5F20-1091-10855

View detailed technical data, stock status, and sourcing information for: 5F20-1091-10855
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Federal Supply Group

Engines, Turbines, and Components

Federal Supply Classification

2805 Except Aircraft; and Components Gasoline Reciprocating Engines

National Stock Number

2805-00-255-9099

Item Name Code

11459

Assigment Date

01/01/1963 (63 years ago)

A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes:packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.

0.1550 inches nominal overall width, 2.500 inches standard bore diameter, concentric ring style, straight face, double scraper, ventilated oil control cross-sectional shape style, 0.1100 inches minimum and 0.1150 inches maximum radial wall thickness

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Cross-Sectional Shape Style: straight face, double scraper, ventilated oil control
Ring Style: concentric
Radial Wall Thickness: 0.1100 inches minimum and 0.1150 inches maximum
Overall Width: 0.1550 inches nominal
Standard Bore Diameter: 2.500 inches
Joint Style: vertical joint
Oil Passage Type And Quantity: 8 slot horizontally through ring
Material: iron overall
Fsc Application Data: refrigeration compressor

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
17-10518-00	Piston Ring
5F20-1091	Piston Ring
5F20-1091-10855	Piston Ring

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 2805-00-255-9099?

The FSCG of the NSN 2805-00-255-9099 is 2805

Does the NSN 2805-00-255-9099 have a Schedule B code assigned?

Yes, the Schedule B code is 8409918000

Does NSN 2805-00-255-9099 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 2805-00-255-9099 contain precious materials?

Item does not contain precious metal.

Does NSN 2805-00-255-9099 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 2805-00-255-9099 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963