Rotary Shaft Seal NBR 50x58x4 ZBA / VC - Single-lip Oil Seal Without Spring

Rotary Shaft Seal NBR 50x58x4 ZBA / VC - Single-lip Oil Seal Without Spring

The Rotary Shaft Seal NBR 50x58x4 ZBA / VC is a single-lip oil seal without spring, designed for reliable shaft sealing in pumps, gearboxes, and industrial machinery. Manufactured from high-quality nitrile rubber (NBR), this seal provides dependable resistance to oils, lubricants, and industrial fluids in low-pressure applications.

Technical Specifications

• Material: NBR (nitrile rubber)

• Type: ZBA / VC - single-lip, without spring

• Inner Diameter (ID): 50 mm

• Outer Diameter (OD): 58 mm

• Width: 4 mm

• Temperature Range: approx. -30 °C to +100 °C (depending on medium and conditions)

• Pressure Resistance: low to medium (not designed for high pressure)

Key Benefits

• Reliable shaft sealing in low-pressure systems

• Simplified design without spring → fewer components, less wear

• Excellent oil and grease resistance

• Compact dimensions (50x58x4 mm) for precise fit

• Cost-effective solution for industrial and mechanical use

Typical Applications

• Rotary shafts in industrial machines

• Pumps, gearboxes, and electric motors

• Low-pressure hydraulic and mechanical systems

• Oil and grease sealing in compact machinery

FAQ - Frequently Asked Questions

1. Does this rotary shaft seal include a spring?
No - it is a single-lip ZBA / VC design without spring, ideal for low-pressure applications.

2. What is the working temperature range?
NBR seals typically operate between -30 °C and +100 °C.

3. Is it suitable for high-pressure applications?
No - for high pressure, choose a rotary shaft seal with a spring or a double-lip design.

4. What fluids is NBR resistant to?
NBR resists oils, greases, hydraulic fluids, and many standard industrial media. It is not suitable for aggressive solvents or strong chemicals.

5. How do I ensure this is the correct size?
Check your dimensions: shaft diameter 50 mm, housing bore 58 mm, and seal width 4 mm. If these match, this is the correct seal.