PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILP5516CLASSAPacking,preformed

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5330-00-291-5978 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-291-5978 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-291-5978. Primary manufacturer part number: MILP5516CLASSA.
Features
  • Packing,preformed — FSC 5330
  • Cross-Sectional Shape Style: O-RING
  • Hardness Rating: 88.0 SHORE DUROMETER A NOMINAL OVERALL
  • Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
  • Material Document and Classification: MIL-P-5516 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Cross-Sectional Height: 0.125 INCHES NOMINAL IN
  • Center Hole Diameter: 4.875 INCHES NOMINAL IN
  • 1 verified cross-reference
Applications
  • Applications requiring Rubber Butadiene-Acrylonitrile Class Nbr Overall construction
General Description

The Packing,preformed, cataloged under National Stock Number 5330-00-291-5978, 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 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-00-291-5978
Primary Part NumberMILP5516CLASSA
Item NamePacking,preformed
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Cross-Sectional Shape StyleO-RING
Hardness Rating88.0 SHORE DUROMETER A NOMINAL OVERALL
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
Material Document and ClassificationMIL-P-5516 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Cross-Sectional Height0.125 INCHES NOMINAL IN
Center Hole Diameter4.875 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5330-00-123-5665 INTERCHANGEABLE
Packing,preformed
5331-00-171-9916 INTERCHANGEABLE
O-Ring
5331-00-531-2261203289 INTERCHANGEABLE
O-Ring
Valcor Engineering Corporation
5331-00-706-3188A395X15 INTERCHANGEABLE
O-Ring
David Brown Hydraulics Inc Dba Hydreco
5331-00-718-9295A395X83 INTERCHANGEABLE
O-Ring
David Brown Hydraulics Inc Dba Hydreco
Cross-Reference Index
Part NumberManufacturer
MILP5516CLASSA Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5330-00-123-5665INTERCHANGEABLE
PACKING,PREFORMED
5331-00-171-9916INTERCHANGEABLE
O-RING
5331-00-531-2261INTERCHANGEABLE
O-RING
203289
5331-00-706-3188INTERCHANGEABLE
O-RING
A395X15
5331-00-718-9295INTERCHANGEABLE
O-RING
A395X83

Frequently Asked Questions

What is NSN 5330-00-291-5978?

NSN 5330-00-291-5978 is a Packing,preformed, 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 5330-00-291-5978?

NSN 5330-00-291-5978 has 1 cross-referenced part number: MILP5516CLASSA (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5330-00-291-5978?

There are 5 known substitutes for 5330-00-291-5978: 5330-00-123-5665, 5331-00-171-9916, 5331-00-531-2261 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MILP5516CLASSA?

Key specifications for MILP5516CLASSA: Cross-Sectional Shape Style: O-RING; Hardness Rating: 88.0 SHORE DUROMETER A NOMINAL OVERALL; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL; Material Document and Classification: MIL-P-5516 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL. 6 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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