Shaft Seal 15x23x3 ZBA NBR (Single Lip, Without Spring)

Technical Specification and Construction

The shaft seal 15x23x3 ZBA NBR is engineered for demanding industrial environments. With inner diameter 15 mm, outer diameter 23 mm and width 3 mm, this single-lip seal features a spring-less design (ZBA type) that enables a compact installation footprint. The sealing lip is made of NBR (nitrile-butadiene rubber), backed by a rigid metal case for optimal performance under rotation. This oil seal and rotary shaft seal solution excels in applications requiring high durability, resistance to oils and grease, and reliable sealing in industrial conditions. The single-lip format serves as a cost-effective alternative to double-lip oil seals when space is limited and contamination risk is moderate.

Industrial Applications & Benefits

This shaft sealing ring is well suited for automation systems, gearboxes, electric motors, pumps and mechanical drives where a compact oil seal with single-lip construction is required. Key search terms in English and Polish include “shaft seal 15x23x3”, “single lip oil seal NBR”, “rotary shaft seal springless”. In B2B industrial contexts, the choice of this technical seal delivers lower maintenance costs, easier inventory management and high operational reliability. Thanks to its resistance to oils and grease, this industrial shaft seal is ideal in engine seals, hydraulic systems and other high-demand environments.

Installation, Operation and Maintenance Tips

For correct installation, the housing bore and shaft must be clean, burr-free and within tolerance. Press the seal evenly into the seat without deforming the lip. The NBR material provides reliable performance for oil and grease lubrication; however, the single-lip, springless design should be used in moderate speed or moderate contamination environments. This seal requires minimal maintenance and is particularly effective in applications with restricted axial space. For optimal longevity, monitor lubricant levels regularly, check for wear or grooving on the shaft and avoid abrasive contaminants in the housing.

FAQ - Frequently Asked Questions

Q1: What is the difference between a single-lip and double-lip oil seal?
A1: A single-lip oil seal (such as ZBA type) has one sealing ring and no garter spring, making it compact and efficient for many industrial applications. A double-lip oil seal adds a dust lip or spring for enhanced protection in highly contaminated or high-pressure systems.

Q2: What does the term “ZBA springless” mean for this shaft seal?
A2: “ZBA springless” indicates the design lacks a garter spring behind the lip, simplifying installation and reducing axial space required, which is suitable for compact housings or lower speed applications.

Q3: Why choose NBR material for this seal?
A3: NBR (nitrile rubber) offers excellent resistance to oils and grease, good elasticity and durability in typical industrial oil-lubricated environments, making it a strong choice for general industrial shaft sealing applications.

Q4: How do I select the correct seal size?
A4: Ensure the seal inner diameter matches the shaft diameter (15 mm in this case), the outer diameter fits the bore (23 mm), and the width (3 mm) fits the axial space in the housing. Check for correct tolerance and seating depth.

Q5: Is the product available for immediate dispatch?
A5: 📍 Warehouse & Store: Lublin, ul. Smoluchowskiego 1, building 4
🚚 24h Delivery - fast order processing for industrial B2B clients.