PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

305111O-Ring

Mega Corp. · NSN 5331-01-588-3824 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-588-3824 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-588-3824. Primary manufacturer part number: 305111.
Features
  • O-Ring — FSC 5331
  • Material: RUBBER CHLOROPRENE CLASS CR
  • 1 verified cross-reference
  • Primary manufacturer: Mega Corp.
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Chloroprene Class Cr construction
General Description

The O-Ring, cataloged under National Stock Number 5331-01-588-3824, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Mega Corp.. Government technical data includes 1 verified specification, 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-588-3824
Primary Part Number305111
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerMega Corp.
StatusACTIVE
MaterialRUBBER CHLOROPRENE CLASS CR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4320-00-422-8528 INTERCHANGEABLE
Seat
6515-00-754-2837 INTERCHANGEABLE
Needle,hypodermic
1620-01-201-046730511-1 INTERCHANGEABLE
Cover Assembly
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
Cross-Reference Index
Part NumberManufacturer
305111 PRIMARY Mega Corp. (USA)
Related Parts
4320-00-422-8528INTERCHANGEABLE
SEAT
6515-00-754-2837INTERCHANGEABLE
NEEDLE,HYPODERMIC
1620-01-201-0467INTERCHANGEABLE
COVER ASSEMBLY
30511-1

Frequently Asked Questions

What is NSN 5331-01-588-3824?

NSN 5331-01-588-3824 is a O-Ring, manufactured by Mega Corp., classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-588-3824?

NSN 5331-01-588-3824 has 1 cross-referenced part number: 305111 (Mega Corp.).

What NSN replaces 5331-01-588-3824?

There are 3 known substitutes for 5331-01-588-3824: 4320-00-422-8528, 6515-00-754-2837, 1620-01-201-0467. Verify interchangeability with system specifications before substitution.

What are the specifications of 305111?

Key specifications for 305111: Part Name Assigned by Controlling Agency: NEOPRENE O-RING-VOLUTE 13 IN. IN; Special Features: MTT20-CAT7779F0-3 SECTION 1,PAGE 1-1 ITEM 32; Material: RUBBER CHLOROPRENE CLASS CR; End Item Identification: MEGA M4 WATER PUMP-CORROSION RESISTANT. 4 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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