Rotary Shaft Seal 35x62x11/12.5 mm NBR TC Double Lip

Applications

The product Rotary Shaft Seal 35x62x11/12.5 TC NBR Double Lip is a high-quality oil seal (shaft sealing ring) tailored for demanding rotary and oscillating shaft assemblies in industrial, hydraulic and automotive environments. Designed to fit a 35 mm shaft diameter, 62 mm outer housing bore, and a height of 11 to 12.5 mm, this technical seal finds its place in pump drives, gearboxes, engine auxiliary drives, motor shafts, compressor units, bearing housings and other heavy-duty applications. The double-lip (TC) design effectively combines the primary sealing lip and a secondary dust lip, offering enhanced protection against lubricant loss, contamination ingress and high-speed shaft rotation. Ideal for industrial applications where a standard single lip oil seal would not meet the lifespan or durability requirements.

Advantages

• High durability and resistance to oils and grease: Made from nitrile butadiene rubber (NBR), this seal material handle mineral oils, synthetic lubricants and automotive greases while maintaining sealing performance under temperature fluctuations.

• Double lip oil seal design (‘TC’): The dual-lip configuration ensures rigorous protection of the main sealing lip, reduces the risk of contamination and extends maintenance intervals compared with single lip oil seals.

• Optimised for rotary motion and negative installation tolerances: The TC profile suits rotary seal installations where shaft speeds, wiper action, or slight misalignments occur, making the seal a reliable component in bearing housings and units.

• Precision fit in standard dimensions (35x62x11/12.5 mm): Enables seamless integration into existing assemblies or replacement stocks for machines, engines and gearboxes—ideal for B2B inventory management.

• Industrial readiness: With its robust construction, this rotary seal supports applications across industrial drives, engine seal systems, hydraulic equipment and OEM spares, delivering long service life and reliable containment of lubricants.

Technical Data

• Type: Oil seal / shaft sealing ring / rotary seal, double lip (TC) design

• Dimensions: Inner diameter (d) = 35 mm • Outer diameter (D) = 62 mm • Width/height (B) = 11/12.5 mm

• Material: NBR (nitrile rubber) - excellent for oil and grease resistance, typical operating temperature range around -30 °C to +120 °C depending on specific conditions

• Lip arrangement: Double-lip (dust lip + primary lip) - ensures enhanced protection and longevity

• Typical uses: Engine seal, pump shaft seal, hydraulic motor seal, bearing housing seal, industrial machine rotary shaft seal

• Keywords: rotary shaft seal, oil seal, technical seal, high durability, resistance to oils and grease, engine seal, industrial applications, double lip oil seal
  This product is crafted for situations where a single lip oil seal might fail under combined axial and radial shaft movements, varying temperatures or contamination-rich environments. As part of a bearing unit or an obudowa łożyskowa (bearing housing), it ensures optimal sealing performance and supports maintenance-efficient operations.

FAQ

Q1: What distinguishes a double lip oil seal from a single lip oil seal?
A double lip oil seal features two sealing lips: the primary lip retains lubricant, while the secondary lip (often called the dust lip) prevents contamination ingress. This dual-lip arrangement enhances the sealing efficiency, reduces wear and extends service life compared to a standard single lip seal.

Q2: Why is NBR material commonly used for rotary shaft seals?
NBR (nitrile butadiene rubber) is a versatile elastomer well suited to contact with oils, greases, hydrocarbons and moderate temperature ranges. Its high durability in rotary oil seal applications makes it a cost-effective choice for industrial applications requiring consistent sealing under lubrication.

Q3: How do I select the correct seal size for my application?
To select the right shaft seal, measure three dimensions: shaft diameter (inner seal bore), housing bore (outer diameter) and seal width/height. For example, this model fits a 35 mm shaft, 62 mm housing bore and 11/12.5 mm height. Choose material and lip profile based on speed, temperature and contamination conditions.

Q4: In what types of industrial applications is this rotary shaft seal used?
This type of seal is used in pumps, gearboxes, engine auxiliary drives, hydraulic motors, bearing housings and drives for heavy equipment. It supports industrial applications where high durability, oil and grease resistance and effective sealing of rotating shafts are required.

Q5: Is this product suitable for B2B clients and bulk inventory?
Yes. The use of standard dimensions (35x62x11/12.5 mm), double lip profile and industrial-grade materials makes this part ideal for B2B procurement. It supports inventory standardisation, rapid replacement and maintenance reduction in production and service environments.