PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6900Valve,relay

Sealco Air Controls Inc · NSN 2990-00-891-8374 · FSC 2990 · No Item Name Available
Verified by PartsTable
NSN 2990-00-891-8374 — this item is cataloged by the U.S. Government under National Stock Number 2990-00-891-8374. Primary manufacturer part number: 6900.
Features
  • Valve,relay — FSC 2990
  • General Characteristics Item Description: SEALCO AIR BRAKES INC,PART NO. 6900NM
  • 3 verified cross-references
  • Primary manufacturer: Sealco Air Controls Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Circuit control and protection
  • Equipment power management
General Description

The Valve,relay, cataloged under National Stock Number 2990-00-891-8374, is classified within Federal Supply Class 2990 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Sealco Air Controls Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2990-00-891-8374
Primary Part Number6900
Item NameValve,relay
FSC / FSG2990 / 29 — No Item Name Available
ManufacturerSealco Air Controls Inc
StatusACTIVE
General Characteristics Item DescriptionSEALCO AIR BRAKES INC,PART NO. 6900NM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
2920-00-035-85876900 INTERCHANGEABLE
Shield Assy,termina
Champion Aerospace Llc
3120-00-097-1706 INTERCHANGEABLE
Bearing,sleeve
5930-00-114-199468S-0133M-001 INTERCHANGEABLE
Switch,reed
Ametek Inc Schutte and Koerting Div
3010-00-317-474814U1032PCADA6900 INTERCHANGEABLE
Gear Assembly,speed Decreaser
Naval Sea Systems Command
5995-00-387-29096900 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Spencer Industries Inc
4730-00-608-25896900 INTERCHANGEABLE
Coupling Half,quick Disconnect
Tuthill Corp Hansen Coupling Div
5960-00-724-7319 INTERCHANGEABLE
Electron Tube
5960-00-727-7858 INTERCHANGEABLE
Electron Tube
4330-01-183-0639P33060600 INTERCHANGEABLE
Parts Kit,fluid Pressure Filter
Edwards Vacuum Llc
2510-01-225-252263386 INTERCHANGEABLE
Shock Absorber,direct Action
Maremont Corp
Cross-Reference Index
Part NumberManufacturer
6900 PRIMARY Sealco Air Controls Inc (USA)
6900NM Sealco Air Controls Inc (USA)
701117 Dresser, Llc (USA)
Related Parts
2920-00-035-8587INTERCHANGEABLE
SHIELD ASSY,TERMINA
6900
3120-00-097-1706INTERCHANGEABLE
BEARING,SLEEVE
5930-00-114-1994INTERCHANGEABLE
SWITCH,REED
68S-0133M-001
3010-00-317-4748INTERCHANGEABLE
GEAR ASSEMBLY,SPEED DECREASER
14U1032PCADA6900
5995-00-387-2909INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
6900
4730-00-608-2589INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
6900
5960-00-724-7319INTERCHANGEABLE
ELECTRON TUBE
5960-00-727-7858INTERCHANGEABLE
ELECTRON TUBE
4330-01-183-0639INTERCHANGEABLE
PARTS KIT,FLUID PRESSURE FILTER
P33060600
2510-01-225-2522INTERCHANGEABLE
SHOCK ABSORBER,DIRECT ACTION
63386
5120-01-230-1509INTERCHANGEABLE
PLIERS,RETAINING RING

Frequently Asked Questions

What is NSN 2990-00-891-8374?

NSN 2990-00-891-8374 is a Valve,relay, manufactured by Sealco Air Controls Inc, classified under FSC 2990 (No Item Name Available). Status: active.

What are the part numbers for NSN 2990-00-891-8374?

NSN 2990-00-891-8374 has 3 cross-referenced part numbers: 6900 (Sealco Air Controls Inc), 6900NM (Sealco Air Controls Inc), 701117 (Dresser, Llc).

What NSN replaces 2990-00-891-8374?

There are 11 known substitutes for 2990-00-891-8374: 2920-00-035-8587, 3120-00-097-1706, 5930-00-114-1994 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6900?

Key specifications for 6900: General Characteristics Item Description: SEALCO AIR BRAKES INC,PART NO. 6900NM; Special Features: AS DIFFERENTIATED BY MAGNETIC PERMEABILITY SHALL BE LESS THAN 1.2 BEFORE FABRICATION AND NOT GREATER THAN 2.0 AFTER FABRICATION AS MEASURED IN A 200 OERSTED FIELD. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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