PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

C-421Grease,plug Valve

Flowserve Us Inc. Dba Flowserve Div Flow Control - Oil and Gas Sector · NSN 9150-00-261-8294 · FSC 9150 · No Item Name Available
Verified by PartsTable
NSN 9150-00-261-8294 — this item is cataloged by the U.S. Government under National Stock Number 9150-00-261-8294. Primary manufacturer part number: C-421.
Features
  • Grease,plug Valve — FSC 9150
  • Effective Temp Range Rating: +30.0 TO 275.0 FAHRENHEIT DEGF
  • Basic Ingredient: PETROLEUM OIL AND ALUMINUM SOAP
  • Minimum Dropping Point: 300.0 FAHRENHEIT DEGF
  • Diameter: 0.500 INCHES IN
  • Service Characteristics: SALT WATER RESISTANT
  • Physical Form: STICK
  • 6 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 9150-00-261-8294, 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 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN9150-00-261-8294
Primary Part NumberC-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 IngredientPETROLEUM OIL AND ALUMINUM SOAP
Minimum Dropping Point300.0 FAHRENHEIT DEGF
Diameter0.500 INCHES IN
Service CharacteristicsSALT WATER RESISTANT
Physical FormSTICK
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
9150-00-261-8293B-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
3895-00-424-0576 INTERCHANGEABLE
Shaft,pulley
2920-00-455-5414353 INTERCHANGEABLE
Spark Plug
Allied-Signal Inc Autolite Div
5961-00-948-9231C421 INTERCHANGEABLE
Semiconductor Device,diode
Howell Instruments, Inc. Dba Howell Instruments Inc
5315-01-230-3699 INTERCHANGEABLE
Pin,grooved,headless
5999-01-609-2837C4-2-1 INTERCHANGEABLE
Control Unit,specia
Carlisle & Finch Co
Cross-Reference Index
Part NumberManufacturer
9150PL1394283 Jednolity Indeks Materialowy - Uniform Material Index (POL)
C-421 Btr Valve Sealants Inc (USA)
C-421 PRIMARY Flowserve Us Inc. Dba Flowserve Div Flow Control - Oil and Gas Sector (USA)
NORDSTROM 421 SEALANT Flowserve Corporation Div Flowserve Us Inc (USA)
LUBRICANT 24 Acf Industries Inc (USA)
9150PL1374688 Jednolity Indeks Materialowy - Uniform Material Index (POL)
Related Parts
9150-00-261-8293INTERCHANGEABLE
GREASE,PLUG VALVE
B-421
9150-00-261-8295INTERCHANGEABLE
GREASE,PLUG VALVE
D-421
9150-00-261-8296INTERCHANGEABLE
GREASE,PLUG VALVE
LUBRICANT24
3895-00-424-0576INTERCHANGEABLE
SHAFT,PULLEY
2920-00-455-5414INTERCHANGEABLE
SPARK PLUG
353
5961-00-948-9231INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
C421
5315-01-230-3699INTERCHANGEABLE
PIN,GROOVED,HEADLESS
5999-01-609-2837INTERCHANGEABLE
CONTROL UNIT,SPECIA
C4-2-1

Frequently Asked Questions

What is NSN 9150-00-261-8294?

NSN 9150-00-261-8294 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 9150-00-261-8294?

NSN 9150-00-261-8294 has 6 cross-referenced part numbers: 9150PL1394283 (Jednolity Indeks Materialowy - Uniform Material Index), C-421 (Btr Valve Sealants Inc), C-421 (Flowserve Us Inc. Dba Flowserve Div Flow Control - Oil and Gas Sector), NORDSTROM 421 SEALANT (Flowserve Corporation Div Flowserve Us Inc), LUBRICANT 24 (Acf Industries Inc) and 1 more.

What NSN replaces 9150-00-261-8294?

There are 8 known substitutes for 9150-00-261-8294: 9150-00-261-8293, 9150-00-261-8295, 9150-00-261-8296 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of C-421?

Key specifications for C-421: Effective Temp Range Rating: +30.0 TO 275.0 FAHRENHEIT DEGF; Basic Ingredient: PETROLEUM OIL AND ALUMINUM SOAP; Minimum Dropping Point: 300.0 FAHRENHEIT DEGF; Diameter: 0.500 INCHES IN. 7 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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