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FLOWSERVE Shaft Seal: Mechanical Shaft Seal, 21, 5/8 in Shaft Dia. - Mechanical Shaft Seals
FLOWSERVEMechanical Shaft Seals

FLOWSERVE Shaft Seal: Mechanical Shaft Seal, 21, 5/8 in Shaft Dia.

The FLOWSERVE Shaft Seal is a mechanical shaft seal designated as Type 21, featuring a carbon ring, a single 18-8 spring, and a Viton gasket. It is designed for a 5/8 in shaft diameter and supports a maximum shut-off…

SKU 3G-OTH-95055

Brand
FLOWSERVE
Item
Shaft Seal: Mechanical Shaft Seal, 21, 5/8 in Shaft Dia.
Category
Mechanical Shaft Seals
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Technical Specifications

FLOWSERVE
Manufacturer Part Number
21-062-23
Type
21
Shaft Dia.
5/8 in
Spring Type
Single Spring
Ring Material
Carbon
Gasket Material
Viton
Spring Material
18-8
Seal Type Designation
21
Shut Off Pressure (Max)
250 psi
View Full Spec Sheet

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

Product Description

The FLOWSERVE Shaft Seal is a mechanical shaft seal designated as Type 21, featuring a carbon ring, a single 18-8 spring, and a Viton gasket. It is designed for a 5/8 in shaft diameter and supports a maximum shut-off pressure of 250 psi.

Frequently Asked Questions

What is the FLOWSERVE Shaft Seal Type 21 used for?

The FLOWSERVE Shaft Seal Type 21 is a mechanical shaft seal used in rotating equipment such as pumps and mixers to prevent fluid leakage along the shaft. It is suitable for industrial applications requiring a reliable seal for a 5/8 in shaft diameter with a Viton gasket for chemical resistance.

What are the specifications of the FLOWSERVE Shaft Seal 21-062-23?

The FLOWSERVE Shaft Seal 21-062-23 is a Type 21 mechanical seal with a carbon ring, single 18-8 spring, and Viton gasket. It fits a 5/8 in shaft diameter and has a maximum shut-off pressure of 250 psi. The manufacturer part number is 21-062-23.

Where to buy the FLOWSERVE Shaft Seal 21-062-23 worldwide?

You can source the FLOWSERVE Shaft Seal 21-062-23 worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to install a FLOWSERVE mechanical shaft seal Type 21?

To install a FLOWSERVE mechanical shaft seal Type 21, ensure the shaft and housing bore are clean and free of burrs. Lubricate the seal components lightly, press the seal onto the shaft, and secure the gland evenly. Follow the manufacturer's instructions for proper alignment and torque settings.

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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