101518TC Type TC Nitrile Oil Seal

1" Shaft OD X 1.5" Bore ID X 0.187" Seal Width - Type TC Oil Seal Radial Shaft Seal | WAS Profile

DIN 3760 Standard | Rubber-Covered OD | Double Lip with Spring

Radial Shaft Seal | WAS Profile
Seal Style: TC Type
Lip Design: Double lip with garter spring
O.D. Style: WAS
Material: 70 NBR (Nitrile) 
 

Dimensions

• Shaft Diameter (ID): 1.000 in / 25.40 mm
• Bore Diameter (OD): 1.500 in / 38.10 mm
• Width: 0.187 in / 4.80 mm

What this means for you

• TC design gives you a primary sealing lip plus a dust lip, helping keep oil in and contamination out.
• Nitrile 70A (NBR) is the industry workhorse for mineral oils and greases, offering good wear life at a reasonable cost.
• Garter spring maintains consistent sealing force, even as conditions change over time.
• WAS profile is a common interchange style, making this a reliable replacement for many OEM and aftermarket applications.

Typical applications

• Gearboxes
• Pumps
• Small motors
• Agricultural and light industrial equipment

If you’d like, we can also:

• Confirm shaft and bore surface finish recommendations
• Check rotational speed and temperature limits for your application
• Cross this to an alternate brand or upgrade it to FKM if heat or chemicals are a concern

That’s part of how we make getting O-Rings and seals easy and help you avoid repeat repairs.

Key Design Features and Benefits

Engineered for Real-World Installations

• Rubber-covered outer diameter (OD)
  Ensures a tight, leak-resistant seal in the housing bore, even with:
  • Rougher surface finishes
  • Light-metal housings
  • Split housings
  • Thermal expansion and contraction
• Spring-loaded primary sealing lip
  Maintains consistent radial load on the shaft for dependable sealing across varying speeds and temperatures.
• Integrated protective dust lip
  Shields the primary lip from moderate dust and dirt contamination coming from the air side, extending seal life.

Functional Performance

• Dynamic sealing of rotating shafts, independent of rotation direction
• Excellent static sealing performance at standstill, including with low-viscosity or gaseous media
• Designed for moderately demanding industrial environments, where reliability matters but extreme pressure sealing is not required

Material Options and Media Compatibility

NBR (Nitrile Rubber)

Best choice for standard industrial oil and grease applications.

• Operating temperature:
  -40°C to +80°C (short-term up to +100°C)
• Compatible with:
  • Mineral oils and greases (H, HL, HLP)
  • Flame-retardant hydraulic fluids HFA, HFB, HFC (up to approx. +50°C)
  • Water (up to +60°C)
• Note: Limited resistance to ozone, weathering, and aging

Operating Limits (Design Envelope)

• Maximum pressure: 0.05 MPa
• Maximum peripheral speed: 8 m/s

Note: These are maximum values and may not be reached simultaneously. Proper application evaluation is recommended.

Typical Applications

• Electric motors
• Gearboxes
• Pumps
• Industrial machinery
• Shafts, hubs, and axles in general industry

This seal is well suited for maintenance, repair, and OEM replacement where consistent sealing and ease of installation are critical.

Installation and Design Guidance (Summary)

Designed to DIN 3760 installation standards:

• Shaft:
  • Hardness ≥ 45 HRC
  • Surface roughness Rz 1.0–4.0 µm
  • Tolerance ISO h11
• Housing:
  • Surface roughness Rz 10–20 µm
  • Tolerance ISO H8

Installation best practices:

• Do not grease the seal or bore during installation
• Avoid sharp edges or threads; use an installation sleeve if needed
• Install square to the shaft; tilting is not permitted

Why Customers Choose the WAS Seal

• Forgiving design that seals well even when housings are less than perfect
• Long service life with low maintenance risk
• Broad interchangeability with common DIN and industry-standard oil seals
• Strong price-to-performance ratio from a globally trusted manufacturer