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FLOWSERVE Replacement Pump Shaft Seal: Mechanical Shaft Seal, 21, 1/2 in Shaft Dia. - Mechanical Shaft Seals
FLOWSERVEMechanical Shaft Seals

FLOWSERVE Replacement Pump Shaft Seal: Mechanical Shaft Seal, 21, 1/2 in Shaft Dia.

The FLOWSERVE Replacement Pump Shaft Seal is a mechanical shaft seal with a single spring design, featuring a rubber gasket and stainless steel spring. Designated as Seal Type 21, it has a 1/2 in shaft diameter and…

SKU 3G-OTH-94944

Brand
FLOWSERVE
Item
Replacement Pump Shaft Seal: Mechanical Shaft Seal, 21, 1/2 in Shaft Dia.
Category
Mechanical Shaft Seals
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Technical Specifications

FLOWSERVE
Manufacturer Part Number
21-050-43
Type
21, Cooking Oil
Shaft Dia.
1/2 in
Spring Type
Single Spring
Gasket Material
Rubber
Spring Material
Stainless Steel
Seal Type Designation
21
Replaces Grainger Seal
1R301
View Full Spec Sheet

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

Product Description

The FLOWSERVE Replacement Pump Shaft Seal is a mechanical shaft seal with a single spring design, featuring a rubber gasket and stainless steel spring. Designated as Seal Type 21, it has a 1/2 in shaft diameter and is suitable for use with cooking oil. This seal replaces Grainger Seal 1R301 and is identified by manufacturer part number 21-050-43.

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 Replacement Pump Shaft Seal: Mechanical Shaft Seal, 21, 1/2 in Shaft Dia., Cooking Oil (MPN 21-050-04). Key specifications — Brand: FLOWSERVE; Gasket Material: Rubber; Spring Material: Stainless Steel; Spring Type: Single Spring; Seal Type Designation: 21; Replaces Grainger Seal: 5P380.
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FLOWSERVE Replacement Pump Shaft Seal: Mechanical Shaft Seal, 21, 5/8 in Shaft Dia., Cooking Oil (MPN 21-062-19). Key specifications — Brand: FLOWSERVE; Gasket Material: Rubber; Spring Material: Stainless Steel; Spring Type: Single Spring; Seal Type Designation: 21.
FLOWSERVE Replacement Pump Shaft Seal: Mechanical Shaft Seal, 21, 5/8 in Shaft Dia., Cooking Oil (MPN 21-062-175). Key specifications — Brand: FLOWSERVE; Gasket Material: Rubber; Spring Material: 316 Stainless Steel; Spring Type: Single Spring; Seal Type Designation: 21.
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FLOWSERVE Replacement Pump Shaft Seal: Mechanical Shaft Seal, 21, 5/8 in Shaft Dia., Cooking Oil (MPN 21-062-175). Key specifications — Brand: FLOWSERVE; Gasket Material: Rubber; Spring Material: 316 Stainless Steel; Spring Type: Single Spring; Seal Type Designation: 21.
FLOWSERVE Replacement Pump Shaft Seal: Mechanical Shaft Seal, 21, 1 in Shaft Dia., Cooking Oil (MPN 21-100-04). Key specifications — Brand: FLOWSERVE; Gasket Material: Rubber; Spring Material: Stainless Steel; Spring Type: Single Spring; Seal Type Designation: 21.
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FLOWSERVE Replacement Pump Shaft Seal: Mechanical Shaft Seal, 21, 1 3/8 in Shaft Dia., Cooking Oil (MPN 21-137-04). Key specifications — Brand: FLOWSERVE; Gasket Material: Rubber; Spring Material: Stainless Steel; Spring Type: Single Spring; Seal Type Designation: 21.
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