National Item Identification Number
01-159-7021
011597021
4820-01-159-7021
4820-01-159-7021
National Stock Number
Item Name
SEAT,VALVE
Federal Supply Class
4820
Description
A replaceable item designed to provide a circular stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see INSERT, ENGINE VALVE SEAT.
Commercial and Government Entity Code (Supplier Data)
53711
53711
Reference Numbers (Part Numbers)
2158954
2158954
2452712
Required Categories
MATERIAL
HARDNESS RATING
SEATING SURFACE SHAPE
TAPER MINOR DIAMETER
TAPER MA
Required Description
RUBBER SILICONE OVERALL
NOT RATED
FLAT
0.654 INCHES NOMINAL
0.940 INCHES NOM