E7770

View detailed technical data, stock status, and sourcing information for: E7770
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Federal Supply Group

Pumps and Compressors

Federal Supply Classification

4320 Power and Hand Pumps

National Stock Number

4320-00-398-7237

Item Name Code

22534

Assigment Date

01/01/1963 (63 years ago)

A cylindrical item with or without flange(s), designed to be inserted in a pump casing or secured to the impeller of a centrifugal pump. It is used for the purpose of providing a close running clearance between the impeller and casing in order to prevent or overcome leakage due to erosion. It may also be used as a diffuser ring in the suction and discharge throats of valves.

3.125 inches minimum and 3.127 inches maximum body inside diameter, plain body style, 3.500 inches minimum and 3.503 inches maximum body outside diameter, square all corners corner shape, 0.562 inches nominal overall length

Product Characteristics

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

Body Style: plain
Overall Length: 0.562 inches nominal
Body Outside Diameter: 3.500 inches minimum and 3.503 inches maximum
Body Inside Diameter: 3.125 inches minimum and 3.127 inches maximum
Corner Shape: square all corners
Material: nickel alloy
Material Document And Classification: mil-b-16261,grade 4-canceled mil spec single material response

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
3165280	Wearing Ring
D2331PC31	Wearing Ring
E7770	Wearing Ring

FAQs

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

What is the FSCG of the NSN 4320-00-398-7237?

The FSCG of the NSN 4320-00-398-7237 is 4320

Does the NSN 4320-00-398-7237 have a Schedule B code assigned?

Yes, the Schedule B code is 8413919520

Does NSN 4320-00-398-7237 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 4320-00-398-7237 contain precious materials?

Precious metal content is unknown

Does NSN 4320-00-398-7237 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 4320-00-398-7237 was assigned to the Federal Catalog?

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