58x70x7.5/7mm TB Type NBR Oil Seal for Motors & Pumps

This 58×70×7.5/7mm oil seal is a general-purpose rotary shaft sealing solution for industrial and light automotive scenarios, mainly used for radial sealing of rotating shafts in equipment such as industrial motors, centrifugal pumps, reducers and agricultural machinery.

It adopts TB type exposed metal case structure, which provides reliable press-fit positioning in the housing bore and resists radial displacement under vibration conditions. The precision-machined NBR sealing lip, matched with a carbon steel garter spring, maintains stable radial contact pressure on the shaft surface, effectively blocking lubricating oil leakage inside the equipment and preventing external dust, water mist and impurities from invading the bearing chamber.

This size is a common general specification in the industrial field, interchangeable with oil seals of the same size from mainstream brands. It is suitable for both OEM supporting of small and medium-sized equipment and aftermarket maintenance replacement. We maintain long-term stable stock of conventional sizes to meet the needs of bulk procurement and urgent maintenance.

Core value for buyers

• Universal industrial size, widely compatible with motors, pumps, reducers and other equipment
• Stable sealing performance under medium speed and medium load working conditions
• Mature production technology, stable batch quality, cost-effective for bulk use
• Fast delivery from stock, supporting small batch trial and large batch replenishment

Features & Benefits

• Universal industrial standard size 58x70x7.5/7mm, widely compatible with motors, pumps, reducers and other rotating shaft equipment
• Exposed metal case structure provides reliable press-fit positioning and resists radial displacement under vibration
• Premium NBR nitrile rubber sealing lip with garter spring, stable contact pressure and good oil resistance and wear resistance
• Suitable for medium speed and medium load working conditions, widely used in general industrial scenarios
• Strict dimensional inspection per batch, stable quality consistency, interchangeable with mainstream brand products of the same size
• Factory direct supply with competitive bulk pricing, cost-effective for large-scale industrial maintenance and OEM supporting
• Stable finished goods inventory, supports fast delivery for urgent maintenance and small batch trial orders
• Flexible customization options including private label and FKM high-temperature material upgrade

Material & Process

• Material：Premium grade NBR (nitrile butadiene rubber) sealing lip, cold-rolled steel outer case, carbon steel garter spring
• Structure：TB type single-lip exposed metal case rotary shaft oil seal
• Hardness：70±5 Shore A
• Key performance：Oil resistant, wear resistant, dust-proof, anti-aging
  Working temperature range: -30℃ ~ +120℃ (standard NBR 70)
• Working speed：≤12 m/s (medium speed condition)

Manufacturing process

• Integrated vulcanization bonding between rubber lip and metal case

• Precision trimming of sealing lip edge for uniform contact pressure

• Dimensional inspection per production batch before shipment

• Quality control aligned with general industrial sealing standards

• Upgrade option：FKM (fluoroelastomer) version available for higher temperature and chemical resistance requirements

Packaging & Delivery

• Inner packaging：Each piece individually packed in anti-dust poly bag to protect the sealing lip.
• Outer packaging：Standard export corrugated carton with moisture-proof lining. Custom packaging with private label available.
• Packing quantity：Adjustable per bulk order requirements.

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.
• Custom services：Private label printing, custom packaging design, consolidated shipping for mixed SKUs
• Shipping terms：EXW, FOB, CIF available
• Export documents：Commercial invoice, packing list, certificate of origin available on request