FLOWSERVE Type 21 Mechanical Shaft Seal
The FLOWSERVE Mechanical Shaft Seal, type designation 21, is a single-spring mechanical seal with a carbon ring and a Viton gasket. It is designed for a 1 1/8-inch shaft diameter and has a 1.06-inch working length…
SKU 3G-OTH-96641
Also listed as: 2111217 · 21 112 17
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.
Compliance & shipping
- Hazardous material
- Not classified as hazardous
- California Prop 65 warning
- No warning recorded
- Licence required
- No licence required
- Safety Data Sheet
- Not available
- Special shipping
- Ships under standard freight
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Product Description
The FLOWSERVE Mechanical Shaft Seal, type designation 21, is a single-spring mechanical seal with a carbon ring and a Viton gasket. It is designed for a 1 1/8-inch shaft diameter and has a 1.06-inch working length, with spring and hardware made from 18-8 stainless steel. This seal is identified by manufacturer part number 21-112-17.
Frequently Asked Questions
What is the FLOWSERVE 21-112-17 mechanical seal used for?
The FLOWSERVE 21-112-17 is a single-spring mechanical shaft seal designed to prevent leakage along rotating shafts in pumps and rotating equipment. It is commonly used in industrial applications such as water treatment, chemical processing, and general fluid handling where a carbon ring and Viton gasket provide reliable sealing.
What are the specifications of the FLOWSERVE 21 mechanical seal?
The FLOWSERVE 21 mechanical seal has a 1 1/8 in shaft diameter, 1.06 in working length, single spring design, carbon ring, Viton gasket, and 18-8 stainless steel spring and hardware. It is type designation 21 with manufacturer part number 21-112-17.
Where to buy FLOWSERVE mechanical seals worldwide?
3G Electric supplies FLOWSERVE mechanical seals like the 21-112-17 to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this seal or other FLOWSERVE shaft seal models.
How to install a FLOWSERVE single-spring mechanical seal?
Ensure the shaft and seal housing are clean and free of debris. Lubricate the seal faces and gasket with a compatible fluid. Carefully slide the seal onto the shaft, taking care not to damage the carbon face. Tighten set screws evenly per manufacturer torque specs. Always follow FLOWSERVE installation instructions for the 21 series.
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.
