We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

FLOWSERVE Mechanical Seal: Mechanical Shaft Seal, 51, 7/8 in Shaft Dia., 1.38 in Working Lg - Mechanical Shaft Seals
FLOWSERVEMechanical Shaft Seals

FLOWSERVE Mechanical Seal: Mechanical Shaft Seal, 51, 7/8 in Shaft Dia., 1.38 in Working Lg

The FLOWSERVE Mechanical Shaft Seal, type 51, is a single-spring mechanical seal with a carbon ring and Buna gasket. It features a 316 stainless steel spring and is designed for a 7/8-inch shaft diameter with a…

SKU 3G-OTH-96835

Also listed as: 5108704 · 51 087 04

Brand
FLOWSERVE
Item
Mechanical Seal: Mechanical Shaft Seal, 51, 7/8 in Shaft Dia., 1.38 in Working Lg
Category
Mechanical Shaft Seals
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

FLOWSERVE
Manufacturer Part Number
51-087-04
Type
51, 316
Shaft Dia.
7/8 in
Working Lg
1.38 in
Spring Type
Single Spring
Ring Material
Carbon
Gasket Material
Buna
Spring Material
316
Seal Type Designation
51

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The FLOWSERVE Mechanical Shaft Seal, type 51, is a single-spring mechanical seal with a carbon ring and Buna gasket. It features a 316 stainless steel spring and is designed for a 7/8-inch shaft diameter with a 1.38-inch working length. This seal is identified by manufacturer part number 51-087-04.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the FLOWSERVE 51-087-04 mechanical seal used for?

The FLOWSERVE 51-087-04 is a single-spring mechanical shaft seal designed to prevent leakage along rotating shafts in pumps and mixers. It suits applications requiring a carbon ring and Buna gasket, with a 7/8-inch shaft diameter and 1.38-inch working length.

What are the specifications of the FLOWSERVE 51-087-04 mechanical seal?

The FLOWSERVE 51-087-04 mechanical seal has a 7/8-inch shaft diameter, 1.38-inch working length, single-spring design, carbon ring, Buna gasket, and 316 stainless steel spring. It is type 51 with manufacturer part number 51-087-04.

Where to buy the FLOWSERVE 51-087-04 mechanical seal worldwide?

3G Electric supplies the FLOWSERVE 51-087-04 mechanical seal worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time on this genuine FLOWSERVE part.

How to install the FLOWSERVE 51-087-04 mechanical seal?

Install the FLOWSERVE 51-087-04 by carefully sliding the seal assembly onto a clean, lubricated shaft. Ensure the carbon ring face mates squarely with the stationary seat. Follow pump manufacturer guidelines for proper compression and alignment to avoid damage.

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
FLOWSERVE Mechanical Seal: Mechanical Shaft Seal, 51, 3/4 in Shaft Dia., 1.31 in Working Lg, 316 (MPN 51-075-04)
FLOWSERVE
FLOWSERVE Mechanical Seal: Mechanical Shaft Seal, 51, 3/4 in Shaft Dia., 1.31 in Working Lg, 316 (MPN 51-075-04)
FLOWSERVE Mechanical Seal: Mechanical Shaft Seal, 51, 1 3/8 in Shaft Dia., 1.69 in Working Lg, 316 (MPN 51-137-04)
FLOWSERVE
FLOWSERVE Mechanical Seal: Mechanical Shaft Seal, 51, 1 3/8 in Shaft Dia., 1.69 in Working Lg, 316 (MPN 51-137-04)
FLOWSERVE Mechanical Seal: Mechanical Shaft Seal, 51, 1 1/8 in Shaft Dia., 1.63 in Working Lg, 316 (MPN 51-112-04)
FLOWSERVE
FLOWSERVE Mechanical Seal: Mechanical Shaft Seal, 51, 1 1/8 in Shaft Dia., 1.63 in Working Lg, 316 (MPN 51-112-04)
FLOWSERVE Mechanical Seal: Mechanical Shaft Seal, 51, 1 1/2 in Shaft Dia., 1.69 in Working Lg, 316 (MPN 51-150-04)
FLOWSERVE
FLOWSERVE Mechanical Seal: Mechanical Shaft Seal, 51, 1 1/2 in Shaft Dia., 1.69 in Working Lg, 316 (MPN 51-150-04)
FLOWSERVE Mechanical Seal: Mechanical Shaft Seal, 51, 1 7/8 in Shaft Dia., 2.13 in Working Lg, 316 (MPN 51-187-04)
FLOWSERVE
FLOWSERVE Mechanical Seal: Mechanical Shaft Seal, 51, 1 7/8 in Shaft Dia., 2.13 in Working Lg, 316 (MPN 51-187-04)
FLOWSERVE Mechanical Seal: Mechanical Shaft Seal, 51, 1 3/4 in Shaft Dia., 2 in Working Lg, 316 (MPN 51-175-04)
FLOWSERVE
FLOWSERVE Mechanical Seal: Mechanical Shaft Seal, 51, 1 3/4 in Shaft Dia., 2 in Working Lg, 316 (MPN 51-175-04)

