42708A

View detailed technical data, stock status, and sourcing information for: 42708A
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5330 Packing and Gasket Materials

National Stock Number

5330-00-678-1427

Item Name Code

04214

Assigment Date

01/01/1963 (63 years ago)

A relatively thin metallic item, having a concave or cupped contour, designed to effect its own seal by compression against the circumference of a hole. It is used as a blowout plug in boilers, engines, and the like to relieve the pressure created by the expansion of fluids caused by heat or freezing.

0.421 inches minimum and 0.453 inches maximum seal width, square case style, 1.749 inches minimum and 1.751 inches maximum accommodated shaft diameter, 2.378 inches nominal outside diameter, 2.376 inches minimum and 2.380 inches maximum housing bore diameter

Product Characteristics

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

Outside Diameter: 2.378 inches nominal
Accommodated Shaft Diameter: 1.749 inches minimum and 1.751 inches maximum
Seal Width: 0.421 inches minimum and 0.453 inches maximum
Case Style: square
Housing Bore Diameter: 2.376 inches minimum and 2.380 inches maximum
Sealing Element Style: angular
Material: rubber synthetic sealing element
Material: steel case
Surface Treatment: plastic case

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
42708A	Plain Encased Seal
482246	Plain Encased Seal
7044139	Plain Encased Seal

FAQs

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

What is the FSCG of the NSN 5330-00-678-1427?

The FSCG of the NSN 5330-00-678-1427 is 5330

Does the NSN 5330-00-678-1427 have a Schedule B code assigned?

Yes, the Schedule B code is 8484200000

Does NSN 5330-00-678-1427 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 5330-00-678-1427 contain precious materials?

Precious metal content is unknown

Does NSN 5330-00-678-1427 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 5330-00-678-1427 was assigned to the Federal Catalog?

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