E0540 3-904

View detailed technical data, stock status, and sourcing information for: E0540 3-904
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5330 Packing and Gasket Materials

National Stock Number

5330-01-037-7739

Item Name Code

04521

Assigment Date

03/24/1977 (49 years ago)

A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes:felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes:cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.

o-ring cross-sectional shape style, -70.0 fahrenheit and 250.0 fahrenheit temp rating, 80.0 shore durometer a maximum overall hardness rating, 0.351 inches nominal center hole diameter, 0.072 inches nominal cross-sectional height

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: o-ring
Temp Rating: -70.0 fahrenheit and 250.0 fahrenheit
Cross-Sectional Height: 0.072 inches nominal
Center Hole Diameter: 0.351 inches nominal
Hardness Rating: 80.0 shore durometer a maximum overall
Criticality Code Justification: zzzy
Color: black
Material: rubber synthetic overall
Reference Number Differentiating Characteristics: material will be in accordance with ships parts control center activity hx quality control,manufacturing and testing specifications

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
3-4E540-80	Preformed Packing
E0540 3-904	Preformed Packing

FAQs

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

What is the FSCG of the NSN 5330-01-037-7739?

The FSCG of the NSN 5330-01-037-7739 is 5330

Does the NSN 5330-01-037-7739 have a Schedule B code assigned?

Yes, the Schedule B code is 3926904500

Does NSN 5330-01-037-7739 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 5330-01-037-7739 contain precious materials?

Item does not contain precious metal.

Does NSN 5330-01-037-7739 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 5330-01-037-7739 was assigned to the Federal Catalog?

It was assigned 49 years ago, on Thu, Mar 24, 1977