Type 31

Pac-seal Type 21 /31 Replacement

Universal elastomer bellows mechanical seals Type 31 series can be used in wide range of operating conditions such as slurry, Oil, corrosive chemicals applications. It is frequently used by Sewage pumps,Coolant Pumps,Drainage Pumps and Food processing industries.

Features
  Unique design in the hexagonal torque drive   eliminates stresses on the elastomer bellows
  Flexibility design in the elastomer bellows can reduce shaft play and run out
  Single seal、unbalanced、single spring
 Good interchange ability, Type31U Dimensional data conform with US standard,Type31K conform   with UK standard
  Available in metric and inch sizes
 Type31 series can also be used as double face mechanical seals in two sets arrangement
 

Standard Stationary Seat:T1NG,T1N

T1NG equivalent to John Crane NG

T1N equivalent to John Crane N

 

Alternatives Stationary Seat:T6WG,T6W

T6WG equivalent to John Crane WG

T6W equivalent to John Crane W

Combination Materials
 Rotary Face 
    Carbon graphite resin impregnated Ak 
    Silicon carbide (RBSIC) O
 Stationary Seat 
    Aluminium oxide(Ceramic) B
    Silicon carbide (RBSIC) O
    Tungsten carbide W1
 Auxiliary Seal 
    Nitrile-Butadiene-Rubber (NBR) P
    Fluorocarbon-Rubber (Viton) V
    Ethylene-Propylene-Diene (EPDM) E
 Spring
    Stainless Steel (SUS304) F
 Metal Parts
    Stainless Steel (SUS304) F

Detailed parameters

es_ESES

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