The PBR Oil Seal 1.750x2.750x0.375 TC NBR is designed for rotary shaft applications around a 1.750-inch shaft within a 2.750-inch housing bore.

The TC profile is commonly associated with a double-lip rotary shaft seal consisting of a spring-loaded main sealing lip for lubricant retention and an auxiliary lip for dust and contamination exclusion. The elastomer is normally supported by internal metal reinforcement.

Although TC is a widely recognized profile family, the exact PBR cross-section, elastomer covering, lip geometry, spring dimensions, and installation orientation should still be checked against the actual seal or manufacturer drawing 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 oil, 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 prolonged elevated temperatures.

The inch dimensions convert approximately to:

Shaft diameter: 1.750 inches / 44.45 mm

Housing diameter: 2.750 inches / 69.85 mm

Seal width: 0.375 inch / 9.53 mm

⚙️ Applications

• Industrial gearboxes
• Bearing housings
• Mechanical transmissions
• Industrial pumps
• Electric motors
• Agricultural machinery
• Construction equipment
• Conveyor drive assemblies
• General rotating machinery
• OEM industrial equipment

🎯 Benefits

✔ Double-lip style for lubricant retention and contamination exclusion

✔ Suitable for 1.750-inch shaft assemblies

✔ NBR material suitable for many oil and grease applications

✔ Garter-spring-loaded primary sealing lip

✔ Auxiliary dust lip helps reduce contamination ingress

✔ Good resistance to abrasion and wear

✔ Suitable for common industrial rotating equipment

✔ Compact 0.375-inch axial width

✔ Suitable for maintenance and replacement applications

🧠 Technical Insight

• PBR TC Seal Reference
• Common Double-Lip Rotary Shaft Seal
• Spring-Loaded Primary Lip
• Auxiliary Dust Lip
• NBR Sealing Material
• 44.45 mm Shaft Diameter
• 69.85 mm Housing Diameter
• Exact PBR TC Geometry Should Be Verified

✅ Key Features

• PBR Industrial Seal
• TC Profile
• Double-Lip Configuration
• Garter Spring on Main Lip
• Auxiliary Dust Lip
• Oil-Resistant NBR Material
• 1.750x2.750x0.375 Dimensions
• Cross-Reference Support Available

📊 Specifications

Brand: PBR

Model / Profile: TC

Size: 1.750 × 2.750 × 0.375 inch

Metric Equivalent: Approximately 44.45 × 69.85 × 9.53 mm

Type: Double-Lip Rotary Shaft Oil Seal

Material: NBR (Nitrile Butadiene Rubber)

Profile: TC

Construction: Elastomer Sealing Element with Internal Metal Reinforcement

Lip Design: Commonly spring-loaded primary sealing lip plus auxiliary dust lip; verify exact PBR TC cross-section

Dust Lip: Yes, commonly present on TC profile; verify actual item

Spring Type: Garter spring on the primary sealing lip

Shaft Diameter (ID): 1.750 inches / 44.45 mm

Housing Diameter (OD): 2.750 inches / 69.85 mm

Width: 0.375 inch / approximately 9.53 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 on shaft diameter, shaft finish, lubrication, temperature, lip loading, alignment, concentricity, and runout

Installation Consideration: Verify shaft finish, shaft hardness, housing condition, installation depth, lip orientation, spring condition, concentricity, and runout before installation

Application Class: General Industrial Bearing, Gearbox, Pump, Motor, and Transmission Equipment

Standard: Inch-Size TC Rotary Shaft Seal

🔁 Equivalent

Suitable replacement or cross-reference candidate for compatible:

• PBR TC NBR Rotary Shaft Seal
• PBR 1.750x2.750x0.375 Oil Seal
• 44.45x69.85x9.53 Oil Seal
• 1.750-Inch Shaft Oil Seal
• Double-Lip NBR Oil Seal
• Bearing Housing Shaft Seal
• Industrial Gearbox Oil Seal
• Pump Shaft Oil Seal
• Motor Shaft Oil Seal
• OEM TC Profile Seal

The same dimensions alone do not guarantee interchangeability. The replacement must also match the original TC cross-section, lip geometry, auxiliary-lip arrangement, spring configuration, case construction, elastomer coverage, installation orientation, NBR compound, and operating requirements.

(Always verify dimensions, TC profile, lip arrangement, 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 bearing-housing maintenance, gearbox overhaul, pump repair, motor servicing, mechanical transmissions, agricultural machinery, conveyor systems, 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