More from FLOWSERVE

View all FLOWSERVE parts
FLOWSERVE Replacement Pump Shaft Seal: Mechanical Shaft Seal, 21, 1/2 in Shaft Dia., Cooking Oil (MPN 21-050-43)
FLOWSERVE
FLOWSERVE Replacement Pump Shaft Seal: Mechanical Shaft Seal, 21, 1/2 in Shaft Dia., Cooking Oil (MPN 21-050-43)
FLOWSERVE Unitized Rotary Replacement Pump Shaft Seal: Mechanical Shaft Seal, 16, 3/4 in Shaft Dia. (MPN 16-075-07)
FLOWSERVE
FLOWSERVE Unitized Rotary Replacement Pump Shaft Seal: Mechanical Shaft Seal, 16, 3/4 in Shaft Dia. (MPN 16-075-07)
FLOWSERVE Narrow Cross-section Replacement Pump Shaft Seal: Mechanical Shaft Seal, 51, Single Spring (MPN 51-175-05)
FLOWSERVE
FLOWSERVE Narrow Cross-section Replacement Pump Shaft Seal: Mechanical Shaft Seal, 51, Single Spring (MPN 51-175-05)
FLOWSERVE Shaft Seal: Mechanical Shaft Seal, 21, 1 1/4 in Shaft Dia., Cooking Oil, Single Spring (MPN 21-125-04)
FLOWSERVE
FLOWSERVE Shaft Seal: Mechanical Shaft Seal, 21, 1 1/4 in Shaft Dia., Cooking Oil, Single Spring (MPN 21-125-04)
FLOWSERVE Replacement Pump Shaft Seal: Mechanical Shaft Seal, 21, 3/4 in Shaft Dia., Cooking Oil (MPN 21-075-98)
FLOWSERVE
FLOWSERVE Replacement Pump Shaft Seal: Mechanical Shaft Seal, 21, 3/4 in Shaft Dia., Cooking Oil (MPN 21-075-98)
FLOWSERVE Unitized Rotary Replacement Pump Shaft Seal: Mechanical Shaft Seal, 16, 5/8 in Shaft Dia. (MPN 16-062-06)
FLOWSERVE
FLOWSERVE Unitized Rotary Replacement Pump Shaft Seal: Mechanical Shaft Seal, 16, 5/8 in Shaft Dia. (MPN 16-062-06)
FLOWSERVE Narrow Cross-section Replacement Pump Shaft Seal: Mechanical Shaft Seal, 51, Single Spring (MPN 51-112-05)
FLOWSERVE
FLOWSERVE Narrow Cross-section Replacement Pump Shaft Seal: Mechanical Shaft Seal, 51, Single Spring (MPN 51-112-05)
FLOWSERVE Unitized Rotary Replacement Pump Shaft Seal: Mechanical Shaft Seal, 16, 5/8 in Shaft Dia. (MPN 16-062-11)
FLOWSERVE
FLOWSERVE Unitized Rotary Replacement Pump Shaft Seal: Mechanical Shaft Seal, 16, 5/8 in Shaft Dia. (MPN 16-062-11)