The REPCO Oil Seal 1.125x1.875x0.438 LGSP NBR is designed for industrial rotary shaft applications requiring lubricant retention around a 1.125-inch shaft within a 1.875-inch housing bore.

Installed between the rotating shaft and stationary housing, the sealing element maintains controlled radial contact with the shaft surface. This helps reduce leakage of compatible oil or grease while protecting bearings, gears, pumps, motors, and other internal rotating components from external contamination.

The product is identified by the REPCO manufacturer designation LGSP. This is a manufacturer-specific profile code. 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 seal, technical drawing, or equipment specification before replacement.

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

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

NBR 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, fuels, ozone-rich environments, specialized synthetic lubricants, or continuous elevated-temperature service.

The inch dimensions convert approximately to:

Shaft diameter: 1.125 inches or 28.58 mm

Housing diameter: 1.875 inches or 47.63 mm

Seal width: 0.438 inch or approximately 11.13 mm

The 1.125 × 1.875 × 0.438-inch configuration is suitable for compact-to-medium bearing housings, small gearboxes, pumps, motors, transmissions, and legacy machinery using an inch-size rotary shaft-sealing arrangement.

⚙️ Applications

• Industrial gearboxes
• Bearing housings
• Industrial pumps
• Electric motor assemblies
• Mechanical transmissions
• Agricultural machinery
• Construction equipment
• Conveyor drive systems
• Legacy industrial machinery
• OEM rotating equipment

🎯 Benefits

✔ Helps retain compatible oil or grease

✔ Protects bearings and internal components

✔ Oil-resistant NBR sealing material

✔ Suitable for 1.125-inch shaft assemblies

✔ Manufacturer-specific REPCO LGSP profile

✔ Good resistance to abrasion and wear

✔ 0.438-inch axial width

✔ Suitable for maintenance and overhaul work

✔ Replacement ready when dimensions and LGSP profile match

🧠 Technical Insight

• REPCO LGSP Seal Reference
• Inch-Size Rotary Shaft Seal
• NBR Sealing Material
• Manufacturer-Specific LGSP Profile
• Radial Shaft-Sealing Function
• Low-Pressure Lubricant Retention
• 28.58 mm Shaft Diameter
• Exact LGSP Cross-Section Must Be Verified

✅ Key Features

• REPCO Industrial Quality
• LGSP Profile Reference
• Oil-Resistant NBR Material
• Inch-Size Construction
• 1.125x1.875x0.438 Dimensions
• Suitable for Compatible Oil and Grease
• Industrial Replacement Seal
• Cross-Reference Support Available

📊 Specifications

Brand: REPCO

Model / Profile: LGSP

Size: 1.125 × 1.875 × 0.438 inch

Metric Equivalent: Approximately 28.58 × 47.63 × 11.13 mm

Type: Industrial Rotary Shaft Oil Seal

Material: NBR (Nitrile Butadiene Rubber)

Profile: LGSP

Construction: Manufacturer-Specific REPCO LGSP Rotary Shaft-Seal Construction

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

Dust Lip: Verify from the actual LGSP cross-section

Spring Type: Verify from the actual seal construction

Shaft Diameter (ID): 1.125 inches / 28.58 mm

Housing Diameter (OD): 1.875 inches / 47.63 mm

Width: 0.438 inch / approximately 11.13 mm

Pressure Capability: 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 the actual compound, lubricant, shaft speed, and operating conditions

Speed Consideration: Permissible speed depends on shaft diameter, surface finish, lubrication, temperature, alignment, runout, lip loading, and NBR compound

Installation Consideration: Confirm shaft finish, housing-bore condition, installation depth, lip direction, concentricity, and protection from sharp shaft edges before fitting

Application Class: Compact-to-Medium Industrial Bearing and Rotating Equipment

Standard: Inch-Size Specialized Industrial Seal

🔁 Equivalent

Suitable replacement or cross-reference candidate for compatible:

• REPCO LGSP NBR Rotary Shaft Seal
• REPCO 1.125x1.875x0.438 Oil Seal
• 28.58x47.63x11.13 Rotary Seal
• 1.125-Inch Shaft Oil Seal
• Inch-Size NBR Rotary Shaft Seal
• Industrial Bearing Housing Seal
• Small Gearbox Shaft Seal
• Industrial Pump Shaft Seal
• OEM LGSP Profile Oil Seal
• Industrial NBR Shaft Seal

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

(Always verify dimensions, LGSP-profile geometry, lip direction, shaft finish, housing condition, installation depth, lubricant compatibility, rotational speed, temperature, runout, pressure, and operating conditions before ordering.)

📦 Availability

✅ In Stock

🚚 Fast Delivery Available

🌎 Worldwide Shipping Available

📦 MOQ: 1 Piece

🏭 Suitable for gearbox overhaul, bearing-housing maintenance, industrial pump repair, motor servicing, transmission maintenance, agricultural-machinery repair, conveyor-drive servicing, legacy-equipment restoration, 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