Description
FLUITEN Standard Mechanical Single pusher Seals BM8S – Designed for high mechanical stress , with a choice of fixed or floating auxiliary bush: 1CW-FX; 1CW-FL – Maximum pressure: 20 bar.
Key Technical Specifications:
| DIAMETER | SPEED | PRESSURE | TEMPERATURE |
|---|---|---|---|
| 20-110 (mm) | 0-20 (m/sec) | 0-20 (bar g) | -40 – 176 (°C) |
Why Choose FLUITEN BM8S?
The BM8S is a balanced , single- pusher seal meeting API 682 4th edition standards , designed for high mechanical stress applications. It offers fixed or floating auxiliary bushings , making it well-suited for hot water or industrial pump retrofits.
Key Technical Specifications
Seal Type: API 682-compliant , balanced single pusher
Stationary Ring Options: Reaction-bonded SiC (U41) , Sintered SiC (U31) , Tungsten Carbide (K21)
Rotating Ring Options: Antimony-impregnated graphite (Z11) , Inserted SiC (U32) , Inserted Tungsten Carbide (K22)
Elastomer Seals: Fluoroelastomer (FKM) , EPDM , FFKM , or energized PTFE
Bushing: Fixed or floating graphite auxiliary bush (Z3)
Springs: Hastelloy multi-spring pack located outside process fluid
Drive System: Fluiten’s triple drive-lug rotor for enhanced resistance to vibration and misalignment
Flange & Sleeve: Engineered per pump requirements; ideal for ASME B73.1/B72.2 horizontal and vertical pumps
Sealing Faces: Balanced design with pusher flange and mount
Injection Ports: Included for flush , drain , or barrier fluid systems
Typical Applications
ANSI B73.1/B72.2 pumps in industrial , chemical , and water applications
Services involving hot water , vibration , or slight misalignment
Retrofits requiring reliable pusher seals with auxiliary bush options
Additional Features
Triple drive-lug rotor maintains rotation despite wear or misalignment
Auxiliary bush (fixed or floating) for optimized leakage control or flush integration
pusher design streamlines installation and maintenance
Customizable flange and sleeve for pump retrofit
Engineered to exceed API limits when validated by Fluiten
The FLUITEN BM8S is a rugged , API-compliant pusher seal with triple drive-lug design , built to withstand vibration , misalignment , and hot-water conditions. Its balanced build , flexible bushing options , and straightforward pusher setup make it the ideal choice for durable , low-maintenance sealing in demanding pump environments.
