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> Utex mechanical seal size 1-3/4",mb-i w/aflas,elastomer
Utex mechanical seal size 1-3/4",mb-i w/aflas,elastomer
THE UTEX SEAL THAT DOUBLES YOUR OPTIONS
The compact and versatile MB-I can be used as either a Stationary or Rotating Bellows Seal. The MB-I is supplied in its standard configuration as a Stationary Bellows assembly. The mutually interchangeable bellows and seat allow easy, on-site conversion to a rotary bellows design.
The bellows design provides even distribution of load around the entire circumference of the seal face. In addition, the need for dynamic o-rings, with associated frictional drag and wear, is eliminated. The extremely low mass of the face and bellows assembly improves face tracking characteristics during operation.
The MB-I's unique multi-ported flushing system uses a single gland connection that enters into an annular cavity. The flush medium flows around this cavity and exits through evenly spaced ports, traveling axially over the seal faces. This provides full 360 lubrication and cooling while protecting the faces from abrasive particles.
The MB-I fits ANSI pumps without modification. Temperature range is from -75 F to +400 F (-60 C to +204 C) depending on the o-ring material chosen. Maximum pressure is 300 psi (20 bar), with speeds up to 4500 fpm (23 m/s).
Hastelloy C-276 bellows core. 316 SS standard end fittings, Hastelloy C available
Available - Hastelloy C and Alloy 20.
Available - EPDM, Neoprene, Nitrile, Chemtex, Aflas, Chemraz, Kalrez, PTFE, and encapsulated Viton.
-75 F to +400 F (-60 C to +204 C) depending on o-ring material chosen.
Vent/Drain and flush connection sizes:
" N.P.T. for seal sizes 1" thru 1 3/8"
3/8" N.P.T. for seal sizes 1 " thru 2 "
1. Unitized construction of welded bellows assembly.
1. Fewer parts, even face loading, uniform linear spring action.
2. Fretting corrosion is eliminated since the O-rings are not required to flex or roll to maintain sealing; the seals cannot become immobilized if the O-rings swell or char when exposed to aggressive solvent or heat; Viton encapsulated O-rings can be used throughout the seal.
3. Bellow's core is Hastalloy C-276 as standard.
3. Improved stress corrosion resistance, wider range of chemical resistance.
4. Flush is directed parallel to the stuffing box bore and provides 360 degree face flushing, thus preventing thermal face distortion.
5. Self-aligning, adjusts for stuffing box misalignment without bellows fatigue, requires no vibration dampeners which can cause face hang-up or fretting, eliminates viscous drag on the bellows, can be used in more viscous products.
