TC Oil Seal 35mm ID | NBR Rotary Shaft Seal | OD 42–52mm | R23 Double Lip

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TC Oil Seal 35mm ID | NBR Rotary Shaft Seal | OD 42–52mm | R23 Double Lip

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Size(ID x OD x Height): 35 x 42 x 4mm

Pack Quantity(Pcs): 2

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$2.84 USD

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TC Double-Lip NBR Oil Seal 35mm ID — Stop Leaks & Block Contaminants

When a worn or incorrectly sized rotary shaft seal lets oil weep past the bearing housing, the result is messy, costly, and potentially damaging to surrounding components. Mechanics, equipment technicians, and serious DIYers who work on gearboxes, pumps, axles, and agricultural machinery need a seal they can trust to stay put and stay sealed.

This TC double-lip NBR rotary shaft oil seal has a fixed inner diameter of 35mm (≈1.378″) and is available in outer diameters from 42mm to 52mm and heights (widths) from 4mm to 12mm — covering a wide range of housing bores. The seal body is constructed from nitrile rubber (NBR) bonded to a steel reinforcing ring, with a garter spring behind the primary lip to maintain consistent radial load. Pack quantities of 2, 3, 5, 8, 10, or 25 pieces let you stock exactly what you need.

Typical applications include gearbox output shaft sealing, hydraulic pump shaft seals, agricultural equipment axle seals, electric motor shaft seals, and general-purpose rotary shaft oil retention wherever a 35mm shaft runs through a metric housing bore between 42mm and 52mm.

🔵 Compatibility: Fits 35mm metric shafts. Follows ISO 6194 / DIN 3760 R23 (TC) profile. Select the OD and height variant to match your housing bore and groove depth. Confirm dimensions against your original seal before ordering.

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

🛡️Dual-Lip TC Design — The R23 TC lip arrangement combines a primary oil-retention lip with a secondary dust-exclusion lip, providing two-stage protection against both lubricant loss and ingress of dirt, water, and debris.
🔩Garter Spring Loaded — An internal garter spring maintains consistent radial contact force on the shaft surface, compensating for minor shaft runout and lip wear over time to extend service life.
🧪NBR Rubber Construction — Nitrile rubber resists petroleum-based oils, greases, and water splash across a typical operating range of -40°F to +250°F (-40°C to +120°C), making it suitable for most gearbox and pump shaft sealing applications.
⚙️Steel-Reinforced Body — A pressed steel insert bonded into the rubber outer casing provides dimensional stability during press-fit installation and prevents the seal from distorting under housing bore pressure.
📐Wide Size Range in One Listing — With ODs from 42mm to 52mm and heights from 4mm to 12mm, this listing covers dozens of housing configurations for a 35mm shaft — reducing the need to source multiple part numbers.
📦Flexible Pack Quantities — Available in packs of 2, 3, 5, 8, 10, or 25 pieces. Bulk packs lower the per-unit cost and are practical for fleet maintenance, workshop stock, or multi-point seal replacement jobs.

📐 Technical Specifications — TC NBR Rotary Shaft Oil Seal

Seal Type	TC (R23) — Double Lip with Garter Spring
Standard	ISO 6194 / DIN 3760 R23
Inner Diameter (ID)	35mm (≈1.378″)
Outer Diameter (OD)	42mm – 52mm (≈1.654″ – 2.047″) — see variant options
Height (Width)	4mm – 12mm (≈0.157″ – 0.472″) — see variant options
Seal Material	NBR (Nitrile Butadiene Rubber)
Reinforcement	Steel insert (bonded)
Spring Type	Garter spring (internal)
Operating Temperature	Typically -40°F to +250°F (-40°C to +120°C)
Media Compatibility	Petroleum oils, greases, water splash (not suitable for brake fluid or phosphate-ester fluids)
Shaft Surface Speed	Typically up to 4–6 m/s under lubricated conditions
Installation Method	Press-fit into housing bore
Pack Quantity	2 / 3 / 5 / 8 / 10 / 25 pcs — see variant options
Country of Origin	China

⚠️ Size Confirmation: Always verify the ID, OD, and height of your original seal before ordering. Dimensions are stamped on most OEM seals or listed in your equipment's service manual. If you cannot confirm the OD or height, contact us with your equipment make/model and we will help identify the correct variant.

❓ Frequently Asked Questions

How do I choose the right oil seal size?

Measure three dimensions: the shaft diameter (= inner diameter, fixed at 35mm / ≈1.378″ for this product), the housing bore diameter (= outer diameter, choose from 42–52mm), and the housing groove depth (= height, choose from 4–12mm). All three must match your application. If the original seal is still accessible, the dimensions are typically molded or stamped on the outer face.

What does TC lip arrangement mean?

TC (also called R23 or double-lip) seals have two sealing lips: a primary lip that retains lubricant on the inboard side and a secondary dust lip that blocks contaminants from entering on the outboard side. This dual-lip design generally provides better protection than single-lip (SC/R21) seals in environments with dirt, moisture, or debris.

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

NBR is generally resistant to petroleum-based oils, greases, and water splash, making it suitable for most outdoor mechanical applications. However, NBR is not recommended for use with brake fluid, phosphate-ester hydraulic fluids, or prolonged ozone exposure. For those media, consider FKM (Viton) seals instead.

What is the operating temperature range?

NBR oil seals of this type typically operate between -40°F and +250°F (-40°C to +120°C). Continuous operation near the upper limit may accelerate lip wear. Confirm your application's peak temperature before ordering, especially in high-cycle or high-ambient-temperature environments.

What shaft speed can these seals handle?

Rotary shaft oil seals of this type generally support shaft surface speeds up to approximately 4–6 m/s (800–1,200 ft/min) under normal lubricated conditions. Actual limits depend on shaft surface finish (Ra ≤ 0.2–0.8 µm is typically recommended), shaft runout, and operating temperature. Contact us to confirm suitability for high-speed applications.

Are these seals compatible with metric shafts and housings?

Yes. All dimensions are metric (mm). The 35mm inner diameter fits a 35mm metric shaft. Select the OD and height variant that matches your housing bore and groove depth. These seals follow the ISO 6194 / DIN 3760 R23 standard profile, which is widely used in European and Asian machinery.

How many seals come in each pack, and which quantity should I order?

Pack quantities available are 2, 3, 5, 8, 10, or 25 pieces (availability varies by size variant). For a single repair, a 2-pack gives you one spare. For workshop stock or fleet maintenance, the 10- or 25-pack offers a lower per-piece cost. Larger packs are also practical when replacing seals at multiple points on the same machine.

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

TC Oil Seal 35mm ID | NBR Rotary Shaft Seal | OD 42–52mm | R23 Double Lip

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Description

TC Double-Lip NBR Oil Seal 35mm ID — Stop Leaks & Block Contaminants

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

📐 Technical Specifications — TC NBR Rotary Shaft Oil Seal

❓ Frequently Asked Questions

TC Oil Seal 35mm ID | NBR Rotary Shaft Seal | OD 42–52mm | R23 Double Lip

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