The CR Oil Seal 9.250x11.250x0.750 TCN NBR is designed for rotary shaft applications requiring lubricant retention around a 9.250-inch shaft within an 11.250-inch housing bore.

Installed between the rotating shaft and stationary housing, the sealing element maintains controlled contact with the shaft surface to help reduce leakage of compatible oil or grease while supporting protection of bearings, gears, transmissions, and other internal rotating components.

The product is identified by the CR manufacturer designation TCN. This is a manufacturer-specific profile code and should not automatically be treated as equivalent to a standard TC profile. The exact sealing-lip geometry, number of lips, dust-exclusion arrangement, outside-case construction, internal reinforcement, spring configuration, lip orientation, and installation direction should be verified against the original CR seal, technical drawing, or equipment specification before replacement.

Manufactured from NBR (Nitrile Butadiene Rubber), the sealing material is generally suitable for:

• Mineral oils
• Gear oils
• Hydraulic oils
• Bearing grease
• Petroleum-based lubricants
• General industrial lubricating fluids

NBR generally provides good resistance to petroleum-based oils, grease, abrasion, and mechanical wear under normal industrial operating conditions. Compatibility should be verified before use with aggressive chemicals, certain fuels, specialized synthetic lubricants, ozone-rich environments, or sustained high-temperature operation.

The inch dimensions convert approximately to:

Shaft diameter: 9.250 inches / 234.95 mm

Housing diameter: 11.250 inches / 285.75 mm

Seal width: 0.750 inch / 19.05 mm

The 9.250 × 11.250 × 0.750-inch configuration is a very large-diameter sealing arrangement. For applications of this size, shaft finish, shaft hardness, alignment, concentricity, runout, housing geometry, installation depth, and installation tooling are especially important.

⚙️ Applications

• Heavy industrial gearboxes
• Large bearing housings
• Mechanical transmissions
• Large shaft assemblies
• Industrial drive systems
• Construction machinery
• Mining and bulk-handling equipment
• Conveyor drive systems
• Legacy rotating machinery
• OEM industrial equipment

🎯 Benefits

✔ Suitable for very large 9.250-inch shaft assemblies

✔ Oil-resistant NBR sealing material

✔ Manufacturer-specific CR TCN profile

✔ Suitable for heavy industrial rotating equipment

✔ Helps retain compatible oil or grease

✔ Good resistance to abrasion and wear

✔ Suitable for large bearing and gearbox applications

✔ Useful for maintenance and overhaul work

✔ Replacement ready when dimensions and TCN profile match

🧠 Technical Insight

• CR TCN Seal Reference
• Large Inch-Size Rotary Shaft Seal
• NBR Sealing Material
• Manufacturer-Specific TCN Profile
• 234.95 mm Shaft Diameter
• 285.75 mm Housing Diameter
• Heavy-Duty Industrial Application
• Exact TCN Cross-Section Must Be Verified

✅ Key Features

• CR Industrial Seal
• TCN Profile Reference
• Oil-Resistant NBR Material
• Large Inch-Size Construction
• 9.250x11.250x0.750 Dimensions
• Heavy-Duty Shaft Application
• Industrial Replacement Seal
• Cross-Reference Support Available

📊 Specifications

Brand: CR

Model / Profile: TCN

Size: 9.250 × 11.250 × 0.750 inch

Metric Equivalent: Approximately 234.95 × 285.75 × 19.05 mm

Type: Large Industrial Rotary Shaft Oil Seal

Material: NBR (Nitrile Butadiene Rubber)

Profile: TCN

Construction: Manufacturer-Specific CR TCN Rotary Shaft-Seal Construction

Lip Design: TCN profile; verify exact sealing-lip geometry, number of lips, and orientation against the original seal or technical drawing

Dust Lip: Verify from the actual TCN cross-section

Spring Type: Verify from the actual TCN seal construction

Shaft Diameter (ID): 9.250 inches / 234.95 mm

Housing Diameter (OD): 11.250 inches / 285.75 mm

Width: 0.750 inch / 19.05 mm

Pressure Capability: Primarily low-pressure rotary shaft-sealing service unless otherwise specified

Lubrication: Compatible oil and grease

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

Speed Consideration: Permissible speed depends strongly on the large shaft diameter, shaft finish, lubrication, temperature, alignment, concentricity, runout, lip loading, and actual TCN construction

Installation Consideration: Carefully verify shaft finish and hardness, housing-bore geometry, installation depth, lip orientation, alignment, concentricity, runout, and use suitable installation tooling because of the large seal diameter

Application Class: Very Large Industrial Bearing, Gearbox, Transmission, and Rotating Equipment

Standard: Inch-Size Specialized Industrial Seal

🔁 Equivalent

Suitable replacement or cross-reference candidate for compatible:

• CR TCN NBR Rotary Shaft Seal
• CR 9.250x11.250x0.750 Oil Seal
• 234.95x285.75x19.05 Rotary Seal
• 9.250-Inch Shaft Oil Seal
• Large NBR Rotary Shaft Seal
• Heavy-Duty Bearing Housing Seal
• Industrial Gearbox Shaft Seal
• Large Transmission Shaft Seal
• OEM TCN Profile Oil Seal
• Heavy Industrial NBR Seal

The same dimensions alone do not guarantee interchangeability. The replacement must also match the original TCN cross-section, sealing-lip geometry, number of lips, lip orientation, outside-case construction, reinforcement arrangement, spring configuration, installation direction, material compound, and operating requirements.

(Always verify dimensions, TCN-profile geometry, complete cross-section, shaft finish, shaft hardness, housing condition, installation depth, lubricant compatibility, rotational speed, temperature, concentricity, runout, pressure, and operating conditions before ordering.)

📦 Availability

✅ In Stock

🚚 Fast Delivery Available

🌎 Worldwide Shipping Available

📦 MOQ: 1 Piece

🏭 Suitable for heavy gearbox overhaul, large bearing-housing maintenance, transmission repair, large shaft systems, industrial drives, construction machinery, mining equipment, bulk-handling systems, conveyors, 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