The DICHTA Oil Seal 101.6x127x12.7 LGSP NBR is designed for industrial rotary shaft applications requiring lubricant retention around a 101.6 mm shaft within a 127 mm 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, transmissions, motors, and other internal rotating components from external contamination.

The product is identified by the DICHTA 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 DICHTA 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 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 fluids, ozone-rich environments, or continuous elevated-temperature service.

The dimensions are:

Shaft diameter: 101.6 mm / 4.000 in

Housing diameter: 127 mm / 5.000 in

Seal width: 12.7 mm / 0.500 in

The 101.6 × 127 × 12.7 mm configuration is therefore an exact metric representation of a 4.000 × 5.000 × 0.500-inch nominal seal size.

For a seal of this diameter, shaft finish, shaft hardness, housing alignment, concentricity, runout, installation depth, and proper lubrication at the sealing interface are important factors affecting sealing performance and service life.

⚙️ Applications

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

🎯 Benefits

✔ Helps retain compatible oil or grease

✔ Helps protect bearings and internal components

✔ Oil-resistant NBR sealing material

✔ Suitable for 101.6 mm / 4-inch shaft assemblies

✔ Manufacturer-specific DICHTA LGSP profile

✔ Good resistance to abrasion and wear

✔ Suitable for medium-to-large rotating equipment

✔ Suitable for maintenance and overhaul work

✔ Replacement ready when dimensions and LGSP profile match

🧠 Technical Insight

• DICHTA LGSP Seal Reference
• Metric / Inch-Equivalent Rotary Shaft Seal
• NBR Sealing Material
• Manufacturer-Specific LGSP Profile
• 4.000-Inch Shaft Equivalent
• Low-Pressure Lubricant Retention
• 101.6 mm Shaft Diameter
• Exact LGSP Cross-Section Must Be Verified

✅ Key Features

• DICHTA Industrial Quality
• LGSP Profile Reference
• Oil-Resistant NBR Material
• 101.6x127x12.7 mm Dimensions
• Exact 4.000x5.000x0.500 in Equivalent
• Suitable for Compatible Oil and Grease
• Industrial Replacement Seal
• Cross-Reference Support Available

📊 Specifications

Brand: DICHTA

Model / Profile: LGSP

Size: 101.6 × 127 × 12.7 mm

Inch Equivalent: 4.000 × 5.000 × 0.500 in

Type: Industrial Rotary Shaft Oil Seal

Material: NBR (Nitrile Butadiene Rubber)

Profile: LGSP

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

Lip Design: LGSP profile; verify 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): 101.6 mm / 4.000 in

Housing Diameter (OD): 127 mm / 5.000 in

Width: 12.7 mm / 0.500 in

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, shaft finish, lubrication, temperature, alignment, concentricity, runout, lip loading, and actual NBR compound

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

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

Standard: Metric / Inch-Equivalent Specialized Industrial Seal

🔁 Equivalent

Suitable replacement or cross-reference candidate for compatible:

• DICHTA LGSP NBR Rotary Shaft Seal
• DICHTA 101.6x127x12.7 Oil Seal
• DICHTA 4.000x5.000x0.500 Oil Seal
• 101.6 mm Shaft Oil Seal
• 4-Inch Shaft Oil Seal
• 101.6x127x12.7 NBR Oil Seal
• Industrial Bearing Housing Seal
• Industrial Gearbox Shaft Seal
• Industrial Pump Shaft Seal
• OEM LGSP Profile Oil 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, 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 gearbox overhaul, large bearing-housing maintenance, industrial pump repair, motor servicing, transmission maintenance, agricultural-machinery repair, construction-equipment maintenance, conveyor-drive servicing, 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