51X657

View detailed technical data, stock status, and sourcing information for: 51X657
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5330 Packing and Gasket Materials

National Stock Number

5330-00-285-6834

Item Name Code

04214

Assigment Date

01/01/1963 (63 years ago)

A pliable rubber, felt, leather, or composition ring-shaped element, split or solid; with or without spring or spreader, having a metal shell on all or a portion of at least two of the outer surfaces. It may be designed to be either bolt mounted or pressmounted between fixed and moveable parts to form a tight and effective seal by the pressure of the spring or spreader or the resiliency inherent in the element material. Excludes:packing with retainer.

1.500 inches nominal accommodated shaft diameter, square case style, 2000 feet per minute accommodated shaft maximum rated speed, 2.502 inches nominal housing bore diameter, 0.469 inches minimum and 0.531 inches maximum seal width

Product Characteristics

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

Accommodated Shaft Diameter: 1.500 inches nominal
Seal Width: 0.469 inches minimum and 0.531 inches maximum
Accommodated Shaft Maximum Rated Speed: 2000 feet per minute
Case Style: square
Housing Bore Diameter: 2.502 inches nominal
Sealing Element Style: angular
Material: leather or rubber synthetic sealing element

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5330-00-154-1356	Plain Encased Seal	07/01/2025
5330-00-290-0082	No Name Available	06/01/1976
5330-00-291-9047	Plain Encased Seal	07/01/2025
5330-00-377-3354	No Name Available	06/01/1977

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
106272	Plain Encased Seal
12048027	Plain Encased Seal
14301A	Plain Encased Seal
16700828	Plain Encased Seal
301SN175	Plain Encased Seal
42-6026	Plain Encased Seal
43-158	Plain Encased Seal
51X657	Plain Encased Seal
A3019A	Plain Encased Seal
CA1057	Plain Encased Seal
MCX208	Plain Encased Seal
MD1366	Plain Encased Seal
S16127	Plain Encased Seal

FAQs

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

What is the FSCG of the NSN 5330-00-285-6834?

The FSCG of the NSN 5330-00-285-6834 is 5330

Does the NSN 5330-00-285-6834 have a Schedule B code assigned?

Yes, the Schedule B code is 8484200000

Does NSN 5330-00-285-6834 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 5330-00-285-6834 contain precious materials?

Item does not contain precious metal.

Does NSN 5330-00-285-6834 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 5330-00-285-6834 was assigned to the Federal Catalog?

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