafts, gearboxes, and outdoor machinery. NBR also has good resistance to ozone and weathering for typical outdoor use. For fully submerged or high-pressure wash-down environments, confirm the specific seal rating before installation.
What shaft speed and pressure can these seals handle?
TC-type NBR oil seals are typically rated for shaft surface speeds up to approximately 4–6 m/s and low-pressure applications (generally up to 0.05 MPa / 7 psi static). Actual limits depend on the specific size, shaft finish, and lubrication conditions. For high-speed spindles or pressurized housings, contact us to confirm suitability before ordering.
How do I install a TC oil seal correctly?
Clean the housing bore and shaft. Lightly lubricate the seal lip with the fluid it will be sealing. Press the seal squarely into the bore using a seal driver or a flat block — never hammer directly on the seal face. The seal should sit flush with or slightly below the housing face. Protect the seal lip from sharp shaft edges or keyways during installation using a sleeve or tape.
Are these seals sold individually or in packs?
These seals are sold in packs of 5 or 10 pieces, depending on the size selected. The pack quantity is shown as the second variant option ("Packing Quantity"). The listed price is per pack. If you need a single seal, select the 5-piece pack as the smallest available quantity for most sizes.
🛒 Select your size (Inner Ø × Outer Ø × Depth) and pack quantity above, then add to cart — ships from our US warehouse.
