25J749PC8

View detailed technical data, stock status, and sourcing information for: 25J749PC8
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5330 Packing and Gasket Materials

National Stock Number

5330-00-273-0620

Item Name Code

21205

Assigment Date

01/01/1963 (63 years ago)

A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes:packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.

0.2480 inches minimum and 0.2490 inches maximum overall width, plain rectangular, straight face cross-sectional shape style, expanding concentric ring style, 0.1800 inches minimum and 0.2000 inches maximum radial wall thickness, 5.250 inches nominal outside diameter

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
Outside Diameter: 5.250 inches nominal
Ring Style: expanding concentric
Radial Wall Thickness: 0.1800 inches minimum and 0.2000 inches maximum
Overall Width: 0.2480 inches minimum and 0.2490 inches maximum
Joint Style: diagonal joint
Material: iron overall
Material Document And Classification: qq-i-652,class 30 fed spec single material response overall
Fsc Application Data: steam 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
1389662	Metal Seal Ring
25J749PC8	Metal Seal Ring
26J243PC42	Metal Seal Ring
26J52PC99	Metal Seal Ring
26J81PC42	Metal Seal Ring

FAQs

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

What is the FSCG of the NSN 5330-00-273-0620?

The FSCG of the NSN 5330-00-273-0620 is 5330

Does the NSN 5330-00-273-0620 have a Schedule B code assigned?

Yes, the Schedule B code is 3926904500

Does NSN 5330-00-273-0620 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 5330-00-273-0620 contain precious materials?

Precious metal content is unknown

Does NSN 5330-00-273-0620 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 5330-00-273-0620 was assigned to the Federal Catalog?

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