The UNIVERSAL 1.688x2.687x0.500 NBR Oil Seal is designed for rotating shaft applications requiring dependable sealing performance and enhanced housing fitment.

This seal utilizes a rubber-covered outer diameter (OD Covered Type / กันนอก) construction. The rubber coating around the outside diameter improves sealing between the seal and housing bore while helping compensate for minor imperfections in the housing surface. This design also helps reduce leakage around the outer diameter and improves installation reliability.

The primary sealing lip is engineered to maintain consistent contact pressure against the shaft surface, helping prevent lubricant leakage while protecting critical machine components from contamination. The design is suitable for oil-lubricated and grease-lubricated equipment operating under normal industrial conditions.

The rubber-covered outer diameter additionally helps absorb vibration and improves retention within the housing, making this style particularly suitable for industrial machinery subject to continuous operation and varying operating conditions.

Manufactured from premium NBR (Nitrile Butadiene Rubber), the seal provides excellent resistance to lubricating oils, hydraulic fluids, gear oils, grease, and petroleum-based lubricants. NBR offers outstanding durability, flexibility, abrasion resistance, and cost-effective sealing performance.

With dimensions of 1.688 x 2.687 x 0.500 inch, this seal is commonly used in industrial pumps, gearboxes, electric motors, agricultural machinery, compressors, conveyors, and OEM equipment utilizing inch-size shaft systems.

⚙️ Applications

• Industrial pumps
• Industrial gearboxes
• Electric motors
• Agricultural machinery
• Air compressors
• Conveyor systems
• Hydraulic equipment
• Power transmission systems
• Construction machinery
• OEM industrial equipment

🎯 Benefits

✔ Excellent oil retention

✔ Improved housing sealing performance

✔ Reduce external leakage

✔ Protect against dust and contaminants

✔ Extend bearing and shaft life

✔ Reduce maintenance costs

✔ Improve equipment reliability

✔ Easy installation

✔ Suitable for continuous-duty operation

🧠 Technical Insight

• Rubber Covered OD Design
• Improved housing fit and sealing
• Suitable for oil and grease lubrication
• Excellent dimensional stability
• Vibration-resistant construction
• NBR provides superior oil resistance
• Designed for industrial rotating equipment
• Long-term sealing performance

✅ Key Features

• UNIVERSAL Industrial Quality
• Rubber Covered Outer Diameter
• Premium NBR Material
• Excellent Oil Resistance
• Reliable Sealing Performance
• Easy Installation
• OEM Replacement Ready
• Long Service Life

📊 Specifications

Brand: UNIVERSAL

Size: 1.688 x 2.687 x 0.500 inch

Type: Rotary Shaft Oil Seal

Material: NBR (Nitrile Rubber)

Construction: Rubber Covered OD

Shaft Diameter (ID): 1.688 inch

Housing Diameter (OD): 2.687 inch

Width: 0.500 inch

Lubrication: Oil & Grease

Application Class: Industrial Service

Standard: Inch Size Oil Seal

🔁 Equivalent

Suitable replacement for:

• SKF Rubber Covered Oil Seal
• CR Chicago Rawhide Oil Seal
• NOK Oil Seal
• CFW Rotary Shaft Seal
• KACO Oil Seal
• DICHTOMATIK Oil Seal
• TRELLEBORG Rotary Seal
• National Oil Seal

(Always verify dimensions and seal design before ordering.)

📦 Availability

✅ In Stock

🚚 Fast Delivery Available

🌎 Worldwide Shipping Available

📦 MOQ: 1 Piece

🏭 Suitable for industrial maintenance, pump repair, gearbox overhaul, machinery rebuilding, and OEM replacement

📲 Contact via LINE ID: dusitrea

📧 Email: sales@seal4go.com

💬 Technical support available before ordering

🔍 Assistance available for cross-reference and equivalent part identification