26-30786

View detailed technical data, stock status, and sourcing information for: 26-30786
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5330 Packing and Gasket Materials

National Stock Number

5330-00-294-3610

Item Name Code

20256

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.

counterbored straight face cross-sectional shape style, 0.154 inches minimum and 0.158 inches maximum outer edge thickness, 3.008 inches minimum and 3.010 inches maximum outside diameter, concentric ring style, 0.154 inches minimum and 0.155 inches maximum material 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: counterbored straight face
Outside Diameter: 3.008 inches minimum and 3.010 inches maximum
Material Thickness: 0.154 inches minimum and 0.155 inches maximum
Ring Style: concentric
Outer Edge Thickness: 0.154 inches minimum and 0.158 inches maximum
Joint Style: diagonal joint
Material: copper overall
Material Document And Classification: qq-b-750 fed spec single material response overall
Fsc Application Data: catapult,aircraft launching

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
26-30786	Wiper Ring

FAQs

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

What is the FSCG of the NSN 5330-00-294-3610?

The FSCG of the NSN 5330-00-294-3610 is 5330

Does the NSN 5330-00-294-3610 have a Schedule B code assigned?

Yes, the Schedule B code is 8412909005

Does NSN 5330-00-294-3610 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 5330-00-294-3610 contain precious materials?

Item does not contain precious metal.

Does NSN 5330-00-294-3610 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 5330-00-294-3610 was assigned to the Federal Catalog?

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