FLOWSERVE Type 21 Mechanical Shaft Seal
The FLOWSERVE Mechanical Shaft Seal, designated as Type 21 (MPN 21-187-14), is a single-spring mechanical seal designed for a 1 7/8 in shaft diameter with a 1.38 in working length. It features a carbon ring, Buna…
SKU 3G-OTH-96620
Also listed as: 2118714 · 21 187 14
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
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Product Description
The FLOWSERVE Mechanical Shaft Seal, designated as Type 21 (MPN 21-187-14), is a single-spring mechanical seal designed for a 1 7/8 in shaft diameter with a 1.38 in working length. It features a carbon ring, Buna gasket, and 18-8 spring material.
Frequently Asked Questions
What is the FLOWSERVE Type 21 mechanical seal used for?
The FLOWSERVE Type 21 mechanical shaft seal is used in industrial pumps and rotating equipment to prevent fluid leakage along the shaft. It is suitable for water, light chemicals, and general process fluids in applications such as HVAC, water treatment, and light industrial pumping systems.
What are the specifications of the FLOWSERVE 21-187-14 mechanical seal?
The FLOWSERVE 21-187-14 mechanical seal has a 1 7/8 in shaft diameter, 1.38 in working length, single spring design, carbon ring, Buna gasket, and 18-8 spring material. It is designated as Type 21 and manufactured by FLOWSERVE.
Where to buy FLOWSERVE mechanical seals worldwide?
3G Electric supplies FLOWSERVE mechanical seals worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for pricing and lead time on the FLOWSERVE Type 21 seal model 21-187-14.
How to install a FLOWSERVE Type 21 mechanical seal?
To install a FLOWSERVE Type 21 mechanical seal, ensure the shaft and stuffing box are clean and free of burrs. Lubricate the seal faces and gasket with a compatible fluid, then slide the seal onto the shaft. Secure the set screw and verify the working length of 1.38 in before reassembling the pump.
Used in
Common applications for FLOWSERVEFLOWSERVE 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.
