Mechanical seals are sealing elements used in pumps and similar rotating equipment to prevent leaks between the shaft and the housing.

Centrifugal pumps are most commonly used in booster pumps and circulation pumps. Pump type/model and dimensions should be considered together to select the appropriate product.

The key information for size selection is the shaft diameter. Additionally, seal type and operating conditions (fluid, temperature, pressure) are important for choosing the correct product. If you are unsure, you can share a photo and measurements of your existing seal with us for assistance.

Incorrect size or type selection, improper assembly, dry running, shaft surface wear, bearing failure, and vibration can all cause leaks.

Material selection depends on the fluid and operating conditions. Carbon ceramic is a common option; for more demanding conditions, different surface combinations (e.g., silicon carbide) may be preferred.

Shaft diameter, pump type/model, fluid type, temperature, and pressure information are the most critical criteria for selecting the correct mechanical seal.

Yes. For items in stock, shipping is done the same day.

Orders for same-day shipping are processed until 4 PM.

Yes, hand delivery is possible within Bursa. Please contact us for delivery details.

Astel Mechanical Installations sells mechanical seals, primarily based in Bursa/Nilüfer, and provides sales and delivery to all provinces of Türkiye.

Yes. You can get a discounted price for bulk purchases by submitting your order through the "Get a Quote" form. We also offer seasonal surprise campaigns and brand-specific discounts.