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FLOWSERVE Mechanical Seal: Mechanical Shaft Seal, 21, 1 1/2 in Shaft Dia., 1.13 in Working Lg - Mechanical Shaft Seals
FLOWSERVEMechanical Shaft Seals

FLOWSERVE Mechanical Seal: Mechanical Shaft Seal, 21, 1 1/2 in Shaft Dia., 1.13 in Working Lg

The FLOWSERVE Mechanical Shaft Seal, type designation 21, is a single-spring mechanical seal designed for 1 1/2-inch shaft diameters with a 1.13-inch working length. It features a carbon ring, Viton gasket, and 18-8…

SKU 3G-OTH-96327

Also listed as: 2115009 · 21 150 09

Brand
FLOWSERVE
Item
Mechanical Seal: Mechanical Shaft Seal, 21, 1 1/2 in Shaft Dia., 1.13 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
21-150-09
Type
21, 18-8
Shaft Dia.
1 1/2 in
Working Lg
1.13 in
Spring Type
Single Spring
Ring Material
Carbon
Gasket Material
Viton
Spring Material
18-8
Seal Type Designation
21

Technical Documents

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

Product Description

The FLOWSERVE Mechanical Shaft Seal, type designation 21, is a single-spring mechanical seal designed for 1 1/2-inch shaft diameters with a 1.13-inch working length. It features a carbon ring, Viton gasket, and 18-8 spring material, identified by manufacturer part number 21-150-09.

Frequently Asked Questions

What is the FLOWSERVE 21-150-09 mechanical seal used for?

The FLOWSERVE 21-150-09 is a single-spring mechanical shaft seal used in industrial pumps and rotating equipment to prevent fluid leakage along a 1 1/2-inch shaft. It is suitable for applications requiring a carbon ring, Viton gasket, and 18-8 spring materials, common in water, chemical, and light hydrocarbon services.

What are the specifications of the FLOWSERVE 21-150-09 mechanical seal?

The FLOWSERVE 21-150-09 mechanical seal has a 1 1/2-inch shaft diameter, 1.13-inch working length, single spring design, carbon ring, Viton gasket, and 18-8 spring material. It is designated as type 21 with manufacturer part number 21-150-09. These specs ensure reliable sealing in standard pump applications.

Where to buy the FLOWSERVE 21-150-09 mechanical seal worldwide?

3G Electric supplies the FLOWSERVE 21-150-09 mechanical seal worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we source and deliver this seal to meet your operational needs.

How to install the FLOWSERVE 21-150-09 mechanical seal?

To install the FLOWSERVE 21-150-09, ensure the shaft and seal chamber are clean and free of debris. Lubricate the Viton gasket and carbon ring with a compatible lubricant, then slide the seal onto the 1 1/2-inch shaft. Follow standard pump manufacturer guidelines for compression setting and avoid damaging the sealing faces during assembly.

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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FLOWSERVE Mechanical Seal: Mechanical Shaft Seal, 21, 1 3/8 in Shaft Dia., 1.13 in Working Lg, 18-8 (MPN 21-137-07)
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FLOWSERVE Mechanical Seal: Mechanical Shaft Seal, 21, 1 1/8 in Shaft Dia., 1.06 in Working Lg, 18-8 (MPN 21-112-17)
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