Fits the following Pump Models
JET 100M,
DP100M
JET151M 
DP151M,
K30-70,
K30-100,
K35-100, 
40, K45-50, JET251M,
KH40-100, KH35-100, K12-200M,
K14-400M, K36-100M, K55-50M

MATERIALS
Carbon vs Ceramic
Nitrile Elastomers