RUBBER WASHER HIGH GRADE 10 PACK. 1" THK X 1-3/8" OD X 3/8" ID  100% MANUFACTURER IN THE USA.. 

CNC LATHE CUT IN THE USA.
 
SIZE:
Thickness: 1"
Outside Diameter: 1-3/8"
Inside Diameter: 3/8"
PCS PER SET:  10

Material features:
 Ozone,UV,oil resistant, chemical,sea water resistant. oil resistant 

Material Specs:

Specs:
Durometer: 70 +/-5
PSI: 1100 
TEMP: -20F TO 230 F
Elongation:300%

Need a custom size? let us know we can help, we can cut any size washer in many different materials rubbers & plastics.