FLOWSERVE Mechanical Seal: Mechanical Shaft Seal, 21, 3/4 in Shaft Dia., 0.88 in Working Lg
The FLOWSERVE Mechanical Shaft Seal, designated Type 21, is a single-spring mechanical seal with a carbon ring and Buna gasket. It features an 18-8 spring material and is designed for a 3/4-inch shaft diameter with a…
SKU 3G-OTH-95236
Also listed as: 2107504 · 21 075 04
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.
Need installation or engineering help?
Ask a question
Product Description
The FLOWSERVE Mechanical Shaft Seal, designated Type 21, is a single-spring mechanical seal with a carbon ring and Buna gasket. It features an 18-8 spring material and is designed for a 3/4-inch shaft diameter with a 0.88-inch working length (MPN 21-075-04).
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 a rotating shaft. It is suitable for water, light chemicals, and general process applications where a single-spring, carbon-versus-ceramic face seal is required.
What are the specifications of the FLOWSERVE 21-075-04 mechanical seal?
The FLOWSERVE 21-075-04 is a Type 21 mechanical shaft seal with a 3/4-inch shaft diameter and 0.88-inch working length. It features a carbon ring, Buna gasket, and 18-8 spring material with a single-spring design. The manufacturer part number is 21-075-04.
Where to buy FLOWSERVE mechanical seals worldwide?
You can source FLOWSERVE mechanical seals, including the Type 21, through 3G Electric. As a global industrial equipment distributor since 1990, 3G Electric handles full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.
How to install a FLOWSERVE Type 21 mechanical seal?
To install a FLOWSERVE Type 21 mechanical seal, ensure the shaft and housing bore are clean and free of burrs. Lubricate the seal faces and gasket with a compatible fluid. Slide the seal onto the shaft, seat the stationary face, and secure the set screw. Follow pump manufacturer torque specs.
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.
