Piston Ring

Model / MPN: 990505-11 | NSN: 4310-00-039-5087

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.

Product Details

NATO Stock Number

4310-00-039-5087

Sold in multiples of

1 EA

DEMIL

Cross Sectional Shape

Plain rectangular, straight face

Ring Style

Concentric

Radial Wall Thickness

0.1250 inches

Overall Width

0.2470 inches

Standard Bore Diameter

5.936 inches

Joint Style

Diagonal joint

Criticality Code Justification

Feat

Material

Copper alloy top inside periphery

Nuclear Hardness Critical Feature

Hardened

990505 Series Parts

Solicitations

Solicitation	Description	Qty	UOM	Close Date
SPE7M117TD610	Ring, Piston	18	EA	04/20/2017
SPE7M118T0603	Ring, Piston	5	EA	10/20/2017
SPE7M118T2817	Ring, Piston	8	EA	11/16/2017

Pricing and Availability

Send us a request for quote using the form below. Our team will contact you with an up to date pricing and availability quote ASAP.

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ISO 9001:2015 + AS9120B
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990505-11 Cross Reference

990505-11