78-077

View detailed technical data, stock status, and sourcing information for: 78-077
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5330 Packing and Gasket Materials

National Stock Number

5330-00-103-2968

Item Name Code

04521

Assigment Date

06/07/1968 (58 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.

0.544 inches minimum and 0.558 inches maximum center hole diameter, -40.0 fahrenheit and 180.0 fahrenheit temp rating, 70.0 shore durometer a nominal overall hardness rating, 0.678 inches minimum and 0.704 inches maximum peripheral diameter, 0.067 inches minimum and 0.073 inches maximum 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.

Temp Rating: -40.0 fahrenheit and 180.0 fahrenheit
Cross-Sectional Height: 0.067 inches minimum and 0.073 inches maximum
Center Hole Diameter: 0.544 inches minimum and 0.558 inches maximum
Peripheral Diameter: 0.678 inches minimum and 0.704 inches maximum
Hardness Rating: 70.0 shore durometer a nominal overall
Special Features: cross-sectional shape style:116 irregular shape from old fiig a03200
Material: rubber polyurethane overall

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
2-015P642-70	Preformed Packing
78-077	Preformed Packing
GRP78-077	Preformed Packing

FAQs

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

What is the FSCG of the NSN 5330-00-103-2968?

The FSCG of the NSN 5330-00-103-2968 is 5330

Does the NSN 5330-00-103-2968 have a Schedule B code assigned?

Yes, the Schedule B code is 3926904500

Does NSN 5330-00-103-2968 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 5330-00-103-2968 contain precious materials?

Precious metal content is unknown

Does NSN 5330-00-103-2968 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 5330-00-103-2968 was assigned to the Federal Catalog?

It was assigned 58 years ago, on Fri, Jun 7, 1968