PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-R-2765DGasket

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5330-00-239-1871 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-239-1871 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-239-1871. Primary manufacturer part number: MIL-R-2765D.
Features
  • Gasket — FSC 5330
  • Aperture Diameter: 1.312 INCHES NOMINAL IN
  • Elongation Percentage: 300 MAXIMUM
  • Cross-Sectional Thickness: 0.125 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: SOLID SINGLE OR COMPOSITION
  • Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
  • Style Designator: CIRCULAR
  • Material Document and Classification: MIL-R-2765 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Butadiene-Acrylonitrile Class Nbr Overall construction
General Description

The Gasket, cataloged under National Stock Number 5330-00-239-1871, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives 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 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-00-239-1871
Primary Part NumberMIL-R-2765D
Item NameGasket
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Aperture Diameter1.312 INCHES NOMINAL IN
Elongation Percentage300 MAXIMUM
Cross-Sectional Thickness0.125 INCHES NOMINAL IN
Cross-Sectional Shape StyleSOLID SINGLE OR COMPOSITION
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
Style DesignatorCIRCULAR
Material Document and ClassificationMIL-R-2765 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Outside Diameter1.688 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5331-00-291-92053122963PC3 INTERCHANGEABLE
O-Ring
Naval Ship Systems Command
Cross-Reference Index
Part NumberManufacturer
MIL-R-2765D Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M2765 1-11/16ODX1-5/16IDX1/8 THK Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5331-00-291-9205INTERCHANGEABLE
O-RING
3122963PC3

Frequently Asked Questions

What is NSN 5330-00-239-1871?

NSN 5330-00-239-1871 is a Gasket, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-00-239-1871?

NSN 5330-00-239-1871 has 2 cross-referenced part numbers: MIL-R-2765D (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M2765 1-11/16ODX1-5/16IDX1/8 THK (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5330-00-239-1871?

There is 1 known substitute for 5330-00-239-1871: 5331-00-291-9205. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-R-2765D?

Key specifications for MIL-R-2765D: Aperture Diameter: 1.312 INCHES NOMINAL IN; Elongation Percentage: 300 MAXIMUM; Cross-Sectional Thickness: 0.125 INCHES NOMINAL IN; Cross-Sectional Shape Style: SOLID SINGLE OR COMPOSITION. 8 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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