Head and Seat Types

Material Code
The Material Code is a five-character code, such as “BCFZF” which is defined by the following parameters. The first character specifies the Elastomer type, the second character specifies the washer type, etc.

HEAD TYPES

Elastomers
B. Buna 
N. Neoprene
Q. EPR
V. Viton AFLAS®

Washers
A. Bronze
C. Carbon
H. Glass Filled TFE
L. Silicon Carbide
M. Molded Plastic
S. Tooled Steel
W. Micarta®
Z. Tungsten Carbide

Metal Parts
D. Brass
E. Monel®
F. Stainless Steel
P. Plated Steel

 

 Seats
G. Case Iron
K. Ni-Resist
L. Silicon Carbide
J. Ceramic
S. Tooled Steel
Z. Tungsten Carbide

 

Springs
E. Monel®
F. Stainless Steel
P. Plated Steel
Type A Type B Type C Type D Type E
Type A Type B Type C Type D Type E
Type J Type K Type N Type Q Type R
Type J Type K Type N Type Q Type R
Type S Type T Type U Type V  
Type S Type T Type U

Type V

 

  
SEAT TYPES
Seat 1 Seat 2 Seat 3 Seat 5 Seat 8
1. 2. 3. 5. 8.
Seat 9 Seat 11 Seat 14  Seat 17   Seat 20
9. 11. 14. 17. 20.
 Seat 25  Seat 27  Seat 28  Seat 30  
25. 27. 28. 30.