429B656-1

View detailed technical data, stock status, and sourcing information for: 429B656-1
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5330 Packing and Gasket Materials

National Stock Number

5330-00-448-4347

Item Name Code

21205

Assigment Date

01/13/1971 (55 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.

0.7480 inches minimum and 0.7500 inches maximum overall width, plain rectangular, straight face cross-sectional shape style, contracting concentric ring style, 6.756 inches minimum and 6.759 inches maximum inside diameter, 1.4910 inches minimum and 1.4940 inches maximum radial wall thickness

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
Inside Diameter: 6.756 inches minimum and 6.759 inches maximum
Ring Style: contracting concentric
Radial Wall Thickness: 1.4910 inches minimum and 1.4940 inches maximum
Overall Width: 0.7480 inches minimum and 0.7500 inches maximum
Joint Style: vertical joint
Metallic Hardness Rating: 50.0 nominal brinell standard
Special Features: 2 ea 0.344 in. dia holes drilled through upper half and 2 ea 0.257 in. holes drilled and tapped 5/16-18 nc-3 with 2 ea cap screws piece no. 4 installed,all surfaces finished,outside left and right corners chamfered 0.125 in. lg and 30 deg angle
Material: nickel alloy overall
Material Document And Classification: general electric co medium steam turbine dept b11g21a mfr ref single material response overall
Fsc Application Data: propulsion turbine

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
429B656-1	Metal Seal Ring
429B656PC1	Metal Seal Ring

FAQs

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

What is the FSCG of the NSN 5330-00-448-4347?

The FSCG of the NSN 5330-00-448-4347 is 5330

Does the NSN 5330-00-448-4347 have a Schedule B code assigned?

Yes, the Schedule B code is 3926904500

Does NSN 5330-00-448-4347 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 5330-00-448-4347 contain precious materials?

Item does not contain precious metal.

Does NSN 5330-00-448-4347 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 5330-00-448-4347 was assigned to the Federal Catalog?

It was assigned 55 years ago, on Wed, Jan 13, 1971