Model: 56991

Metal Seal Ring

Properties:

Cross Sectional Shape

Plain rectangular, straight face

Inside Diameter

1.549 inches

Ring Style

Contracting concentric

Radial Wall Thickness

Between 0.0570 inches and 0.0630 inches

Overall Width

Between 0.0610 inches and 0.0620 inches

Joint Style

Vertical joint

Metallic Hardness Rating

41.0 rockwell c

Material

Steel, koppers k-13, fscm 75370

Fsc Application Data

Engine, aircraft

Reference Number Differentiating Characteristics

As differentiated by dwg no. 6865428, fscm73342

NSN

5330-00-825-5109

Part Number

56991

Description

Seal Ring,metal

CAGE

80592

A circular shaped item designed to be installed in a specially prepared groove or counterbore to provide a low pressure seal. It may be supplied in various cross-sectional shapes and is cut through at one point to allow for installation and fitting. Excludes items whose primary function is to provide sealing, wiping, or wearing surface capabilities for piston configurations. See also ring, piston and ring, wiper.

Part 56991 NSN 5330-00-825-5109

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

21205

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:

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Schedule B and Export

Schedule B: 3926904500
SITC: 89399
End Use: Other industrial supplies
NAICS: 339991
USDA: 1

Freight Class: Gaskets,washers & other seals