The CR Oil Seal 7.250x8.756x0.625 TCN NBR is engineered for large rotary shaft applications requiring dependable retention of oil or compatible grease around an industrial shaft assembly.

Installed between the rotating shaft and stationary housing, the seal creates controlled radial contact with the shaft surface. This helps reduce lubricant leakage while limiting the entry of dust, dirt, moisture, and abrasive contaminants into the bearing, gearbox, or transmission assembly.

The product is identified by the CR or Chicago Rawhide manufacturer designation TCN. Because industrial seal profile codes are manufacturer-specific, the exact sealing-lip geometry, outside-diameter construction, spring arrangement, pressure capability, and installation direction should be compared with the original seal or technical drawing before replacement.

Manufactured from NBR (Nitrile Butadiene Rubber), the sealing element is generally compatible with:

Mineral oils

Gear oils

Hydraulic oils

Bearing grease

Petroleum-based lubricants

General industrial lubricating fluids

NBR provides good resistance to oil, wear, and abrasion under standard industrial operating conditions. Suitability should be confirmed before use with aggressive chemicals, high continuous temperatures, ozone-rich environments, or specialized synthetic lubricants.

The inch dimensions correspond approximately to:

Shaft diameter: 7.250 inches or 184.15 mm

Housing diameter: 8.756 inches or 222.40 mm

Seal width: 0.625 inch or 15.88 mm

The specific shaft and housing dimensions suggest that this seal may be intended for a dedicated OEM bearing housing, gearbox, transmission, axle, or heavy industrial machine assembly. Accurate dimensional measurement and TCN profile verification are essential before installation.

⚙️ Applications

Large industrial gearboxes

Bearing housings

Industrial pumps

Mechanical transmissions

Power transmission systems

Agricultural machinery

Construction equipment

Mining machinery

Conveyor drive assemblies

OEM rotating machinery

🎯 Benefits

✔ Helps retain oil or compatible grease

✔ Protects bearings and rotating components

✔ Oil-resistant NBR sealing material

✔ Suitable for large inch-size shaft assemblies

✔ Designed for heavy industrial rotary applications

✔ Good resistance to wear and abrasion

✔ Suitable for maintenance and overhaul work

✔ Supports longer bearing service life

✔ OEM replacement ready when dimensions and profile match

🧠 Technical Insight

CR TCN Seal Reference

Large Inch-Size Rotary Shaft Seal

NBR Sealing Material

Radial Shaft-Sealing Function

Lubricant Retention Design

Heavy Industrial Bearing Application

Approximately 184.15 mm Shaft Diameter

TCN Profile Verification Required Before Installation

✅ Key Features

CR / Chicago Rawhide Seal

TCN Profile Reference

Heavy-Duty Rotary Shaft Construction

Oil-Resistant NBR Material

Large Inch-Size Dimensions

Suitable for Compatible Oil and Grease

Industrial Replacement Seal

OEM Cross-Reference Ready

📊 Specifications

Brand: CR / Chicago Rawhide

Model: TCN

Size: 7.250 × 8.756 × 0.625 inch

Metric Equivalent: Approximately 184.15 × 222.40 × 15.88 mm

Type: Heavy-Duty Industrial Rotary Shaft Oil Seal

Material: NBR (Nitrile Butadiene Rubber)

Profile: TCN

Construction: Manufacturer-Specific Reinforced Shaft-Seal Construction

Lip Design: TCN profile; verify against the original seal

Dust Lip: Verify from the actual TCN cross-section

Spring Type: Verify from the actual seal construction

Shaft Diameter (ID): 7.250 inches / approximately 184.15 mm

Housing Diameter (OD): 8.756 inches / approximately 222.40 mm

Width: 0.625 inch / approximately 15.88 mm

Pressure Capability: Application dependent; verify the TCN design and equipment requirements

Lubrication: Oil and compatible grease

Temperature Range: Typically approximately -30°C to +100°C for standard NBR; verify the actual compound and operating conditions

Application Class: Heavy-Duty Industrial Bearing and Rotating Equipment

Standard: Inch-Size Industrial Seal

🔁 Equivalent

Suitable replacement for compatible:

CR TCN Rotary Shaft Seal

Chicago Rawhide TCN Oil Seal

SKF CR TCN Industrial Seal

7.250x8.756x0.625 Oil Seal

184.15x222.40x15.88 Rotary Seal

Large Bearing Housing Seal

Inch-Size NBR Oil Seal

Industrial Gearbox Shaft Seal

OEM TCN Shaft Seal

Heavy-Duty Rotary Shaft Seal

The same dimensions alone do not guarantee interchangeability. The replacement seal must match the original TCN cross-section, lip orientation, outside-diameter construction, spring arrangement, pressure capability, and material compound.

(Always verify dimensions, TCN profile geometry, lip direction, spring construction, shaft condition, lubricant compatibility, rotational speed, pressure, temperature, and operating conditions before ordering.)

📦 Availability

✅ In Stock

🚚 Fast Delivery Available

🌎 Worldwide Shipping Available

📦 MOQ: 1 Piece

🏭 Suitable for gearbox overhaul, bearing-housing maintenance, pump repair, transmission servicing, agricultural machinery maintenance, mining equipment repair, and compatible OEM replacement applications.

📲 Contact via LINE ID: dusitrea

📧 Email: sales@seal4go.com

💬 Technical support available before ordering

🔍 Assistance available for cross-reference and equivalent part identification