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FLOWSERVE Mechanical Seal: Mechanical Shaft Seal, 51, 1 1/2 in Shaft Dia., 1.69 in Working Lg - Mechanical Shaft Seals
FLOWSERVEMechanical Shaft Seals

FLOWSERVE Mechanical Seal: Mechanical Shaft Seal, 51, 1 1/2 in Shaft Dia., 1.69 in Working Lg

The FLOWSERVE Mechanical Shaft Seal, type designation 51, is a single-spring mechanical seal with a carbon ring and Buna gasket. It features a 316 stainless steel spring and is designed for a 1 1/2-inch shaft…

SKU 3G-OTH-97070

Also listed as: 5115004 · 51 150 04

Brand
FLOWSERVE
Item
Mechanical Seal: Mechanical Shaft Seal, 51, 1 1/2 in Shaft Dia., 1.69 in Working Lg
Category
Mechanical Shaft Seals
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

FLOWSERVE
Manufacturer Part Number
51-150-04
Type
51, 316
Shaft Dia.
1 1/2 in
Working Lg
1.69 in
Spring Type
Single Spring
Ring Material
Carbon
Gasket Material
Buna
Spring Material
316
Seal Type Designation
51

Technical Documents

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FLOWSERVE Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The FLOWSERVE Mechanical Shaft Seal, type designation 51, is a single-spring mechanical seal with a carbon ring and Buna gasket. It features a 316 stainless steel spring and is designed for a 1 1/2-inch shaft diameter with a 1.69-inch working length (MPN 51-150-04).

Frequently Asked Questions

What is the FLOWSERVE 51-150-04 mechanical seal used for?

The FLOWSERVE 51-150-04 mechanical shaft seal is used in industrial pumps and rotating equipment to prevent fluid leakage along a 1 1/2-inch shaft. It is suitable for water, light chemicals, and general process applications where a single-spring, carbon-versus-ceramic or carbon-versus-tungsten carbide face combination is specified.

What are the specifications of the FLOWSERVE 51-150-04 mechanical seal?

The FLOWSERVE 51-150-04 is a type 51 mechanical shaft seal with a 1 1/2-inch shaft diameter and 1.69-inch working length. It uses a single 316 stainless steel spring, a carbon rotating ring, and a Buna-N gasket. The seal is designed for general-duty pump applications and is manufactured by FLOWSERVE.

Where to buy the FLOWSERVE 51-150-04 mechanical seal worldwide?

3G Electric supplies the FLOWSERVE 51-150-04 mechanical seal worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time. We source genuine FLOWSERVE components for international buyers.

How to install a FLOWSERVE type 51 mechanical seal?

To install a FLOWSERVE type 51 mechanical seal, first ensure the shaft and stuffing box are clean and free of burrs. Lubricate the seal faces and shaft O-ring with a compatible lubricant. Slide the seal assembly onto the shaft, compress the spring evenly, and secure the set screw. Follow the manufacturer's generic best practices for single-spring seals.

Used in

Common applications for FLOWSERVE
Water and wastewater pumping — FLOWSERVE Type 21 mechanical seal (e.g., MPN 21-100-10) for centrifugal pumps in municipal water treatment
Hydrocarbon processing — FLOWSERVE Type 68 mechanical seal (e.g., MPN 68-062-214) for diesel and light oil transfer pumps
Food processing — FLOWSERVE Type 21 seal (MPN 21-137-04) for cooking oil circulation pumps in edible oil refineries
Chemical transfer — FLOWSERVE Type 51 narrow cross-section seal (MPN 51-087-05) for compact chemical dosing pumps
HVAC and cooling systems — FLOWSERVE Type 16 unitized rotary seal (MPN 16-062-11) for chilled water pump shaft sealing
General industrial mixing — FLOWSERVE Type 52 narrow cross-section seal (MPN 52-125-05) for agitator shafts in batch processing tanks

FLOWSERVE Products

3G Electric supplies FLOWSERVE mechanical shaft seals. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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