PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11548Ring,piston

Pacific Piston Ring Co Inc · NSN 2805-01-142-4260 · FSC 2805 · No Item Name Available
Verified by PartsTable
NSN 2805-01-142-4260 — this item is cataloged by the U.S. Government under National Stock Number 2805-01-142-4260. Primary manufacturer part number: 11548.
Features
  • Ring,piston — FSC 2805
  • Material Document and Classification: AMS5398 ASSN STD 1ST MATERIAL RESPONSE OR AMS5643,COND H1025 ASSN STD 2ND MATERIAL RESPONSE OR AMS5644 ASSN STD 3RD MATERIAL RESPONSE OR MIL-S-25043,COND TH1050 MIL SPEC 4TH MATERIAL RESPONSE INSIDE PERIPHERY
  • Ring Style: CONCENTRIC
  • Material: PLASTIC POLYAMIDE NYLON OUTSIDE PERIPHERY
  • Surface Treatment: PASSIVATE INSIDE PERIPHERY
  • Cross-Sectional Shape Style: PLAIN RECTANGULAR, TWO PIECE, STRAIGHT FACE
  • Material: STEEL CORROSION RESISTING INSIDE PERIPHERY
  • Surface Treatment Document and Classification: PS13001,FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE INSIDE PERIPHERY
Applications
  • Applications requiring Plastic Polyamide Nylon Outside Periphery construction
General Description

The Ring,piston, cataloged under National Stock Number 2805-01-142-4260, is classified within Federal Supply Class 2805 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Pacific Piston Ring Co Inc. Government technical data includes 9 verified specifications, 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2805-01-142-4260
Primary Part Number11548
Item NameRing,piston
FSC / FSG2805 / 28 — No Item Name Available
ManufacturerPacific Piston Ring Co Inc
StatusACTIVE
Material Document and ClassificationAMS5398 ASSN STD 1ST MATERIAL RESPONSE OR AMS5643,COND H1025 ASSN STD 2ND MATERIAL RESPONSE OR AMS5644 ASSN STD 3RD MATERIAL RESPONSE OR MIL-S-25043,COND TH1050 MIL SPEC 4TH MATERIAL RESPONSE INSIDE PERIPHERY
Ring StyleCONCENTRIC
MaterialPLASTIC POLYAMIDE NYLON OUTSIDE PERIPHERY
Surface TreatmentPASSIVATE INSIDE PERIPHERY
Cross-Sectional Shape StylePLAIN RECTANGULAR, TWO PIECE, STRAIGHT FACE
MaterialSTEEL CORROSION RESISTING INSIDE PERIPHERY
Surface Treatment Document and ClassificationPS13001,FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE INSIDE PERIPHERY
Radial Wall Thickness0.0800 INCHES MINIMUM AND 0.0900 INCHES MAXIMUM IN
Joint StyleSTEP JOINT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
2520-00-018-2638937340 INTERCHANGEABLE
Spider,universal Joint,vehicular
Am General Llc
5133-00-266-9471 INTERCHANGEABLE
Drill,twist
3040-00-395-9514SM-B-148793 INTERCHANGEABLE
Cam,control
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5360-00-526-352711548 INTERCHANGEABLE
Spring,helical,compression
Moog Inc
4720-00-718-6023 INTERCHANGEABLE
Hose Assembly,nonmetallic
5935-00-729-4099 INTERCHANGEABLE
Connector,receptacle,electrical
4920-00-876-688911548 INTERCHANGEABLE
Valve,vacuum Tester
Elbitamerica, Inc.
3010-01-006-95899176274 INTERCHANGEABLE
Bellows,pressure
Us Army Aviation and Missile Command
5340-01-104-8953100469 INTERCHANGEABLE
Clip,retaining
Haldex Brake Products Corporation
4730-01-240-194011548 INTERCHANGEABLE
Tee,tube
Alter Harry Co the Div of T E C
Cross-Reference Index
Part NumberManufacturer
287846-3 Parker-Hannifin Corporation Dba Control Systems Division (USA)
11548 PRIMARY Pacific Piston Ring Co Inc (USA)
Related Parts
2520-00-018-2638INTERCHANGEABLE
SPIDER,UNIVERSAL JOINT,VEHICULAR
937340
5133-00-266-9471INTERCHANGEABLE
DRILL,TWIST
3040-00-395-9514INTERCHANGEABLE
CAM,CONTROL
SM-B-148793
5360-00-526-3527INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
11548
4720-00-718-6023INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
5935-00-729-4099INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
4920-00-876-6889INTERCHANGEABLE
VALVE,VACUUM TESTER
11548
3010-01-006-9589INTERCHANGEABLE
BELLOWS,PRESSURE
9176274
5340-01-104-8953INTERCHANGEABLE
CLIP,RETAINING
100469
4730-01-240-1940INTERCHANGEABLE
TEE,TUBE
11548

Frequently Asked Questions

What is NSN 2805-01-142-4260?

NSN 2805-01-142-4260 is a Ring,piston, manufactured by Pacific Piston Ring Co Inc, classified under FSC 2805 (No Item Name Available). Status: active.

What are the part numbers for NSN 2805-01-142-4260?

NSN 2805-01-142-4260 has 2 cross-referenced part numbers: 287846-3 (Parker-Hannifin Corporation Dba Control Systems Division), 11548 (Pacific Piston Ring Co Inc).

What NSN replaces 2805-01-142-4260?

There are 10 known substitutes for 2805-01-142-4260: 2520-00-018-2638, 5133-00-266-9471, 3040-00-395-9514 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 11548?

Key specifications for 11548: Material Document and Classification: AMS5398 ASSN STD 1ST MATERIAL RESPONSE OR AMS5643,COND H1025 ASSN STD 2ND MATERIAL RESPONSE OR AMS5644 ASSN STD 3RD MATERIAL RESPONSE OR MIL-S-25043,COND TH1050 MIL SPEC 4TH MATERIAL RESPONSE INSIDE PERIPHERY; Ring Style: CONCENTRIC; Material: PLASTIC POLYAMIDE NYLON OUTSIDE PERIPHERY; Surface Treatment: PASSIVATE INSIDE PERIPHERY. 10 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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