PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-R-25988BRubber Sheet,solid

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 9320-01-202-4622 · FSC 9320 · No Item Name Available
Verified by PartsTable
NSN 9320-01-202-4622 — this item is cataloged by the U.S. Government under National Stock Number 9320-01-202-4622. Primary manufacturer part number: MIL-R-25988B.
Features
  • Rubber Sheet,solid — FSC 9320
  • Width: 36.000 INCHES NOMINAL IN
  • Nondefinitive Spec/std Data: 1 CLASS AND 60 GRADE OR 70 GRADE AND II TYPE
  • Surface Condition: SMOOTH BOTH SIDES
  • Departure From Cited Designator: AS MODIFIED BY LENGTH
  • Material Document and Classification: MIL-R-25988,TYPE II,CLASS 1,GRADE 60 OR 70 MIL SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
  • Environmental Protection: FUEL RESISTANT AND OIL RESISTANT
  • Nonmetallic Hardness Rating: 55.0 MINIMUM SHORE DUROMETER A AND 75.0 MAXIMUM SHORE DUROMETER A
Applications
  • Applications requiring Rubber Fluorosilicone Class Fq Location Not Otherwise Specified construction
General Description

The Rubber Sheet,solid, cataloged under National Stock Number 9320-01-202-4622, is classified within Federal Supply Class 9320 (No Item Name Available) of the Nonmetallic Fabricated Materials group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 12 verified specifications, 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN9320-01-202-4622
Primary Part NumberMIL-R-25988B
Item NameRubber Sheet,solid
FSC / FSG9320 / 93 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Width36.000 INCHES NOMINAL IN
Nondefinitive Spec/std Data1 CLASS AND 60 GRADE OR 70 GRADE AND II TYPE
Surface ConditionSMOOTH BOTH SIDES
Departure From Cited DesignatorAS MODIFIED BY LENGTH
Material Document and ClassificationMIL-R-25988,TYPE II,CLASS 1,GRADE 60 OR 70 MIL SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
Environmental ProtectionFUEL RESISTANT AND OIL RESISTANT
Nonmetallic Hardness Rating55.0 MINIMUM SHORE DUROMETER A AND 75.0 MAXIMUM SHORE DUROMETER A
MaterialRUBBER FLUOROSILICONE CLASS FQ LOCATION NOT OTHERWISE SPECIFIED
Minimum Tensile StrengthERR-060
Thickness0.109 INCHES NOMINAL IN
Length36.000 INCHES NOMINAL IN
ColorBLUE BOTH SIDES
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5330-00-153-104199-4601-501 INTERCHANGEABLE
Packing Special
Hamilton Sundstrand Corporation
5331-00-211-8040L1120 5-818 INTERCHANGEABLE
O-Ring
Parker-Hannifin Corp Div O-Ring Division
5331-00-351-6971 INTERCHANGEABLE
O-Ring
5331-00-401-4902 INTERCHANGEABLE
O-Ring
5331-00-421-9429 INTERCHANGEABLE
O-Ring
5331-01-007-8799 INTERCHANGEABLE
O-Ring
5331-01-030-18260.080IDX0.035W COMPOUND TH-1057 INTERCHANGEABLE
O-Ring
Stillman Seal Corporation Div Stillman Seal Corperation
5331-01-030-229582005512-025 INTERCHANGEABLE
O-Ring
Woodward Hrt Inc
5331-01-102-5597016-002460-903 INTERCHANGEABLE
O-Ring
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
Cross-Reference Index
Part NumberManufacturer
MIL-R-25988B Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-R-25988 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
P5027-7 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
Related Parts
5330-00-153-1041INTERCHANGEABLE
PACKING SPECIAL
99-4601-501
5331-00-211-8040INTERCHANGEABLE
O-RING
L1120 5-818
5331-00-351-6971INTERCHANGEABLE
O-RING
5331-00-401-4902INTERCHANGEABLE
O-RING
5331-00-421-9429INTERCHANGEABLE
O-RING
5331-01-007-8799INTERCHANGEABLE
O-RING
5331-01-030-1826INTERCHANGEABLE
O-RING
0.080IDX0.035W COMPOUND TH-1057
5331-01-030-2295INTERCHANGEABLE
O-RING
82005512-025
5331-01-102-5597INTERCHANGEABLE
O-RING
016-002460-903

Frequently Asked Questions

What is NSN 9320-01-202-4622?

NSN 9320-01-202-4622 is a Rubber Sheet,solid, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 9320 (No Item Name Available). Status: active.

What are the part numbers for NSN 9320-01-202-4622?

NSN 9320-01-202-4622 has 3 cross-referenced part numbers: MIL-R-25988B (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-R-25988 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), P5027-7 (Electric Boat Corporation Div General Dynamics Electric Boat).

What NSN replaces 9320-01-202-4622?

There are 9 known substitutes for 9320-01-202-4622: 5330-00-153-1041, 5331-00-211-8040, 5331-00-351-6971 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-R-25988B?

Key specifications for MIL-R-25988B: Width: 36.000 INCHES NOMINAL IN; Nondefinitive Spec/std Data: 1 CLASS AND 60 GRADE OR 70 GRADE AND II TYPE; Surface Condition: SMOOTH BOTH SIDES; Departure From Cited Designator: AS MODIFIED BY LENGTH. 12 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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