The USI Oil Seal 1.219x2.187x0.438 LGS NBR is designed for industrial rotary shaft applications requiring lubricant retention around a 1.219-inch shaft within a 2.187-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 dust, moisture, and external contamination.

The product is identified by the USI manufacturer designation LGS. 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 high-temperature service.

The inch dimensions convert approximately to:

Shaft diameter: 1.219 inches or approximately 30.96 mm

Housing diameter: 2.187 inches or approximately 55.55 mm

Seal width: 0.438 inch or approximately 11.13 mm

The 1.219 × 2.187 × 0.438-inch configuration is suitable for compact-to-medium bearing housings, small gearboxes, pumps, motors, transmissions, and legacy machinery using an inch-size 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 approximately 30.96 mm shaft assemblies

✔ Manufacturer-specific USI LGS profile

✔ Good resistance to abrasion and wear

✔ 0.438-inch axial width

✔ Suitable for maintenance and overhaul work

✔ Replacement ready when dimensions and LGS profile match

🧠 Technical Insight

• USI LGS Seal Reference
• Inch-Size Rotary Shaft Seal
• NBR Sealing Material
• Manufacturer-Specific LGS Profile
• Radial Shaft-Sealing Function
• Low-Pressure Lubricant Retention
• Approximately 30.96 mm Shaft Diameter
• Exact LGS Cross-Section Must Be Verified

✅ Key Features

• USI Industrial Quality
• LGS Profile Reference
• Oil-Resistant NBR Material
• Inch-Size Construction
• 1.219x2.187x0.438 Dimensions
• Suitable for Compatible Oil and Grease
• Industrial Replacement Seal
• Cross-Reference Support Available

📊 Specifications

Brand: USI

Model / Profile: LGS

Size: 1.219 × 2.187 × 0.438 inch

Metric Equivalent: Approximately 30.96 × 55.55 × 11.13 mm

Type: Industrial Rotary Shaft Oil Seal

Material: NBR (Nitrile Butadiene Rubber)

Profile: LGS

Construction: Manufacturer-Specific USI LGS Rotary Shaft-Seal Construction

Lip Design: LGS 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 LGS cross-section

Spring Type: Verify from the actual seal construction

Shaft Diameter (ID): 1.219 inches / approximately 30.96 mm

Housing Diameter (OD): 2.187 inches / approximately 55.55 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:

• USI LGS NBR Rotary Shaft Seal
• USI 1.219x2.187x0.438 Oil Seal
• 30.96x55.55x11.13 Rotary Seal
• 1.219-Inch Shaft Oil Seal
• Inch-Size NBR Rotary Shaft Seal
• Industrial Bearing Housing Seal
• Small Gearbox Shaft Seal
• Industrial Pump Shaft Seal
• OEM LGS Profile Oil Seal
• Industrial NBR Shaft Seal

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

(Always verify dimensions, LGS-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