PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

13978O-Ring

Bourns Inc · NSN 5331-01-582-8612 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-582-8612 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-582-8612. Primary manufacturer part number: 13978.
Features
  • O-Ring — FSC 5331
  • Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
  • 2 verified cross-references
  • Primary manufacturer: Bourns Inc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Butadiene-Acrylonitrile Class Nbr construction
General Description

The O-Ring, cataloged under National Stock Number 5331-01-582-8612, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Bourns Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, 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
NSN5331-01-582-8612
Primary Part Number13978
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerBourns Inc
StatusACTIVE
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5330-00-291-774016440 INTERCHANGEABLE
Seal,plain Encased
Harbormaster Marine, Inc
3110-01-172-87777-113-100061 INTERCHANGEABLE
Bearing,roller,cylindrical
Mpb Corporation Dba Mpb Corp
5330-01-272-262513978 INTERCHANGEABLE
Seal,nonmetallic Angle
Sullair Corp
Cross-Reference Index
Part NumberManufacturer
13978 Cat Pumps Corp (USA)
13978 PRIMARY Bourns Inc (USA)
Related Parts
5330-00-291-7740INTERCHANGEABLE
SEAL,PLAIN ENCASED
16440
3110-01-172-8777INTERCHANGEABLE
BEARING,ROLLER,CYLINDRICAL
7-113-100061
5330-01-272-2625INTERCHANGEABLE
SEAL,NONMETALLIC ANGLE
13978

Frequently Asked Questions

What is NSN 5331-01-582-8612?

NSN 5331-01-582-8612 is a O-Ring, manufactured by Bourns Inc, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-582-8612?

NSN 5331-01-582-8612 has 2 cross-referenced part numbers: 13978 (Cat Pumps Corp), 13978 (Bourns Inc).

What NSN replaces 5331-01-582-8612?

There are 3 known substitutes for 5331-01-582-8612: 5330-00-291-7740, 3110-01-172-8777, 5330-01-272-2625. Verify interchangeability with system specifications before substitution.

What are the specifications of 13978?

Key specifications for 13978: Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR; Part Name Assigned by Controlling Agency: O-RING, SEAL CASE-70D; End Item Identification: 5CP PLUNGER PUMP, MODELS 5CP2120W, 5CP2140WCS, 5CP2150W. 3 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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