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Worldwide distributor of NSN parts and consumables located in the USA.

Valve Seat

Model / MPN: 3870-18 | NSN: 4820-00-297-1880
ITAR Registered seal

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
4820-00-297-1880
Sold in multiples of
1 EA
DEMIL
NO
Overall Height
1.740 inches
Body Outside Diameter
4.120 inches
Body Inside Diameter
3.750 inches
Seat Radius
0.062 inches
Seating Surface Shape
Flat
Material
Rubber buna n
Style Designator
Plain
Solicitations
Solicitation Description Qty UOM Close Date
SPE7MC16TJ433 Seat, Valve 9 EA 08/11/2016
SPE7MC17T2087 Seat, Valve 9 EA 11/07/2016
SPE7MC17T3671 Seat, Valve 9 EA 11/18/2016
SPE7MC17TH340 Seat, Valve 16 EA 05/01/2017
SPE7MC17TQ102 Seat, Valve 9 EA 07/17/2017
SPE7MC17TP431 Seat, Valve 9 EA 07/10/2017
SPE7MC19T160Q Seat, Valve 9 EA 09/03/2019

Pricing and Availability

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3870-18 Cross Reference
  • 52730A166
  • 730A166
  • 52730A166
  • 3870-18A
  • 3870-18K
  • 1006677