172MLR1

View detailed technical data, stock status, and sourcing information for: 172MLR1
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5330 Packing and Gasket Materials

National Stock Number

5330-00-287-0580

Item Name Code

21205

Assigment Date

01/01/1961 (65 years ago)

A circular shaped item designed to be installed in a specially prepared groove or counterbore to provide a low pressure seal. It may be supplied in various cross-sectional shapes. It may be solid or cut through to allow for installation and fitting. Excludes items whose primary function is to provide sealing, wiping, or wearing surface capabilities for piston configurations. See also ring,piston and ring,wiper.

0.2500 inches nominal radial wall thickness, plain rectangular, straight face cross-sectional shape style, 0.1250 inches nominal overall width, expanding concentric ring style, 9.813 inches nominal outside diameter

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: plain rectangular, straight face
Outside Diameter: 9.813 inches nominal
Ring Style: expanding concentric
Radial Wall Thickness: 0.2500 inches nominal
Overall Width: 0.1250 inches nominal
Joint Style: interlocking joint
Material: steel overall

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2805-00-847-9907	No Name Available	05/24/1972
2520-00-875-4776	No Name Available	09/01/1971

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
172MLR1	Metal Seal Ring
4806-B	Metal Seal Ring
4806B	Metal Seal Ring
4987607	Metal Seal Ring
5330PL0811764	Metal Seal Ring

FAQs

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

What is the FSCG of the NSN 5330-00-287-0580?

The FSCG of the NSN 5330-00-287-0580 is 5330

Does the NSN 5330-00-287-0580 have a Schedule B code assigned?

Yes, the Schedule B code is 3926904500

Does NSN 5330-00-287-0580 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 5330-00-287-0580 contain precious materials?

Precious metal content is unknown

Does NSN 5330-00-287-0580 contain hazardous materials?

Indicates there is no information in the hmirs. The nsn is in a fsc in table ii of fed std 313 and a msds may be required by the user. The requirement for a msds is dependent on a hazard determination of the supplier or the intended end use of item.

When the NSN 5330-00-287-0580 was assigned to the Federal Catalog?

It was assigned 65 years ago, on Sun, Jan 1, 1961