Valve Seat

Model / MPN: 5121B | NSN: 4820-00-623-8754

A replaceable item designed to provide a 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.

Product Details

NATO Stock Number

4820-00-623-8754

Sold in multiples of

1 EA

DEMIL

Flange Diameter

0.859 inches

Body Outside Diameter

Between 0.361 inches and 0.362 inches

Body Inside Diameter

0.219 inches

Flange Seat To Disk End Height

0.125 inches

Under Flange Height

0.438 inches

Seal Accommodation Type

Recessed

Hardness Rating

325.0 brinell standard body and 350.0 brinell standard body

Seating Surface Shape

Flat

Material

Steel

Material Specification

Qq-s-763, class 410 federal specification single material response

Style Designator

Plain flanged

5121B Series Parts

5121B

Pricing and Availability

Send us a request for quote using the form below. Our team will contact you with an up to date pricing and availability quote ASAP.

Certified Quality Assurance

ISO 9001:2015 + AS9120B
Counterfeit Parts Prevention
100% Product Inspections
7 Year Record Retention
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5121B Cross Reference

5121B
3287223PC237
3298029PC459
200103UPC237
200103UPC237
200110AFPC459