PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

9957O-Ring

DP Manufacturing Inc. · NSN 5331-01-525-0160 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-525-0160 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-525-0160. Primary manufacturer part number: 9957.
Features
  • O-Ring — FSC 5331
  • Center Hole Diameter: 0.500 INCHES NOMINAL IN
  • Cross-Sectional Height: 0.125 INCHES NOMINAL IN
  • 7 verified cross-references
  • Primary manufacturer: DP Manufacturing Inc.
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-525-0160, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is DP Manufacturing Inc.. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 6 manufacturers, 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
NSN5331-01-525-0160
Primary Part Number9957
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerDP Manufacturing Inc.
StatusACTIVE
Center Hole Diameter0.500 INCHES NOMINAL IN
Cross-Sectional Height0.125 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
2805-00-528-6396 INTERCHANGEABLE
Valve,poppet,engine
5310-00-595-999499-57 INTERCHANGEABLE
Washer,spring Tension
Hamilton Sundstrand Corporation
5950-01-076-182112272683 INTERCHANGEABLE
Transformer,pulse
U S Army Tank Automotive Command Amsta-Im-Mm
4820-01-255-88999957D41M INTERCHANGEABLE
Valve,safety Relief
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
5140-01-542-7175P12612811 INTERCHANGEABLE
Cabinet,tool,mobile
Fairbanks Morse, Llc
Cross-Reference Index
Part NumberManufacturer
26KP417 Oshkosh Defense Llc (USA)
9957 Daimler Truck North America Llc (USA)
DP9957 Jige International (FRA)
26KP417 Oshkosh Corp (USA)
Y00023213 Soframe (FRA)
9957 PRIMARY DP Manufacturing Inc. (USA)
DPW/9957 Daimler Truck North America Llc (USA)
Related Parts
2805-00-528-6396INTERCHANGEABLE
VALVE,POPPET,ENGINE
5310-00-595-9994INTERCHANGEABLE
WASHER,SPRING TENSION
99-57
5950-01-076-1821INTERCHANGEABLE
TRANSFORMER,PULSE
12272683
4820-01-255-8899INTERCHANGEABLE
VALVE,SAFETY RELIEF
9957D41M
5140-01-542-7175INTERCHANGEABLE
CABINET,TOOL,MOBILE
P12612811

Frequently Asked Questions

What is NSN 5331-01-525-0160?

NSN 5331-01-525-0160 is a O-Ring, manufactured by DP Manufacturing Inc., classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-525-0160?

NSN 5331-01-525-0160 has 7 cross-referenced part numbers: 26KP417 (Oshkosh Defense Llc), 9957 (Daimler Truck North America Llc), DP9957 (Jige International), 26KP417 (Oshkosh Corp), Y00023213 (Soframe) and 2 more.

What NSN replaces 5331-01-525-0160?

There are 5 known substitutes for 5331-01-525-0160: 2805-00-528-6396, 5310-00-595-9994, 5950-01-076-1821 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 9957?

Key specifications for 9957: Part Name Assigned by Controlling Agency: 10 1/2ID X 1/8W O-RING W; Center Hole Diameter: 0.500 INCHES NOMINAL IN; Cross-Sectional Height: 0.125 INCHES NOMINAL IN; End Item Identification: 2320-01-488-6962. 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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