PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2625Seat Ring

Spence Engineering Co Inc Dba Nicholson Steam Trap · NSN 4820-00-957-5512 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-957-5512 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-957-5512. Primary manufacturer part number: 2625.
Features
  • Seat Ring — FSC 4820
  • 1 verified cross-reference
  • Primary manufacturer: Spence Engineering Co Inc Dba Nicholson Steam Trap
Applications
  • Flow control in piping systems
  • Water treatment infrastructure
  • Industrial process control
General Description

The Seat Ring, cataloged under National Stock Number 4820-00-957-5512, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Spence Engineering Co Inc Dba Nicholson Steam Trap. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameSeat Ring
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersSpence Engineering Co Inc Dba Nicholson Steam Trap (CAGE 82483)
Technical Specifications
ParameterValue
NSN4820-00-957-5512
Primary Part Number2625
Item NameSeat Ring
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerSpence Engineering Co Inc Dba Nicholson Steam Trap
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
2010-00-213-04893373463 INTERCHANGEABLE
Collar,ring
Eaton Corporation Dba Airflex Div Div Airflex
5935-00-258-441226-25 INTERCHANGEABLE
Connector,plug,electrical
Entron Industries Limited Partnership Dba Entron Industries Property Div
5915-00-333-9905 INTERCHANGEABLE
Network,pulse Forming
6250-00-349-33778770675 INTERCHANGEABLE
Lampholder
Army, United States Department of the Dba Watervliet Arsenal Div Business Development
5935-00-504-4713 INTERCHANGEABLE
Adapter,connector
5340-00-530-5342394074PC6 INTERCHANGEABLE
Bumper
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
6640-00-556-67066886-87L INTERCHANGEABLE
Jar,bell
Corning Glass Works
5961-00-730-8818 INTERCHANGEABLE
Transistor
5365-00-813-2030 INTERCHANGEABLE
Shim
6685-00-814-5691J0640 INTERCHANGEABLE
Gage,pressure,dial Indicating
Bellofram Corporation
Cross-Reference Index
Part NumberManufacturer
2625 PRIMARY Spence Engineering Co Inc Dba Nicholson Steam Trap (USA)
Related Parts
2010-00-213-0489INTERCHANGEABLE
COLLAR,RING
3373463
5935-00-258-4412INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
26-25
5915-00-333-9905INTERCHANGEABLE
NETWORK,PULSE FORMING
6250-00-349-3377INTERCHANGEABLE
LAMPHOLDER
8770675
5935-00-504-4713INTERCHANGEABLE
ADAPTER,CONNECTOR
5340-00-530-5342INTERCHANGEABLE
BUMPER
394074PC6
6640-00-556-6706INTERCHANGEABLE
JAR,BELL
6886-87L
5961-00-730-8818INTERCHANGEABLE
TRANSISTOR
5365-00-813-2030INTERCHANGEABLE
SHIM
6685-00-814-5691INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
J0640
5910-01-099-4498INTERCHANGEABLE
CAPACITOR
2625
6680-01-174-6276INTERCHANGEABLE
REGULATOR,PRESSURE,MEDICAL GAS A

Frequently Asked Questions

What is NSN 4820-00-957-5512?

NSN 4820-00-957-5512 is a Seat Ring, manufactured by Spence Engineering Co Inc Dba Nicholson Steam Trap, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-957-5512?

NSN 4820-00-957-5512 has 1 cross-referenced part number: 2625 (Spence Engineering Co Inc Dba Nicholson Steam Trap).

What NSN replaces 4820-00-957-5512?

There are 12 known substitutes for 4820-00-957-5512: 2010-00-213-0489, 5935-00-258-4412, 5915-00-333-9905 and 9 more. Verify interchangeability with system specifications before substitution.

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