PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

STM23-402Rubber Sheet,solid

Lockheed Martin Corp · NSN 9320-01-004-3621 · FSC 9320 · No Item Name Available
Verified by PartsTable
NSN 9320-01-004-3621 — this item is cataloged by the U.S. Government under National Stock Number 9320-01-004-3621. Primary manufacturer part number: STM23-402.
Features
  • Rubber Sheet,solid — FSC 9320
  • Temp Rating: -70.0 CELSIUS AND 204.0 CELSIUS DEGC
  • Departure From Cited Designator: AS MODIFIED BY MINIMUM TENSILE STRENGTH,ENVIRONMENTAL PROTECTION AND COLOR
  • Minimum Tensile Strength: ERR-060
  • Nondefinitive Spec/std Data: 3B CLASS AND SH FORM AND 50 GRADE
  • Surface Condition: SMOOTH BOTH SIDES
  • Material Document and Classification: ZZ-R-765, CLASS 3B, GRADE 50 FED SPEC 1ST MATERIAL RESPONSE AND ST-23-402, CLASS 2, GRADE 50, LOCKHEED-GEORGIA CO MFR REF 2ND MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
  • Color: GRAY/GREY BOTH SIDES
Applications
  • Applications requiring Rubber Silicone Class Q or Rubber Location Not Otherwise Specified construction
General Description

The Rubber Sheet,solid, cataloged under National Stock Number 9320-01-004-3621, is classified within Federal Supply Class 9320 (No Item Name Available) of the Nonmetallic Fabricated Materials group. The primary manufacturer of record is Lockheed Martin Corp. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN9320-01-004-3621
Primary Part NumberSTM23-402
Item NameRubber Sheet,solid
FSC / FSG9320 / 93 — No Item Name Available
ManufacturerLockheed Martin Corp
StatusCANCELLED
Temp Rating-70.0 CELSIUS AND 204.0 CELSIUS DEGC
Departure From Cited DesignatorAS MODIFIED BY MINIMUM TENSILE STRENGTH,ENVIRONMENTAL PROTECTION AND COLOR
Minimum Tensile StrengthERR-060
Nondefinitive Spec/std Data3B CLASS AND SH FORM AND 50 GRADE
Surface ConditionSMOOTH BOTH SIDES
Material Document and ClassificationZZ-R-765, CLASS 3B, GRADE 50 FED SPEC 1ST MATERIAL RESPONSE AND ST-23-402, CLASS 2, GRADE 50, LOCKHEED-GEORGIA CO MFR REF 2ND MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
ColorGRAY/GREY BOTH SIDES
MaterialRUBBER SILICONE CLASS Q OR RUBBER LOCATION NOT OTHERWISE SPECIFIED
Environmental ProtectionFLEX RESISTANT AND TEAR
Width36.000 INCHES NOMINAL IN
Specification/standard Data98897-ST-23-402 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Length36.000 INCHES NOMINAL IN
Nonmetallic Hardness Rating45.0 MINIMUM SHORE DUROMETER A AND 55.0 MAXIMUM SHORE DUROMETER A
Thickness0.125 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
9320-00-144-5842 INTERCHANGEABLE
Rubber Round Section
2910-00-218-1262 INTERCHANGEABLE
Pump,fuel,engine
2925-00-336-8362 INTERCHANGEABLE
Shim,magneto
5360-00-369-9402125251 INTERCHANGEABLE
Spring,helical,extension
Telemechanics Inc
5905-00-434-18457276R500L.25 INTERCHANGEABLE
Resistor,variable,wire Wound,pre
Bi Technologies Corporation Div Bi Technologies Corp.
5961-00-455-9284H510 INTERCHANGEABLE
Semiconductor Device,diode
Teledyne Micropac, Inc.
5930-00-538-1332H5-10 INTERCHANGEABLE
Switch,sensitive
Safran Power Usa, Llc
9390-00-551-3019 INTERCHANGEABLE
Nonmetallic Special Shaped Secti
5960-00-660-36691988235 INTERCHANGEABLE
Visor,cathode Ray Tube
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
2915-00-705-97203253 INTERCHANGEABLE
Retainer,central
Collins Engine Nozzles, Inc
Cross-Reference Index
Part NumberManufacturer
STM23-402 Lockheed Martin Corp (USA)
A-A-59588-3B-50 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
3569 Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp (USA)
M951 Saint-Gobain Performance Plastics Inc. Dba Saint Gobain Performance Plastics Inc. (USA)
H510 Kirkhill Ta Haskon Div (USA)
950-C-1225 Kirkhill, Inc. Dba Kirkhill Inc (USA)
3253 Burke Industries Purosil Div (USA)
Related Parts
9320-00-144-5842INTERCHANGEABLE
RUBBER ROUND SECTION
2910-00-218-1262INTERCHANGEABLE
PUMP,FUEL,ENGINE
2925-00-336-8362INTERCHANGEABLE
SHIM,MAGNETO
5360-00-369-9402INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
125251
5905-00-434-1845INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,PRE
7276R500L.25
5961-00-455-9284INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
H510
5930-00-538-1332INTERCHANGEABLE
SWITCH,SENSITIVE
H5-10
9390-00-551-3019INTERCHANGEABLE
NONMETALLIC SPECIAL SHAPED SECTI
5960-00-660-3669INTERCHANGEABLE
VISOR,CATHODE RAY TUBE
1988235
2915-00-705-9720INTERCHANGEABLE
RETAINER,CENTRAL
3253
5905-01-051-3668INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,PRE
3253R500
5970-01-145-7123INTERCHANGEABLE
INSULATOR,BUSHING
35-69

Frequently Asked Questions

What is NSN 9320-01-004-3621?

NSN 9320-01-004-3621 is a Rubber Sheet,solid, manufactured by Lockheed Martin Corp, classified under FSC 9320 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 9320-01-004-3621?

NSN 9320-01-004-3621 has 7 cross-referenced part numbers: STM23-402 (Lockheed Martin Corp), A-A-59588-3B-50 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), 3569 (Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp), M951 (Saint-Gobain Performance Plastics Inc. Dba Saint Gobain Performance Plastics Inc.), H510 (Kirkhill Ta Haskon Div) and 2 more.

What NSN replaces 9320-01-004-3621?

There are 12 known substitutes for 9320-01-004-3621: 9320-00-144-5842, 2910-00-218-1262, 2925-00-336-8362 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of STM23-402?

Key specifications for STM23-402: Temp Rating: -70.0 CELSIUS AND 204.0 CELSIUS DEGC; Departure From Cited Designator: AS MODIFIED BY MINIMUM TENSILE STRENGTH,ENVIRONMENTAL PROTECTION AND COLOR; Minimum Tensile Strength: ERR-060; Nondefinitive Spec/std Data: 3B CLASS AND SH FORM AND 50 GRADE. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 9320-01-004-3621 still in active supply?

NSN 9320-01-004-3621 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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