PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B-3088Ring,piston

Cooper Machinery Services Llc · NSN 2815-00-273-0506 · FSC 2815 · No Item Name Available
Verified by PartsTable
NSN 2815-00-273-0506 — this item is cataloged by the U.S. Government under National Stock Number 2815-00-273-0506. Primary manufacturer part number: B-3088.
Features
  • Ring,piston — FSC 2815
  • Joint Style: DIAGONAL JOINT
  • Radial Wall Thickness: 0.4100 INCHES MINIMUM AND 0.4250 INCHES MAXIMUM IN
  • Material: IRON OVERALL
  • Cross-Sectional Shape Style: BEVELED FACE, DOUBLE SCRAPER, VENTILATED OIL CONTROL
  • Oil Passage Type and Quantity: 1 GROOVE OUTSIDE PERIPHERY
  • Standard Bore Diameter: 12.000 INCHES IN
  • Ring Style: CONCENTRIC
Applications
  • Applications requiring Iron Overall construction
General Description

The Ring,piston, cataloged under National Stock Number 2815-00-273-0506, is classified within Federal Supply Class 2815 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Cooper Machinery Services Llc. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2815-00-273-0506
Primary Part NumberB-3088
Item NameRing,piston
FSC / FSG2815 / 28 — No Item Name Available
ManufacturerCooper Machinery Services Llc
StatusACTIVE
Joint StyleDIAGONAL JOINT
Radial Wall Thickness0.4100 INCHES MINIMUM AND 0.4250 INCHES MAXIMUM IN
MaterialIRON OVERALL
Cross-Sectional Shape StyleBEVELED FACE, DOUBLE SCRAPER, VENTILATED OIL CONTROL
Oil Passage Type and Quantity1 GROOVE OUTSIDE PERIPHERY
Standard Bore Diameter12.000 INCHES IN
Ring StyleCONCENTRIC
Oil Passage Type and Quantity12 SLOT HORIZONTALLY THROUGH RING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5325-00-050-28636567 INTERCHANGEABLE
Grommet,nonmetallic
Cae Usa Inc.
4820-00-202-95281871-3-8IN INTERCHANGEABLE
Valve,globe
Flowserve Inc
5315-00-234-1650103361 INTERCHANGEABLE
Pin,cotter
Rolls-Royce Solutions America Inc
5325-00-249-6350 INTERCHANGEABLE
Grommet,nonmetallic
5360-00-253-29171862 INTERCHANGEABLE
Spring,helical,extension
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
5325-00-262-78311862 INTERCHANGEABLE
Grommet,nonmetallic
Atlantic India Rubber Co Inc
5950-00-647-5322774587 INTERCHANGEABLE
Transformer,power
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5365-00-662-34911862-00 INTERCHANGEABLE
Spacer,ring
Ontic Engineering & Manufacturing, Inc Dba Ontic Us
5330-00-774-6554S749A403 INTERCHANGEABLE
Gasket
Sealcraft Corporation
6520-00-930-79511862 INTERCHANGEABLE
Dental Operating and Treatment U
Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia
Cross-Reference Index
Part NumberManufacturer
B-3088 PRIMARY Cooper Machinery Services Llc (USA)
1862 PRIMARY Kaydon Ring & Seal Inc Dba Skf Precision Technologies (USA)
862C00 PRIMARY Kettenburg Marine (USA)
Related Parts
5325-00-050-2863INTERCHANGEABLE
GROMMET,NONMETALLIC
6567
4820-00-202-9528INTERCHANGEABLE
VALVE,GLOBE
1871-3-8IN
5315-00-234-1650INTERCHANGEABLE
PIN,COTTER
103361
5325-00-249-6350INTERCHANGEABLE
GROMMET,NONMETALLIC
5360-00-253-2917INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
1862
5325-00-262-7831INTERCHANGEABLE
GROMMET,NONMETALLIC
1862
5950-00-647-5322INTERCHANGEABLE
TRANSFORMER,POWER
774587
5365-00-662-3491INTERCHANGEABLE
SPACER,RING
1862-00
5330-00-774-6554INTERCHANGEABLE
GASKET
S749A403
6520-00-930-7951INTERCHANGEABLE
DENTAL OPERATING AND TREATMENT U
1862
7350-01-256-1093INTERCHANGEABLE
CUP,DRINKING
98200
5998-01-566-5345INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY

Frequently Asked Questions

What is NSN 2815-00-273-0506?

NSN 2815-00-273-0506 is a Ring,piston, manufactured by Cooper Machinery Services Llc, classified under FSC 2815 (No Item Name Available). Status: active.

What are the part numbers for NSN 2815-00-273-0506?

NSN 2815-00-273-0506 has 3 cross-referenced part numbers: B-3088 (Cooper Machinery Services Llc), 1862 (Kaydon Ring & Seal Inc Dba Skf Precision Technologies), 862C00 (Kettenburg Marine).

What NSN replaces 2815-00-273-0506?

There are 12 known substitutes for 2815-00-273-0506: 5325-00-050-2863, 4820-00-202-9528, 5315-00-234-1650 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B-3088?

Key specifications for B-3088: Joint Style: DIAGONAL JOINT; Radial Wall Thickness: 0.4100 INCHES MINIMUM AND 0.4250 INCHES MAXIMUM IN; Material: IRON OVERALL; Overall Width: 0.4980 INCHES NOMINAL IN. 9 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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