M25988/1-342

View detailed technical data, stock status, and sourcing information for: M25988/1-342
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5331 O-Ring

National Stock Number

5331-01-007-1618

Item Name Code

47946

Assigment Date

07/31/1975 (51 years ago)

A nonmetallic circular item with an aperature, having a solid round cross-section. They are used primarily for sealing. For items with other than round cross section, see packing,preformed. For noncircular items with a round cross-section, see seal,nonmetallic round section and rubber,round section.

4.020 inches nominal outside diameter, 70.0 shore durometer a nominal hardness rating, 3.572 inches minimum and 3.628 inches maximum center hole diameter, 0.205 inches minimum and 0.215 inches maximum cross-sectional height, 125 maximum elongation percentage

Product Characteristics

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

Outside Diameter: 4.020 inches nominal
Cross-Sectional Height: 0.205 inches minimum and 0.215 inches maximum
Center Hole Diameter: 3.572 inches minimum and 3.628 inches maximum
Elongation Percentage: 125 maximum
Hardness Rating: 70.0 shore durometer a nominal
Material: rubber fluorosilicone class fq

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5330-00-255-9693	No Name Available	06/01/1986
5330-00-442-7912	No Name Available	02/01/1979

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
2661058Y342	O-Ring
M25988/1-342	O-Ring

FAQs

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

What is the FSCG of the NSN 5331-01-007-1618?

The FSCG of the NSN 5331-01-007-1618 is 5331

Does the NSN 5331-01-007-1618 have a Schedule B code assigned?

Yes, the Schedule B code is 4016930000

Does NSN 5331-01-007-1618 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 5331-01-007-1618 contain precious materials?

Item does not contain precious metal.

Does NSN 5331-01-007-1618 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 5331-01-007-1618 was assigned to the Federal Catalog?

It was assigned 51 years ago, on Thu, Jul 31, 1975