100x140x11/21mm TB Oil Seal OEM 31C89G‑04080 For Medium‑Light‑Duty Commercial Truck Rear Axle Hub

This TB‑type heavy‑duty truck oil seal OEM#31C89G‑04080 is replacement part for medium‑light‑duty commercial truck rear‑axle hub. Dimension ID100mm × OD140mm, mounting width 11 mm, overall total height 21 mm.

Adopts robust stamped step‑shape metal outer shell and NBR nitrile rubber sealing lip. Effectively retains rear axle gear lubricant inside axle housing, stops dust, mud, sand and splash‑water invading into wheel hub assembly. Widely used for medium‑light‑duty commercial truck equipped with Dana drive axle. Suitable for auto repair shop, domestic auto‑parts wholesale and cross‑border truck‑parts export business.

Core functions

• Prevent rear axle gear oil leakage under heavy‑load road vibration
• Resist mud, grit and splash‑water contamination for hub bearing
• Step‑form metal shell for precise interference press‑fit into axle housing bore
• Stable sealing performance under long‑distance heavy‑duty transport condition

Features & Benefits

• Standard TB step‑shaped reinforced stamped metal shell, stable interference fit for truck rear‑axle housing bore press‑fit installation.
• NBR sealing lip with garter‑spring pre‑load design, holds rear‑axle gear‑oil and blocks mud, dust and splash‑water.
• Strict dimensional tolerance control, direct aftermarket replacement matches OEM 31C89G‑04080 for medium‑light‑duty commercial truck rear axle.
• Brand‑new factory‑direct product, durable sealing performance for medium‑heavy‑duty truck chassis working conditions.
• Adequate in‑stock supply, support sample trial, small‑batch retail and large‑volume export wholesale.
• OEM private‑label service available for overseas truck‑parts distributors.
• Precision vulcanization craft, firm rubber‑metal bonding, excellent anti‑vibration performance for truck undercarriage.
• FKM fluoro‑rubber upgrade option available for severe high‑temperature heavy‑load working scenarios.

Material & Process

• Material：NBR nitrile rubber sealing lip, anti‑rust painted stamped carbon‑steel metal shell, garter spring
• Structure：TB‑type step outer casing rotary shaft oil seal
• Key properties：Gear‑oil resistant, mud‑proof, anti‑vibration, anti‑aging
  Working temperature:‑20℃ ~ +120℃

Manufacturing features

• High‑temperature vulcanization bonding between NBR rubber and metal shell, avoid delamination under truck bumping vibration.

• Precision‑machined sealing lip with garter spring maintains consistent radial pressure on shaft surface.

• Anti‑rust treated metal shell adapts to chassis undercarriage harsh working environment.

• NBR compound compatible with commercial vehicle rear‑axle gear oil.

• Upgrade option：FKM fluoro‑rubber variant for higher‑temperature heavy‑load working scenarios.

Packaging & Delivery

• Inner package：Individual anti‑dust poly bag for each piece to protect sealing lip from scratch.
• Outer package：Reinforced export carton.
• Packing quantity：Adjustable per purchase requirement.
• MOQ and lead time：In stock: ships in 1 to 2 days. Not in stock but still in current production: 10 to 15 days. Not in stock and not in production: 25 to 30 days.
  Shipping protection: Moisture‑proof, dust‑proof and anti‑collision packing to prevent deformation during transit.