PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B-421Grease,plug Valve

Flowserve Us Inc. Dba Flowserve Div Flow Control - Oil and Gas Sector · NSN 9150-00-261-8293 · FSC 9150 · No Item Name Available
Verified by PartsTable
NSN 9150-00-261-8293 — this item is cataloged by the U.S. Government under National Stock Number 9150-00-261-8293. Primary manufacturer part number: B-421.
Features
  • Grease,plug Valve — FSC 9150
  • Effective Temp Range Rating: +30.0 TO 275.0 FAHRENHEIT DEGF
  • Basic Ingredient: ALUMINUM SOAP AND PETROLEUM OIL
  • Diameter: 0.375 INCHES IN
  • Service Characteristics: SALT WATER RESISTANT
  • Minimum Dropping Point: 300.0 FAHRENHEIT DEGF
  • Physical Form: STICK
  • 3 verified cross-references
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Grease,plug Valve, cataloged under National Stock Number 9150-00-261-8293, is classified within Federal Supply Class 9150 (No Item Name Available) of the Fuels, Lubricants, Oils, and Waxes group. The primary manufacturer of record is Flowserve Us Inc. Dba Flowserve Div Flow Control - Oil and Gas Sector. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN9150-00-261-8293
Primary Part NumberB-421
Item NameGrease,plug Valve
FSC / FSG9150 / 91 — No Item Name Available
ManufacturerFlowserve Us Inc. Dba Flowserve Div Flow Control - Oil and Gas Sector
StatusACTIVE
Effective Temp Range Rating+30.0 TO 275.0 FAHRENHEIT DEGF
Basic IngredientALUMINUM SOAP AND PETROLEUM OIL
Diameter0.375 INCHES IN
Service CharacteristicsSALT WATER RESISTANT
Minimum Dropping Point300.0 FAHRENHEIT DEGF
Physical FormSTICK
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
2540-00-040-2170B421 INTERCHANGEABLE
Stem
Opw Fueling Components Inc. Div Opw Fueling Components
3455-00-232-902858-10141 INTERCHANGEABLE
Cutter,milling,side
Union Butterfield Corp P O Box 9000 Crystal Lake Il 60039
9150-00-261-8294C-421 INTERCHANGEABLE
Grease,plug Valve
Flowserve Us Inc. Dba Flowserve Div Flow Control - Oil and Gas Sector
9150-00-261-8295D-421 INTERCHANGEABLE
Grease,plug Valve
Flowserve Us Inc. Dba Flowserve Div Flow Control - Oil and Gas Sector
9150-00-261-8296LUBRICANT24 INTERCHANGEABLE
Grease,plug Valve
Acf Industries Inc
5355-00-367-4671B421 INTERCHANGEABLE
Pointer,dial
Dresser, Llc
5998-01-463-9931B421 INTERCHANGEABLE
Circuit Card Assembly
Lockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan
Cross-Reference Index
Part NumberManufacturer
B-421 PRIMARY Flowserve Us Inc. Dba Flowserve Div Flow Control - Oil and Gas Sector (USA)
LUBRICANT24 Acf Industries Inc (USA)
B-421 Btr Valve Sealants Inc (USA)
Related Parts
2540-00-040-2170INTERCHANGEABLE
STEM
B421
3455-00-232-9028INTERCHANGEABLE
CUTTER,MILLING,SIDE
58-10141
9150-00-261-8294INTERCHANGEABLE
GREASE,PLUG VALVE
C-421
9150-00-261-8295INTERCHANGEABLE
GREASE,PLUG VALVE
D-421
9150-00-261-8296INTERCHANGEABLE
GREASE,PLUG VALVE
LUBRICANT24
5355-00-367-4671INTERCHANGEABLE
POINTER,DIAL
B421
5998-01-463-9931INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
B421

Frequently Asked Questions

What is NSN 9150-00-261-8293?

NSN 9150-00-261-8293 is a Grease,plug Valve, manufactured by Flowserve Us Inc. Dba Flowserve Div Flow Control - Oil and Gas Sector, classified under FSC 9150 (No Item Name Available). Status: active.

What are the part numbers for NSN 9150-00-261-8293?

NSN 9150-00-261-8293 has 3 cross-referenced part numbers: B-421 (Flowserve Us Inc. Dba Flowserve Div Flow Control - Oil and Gas Sector), LUBRICANT24 (Acf Industries Inc), B-421 (Btr Valve Sealants Inc).

What NSN replaces 9150-00-261-8293?

There are 7 known substitutes for 9150-00-261-8293: 2540-00-040-2170, 3455-00-232-9028, 9150-00-261-8294 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B-421?

Key specifications for B-421: Effective Temp Range Rating: +30.0 TO 275.0 FAHRENHEIT DEGF; Basic Ingredient: ALUMINUM SOAP AND PETROLEUM OIL; Diameter: 0.375 INCHES IN; Service Characteristics: SALT WATER RESISTANT. 7 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com