Model: XM18-C1791-4.5R1

Piston Ring

Special Features:

Compressor. Ssr name is compression ring

Properties:

End Application

Boost compressor assembly

Criticality Code Justification

Zzzy

Part Name Assigned By Controlling Agency

Comp ring 9/16 inch, 9/16 inch c = .074 rulon 945

Reference Number Differentiating Characteristics

Cleaning, packaging, and marking iaw mil-std-1330d

NSN

4310-01-571-2458

Part Number

XM18-C1791-4.5R1

Description

Ring,piston

CAGE

28953

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.

Part XM18-C1791-4.5R1 NSN 4310-01-571-2458

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

11459

FIIG:

A08400

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

126700

UFC:

64230

LTL:

85.0

LCL:

77.5

WCC:

594

TCC:

SHC:

ACC:

Trailers/Vehicles

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Schedule B and Export

Schedule B: 8414902095
SITC: 74380
End Use: Industrial engines
NAICS: 333912
USDA: 1

Freight Class: Parts nesoi, of compressors other than refrigerating and air conditioning compressors