Model: HM20379A

Piston Ring

Properties:

Cross Sectional Shape
Inside counterbore, two filled grooves, straight face scraper
Ring Style
Concentric
Radial Wall Thickness
Between 0.2020 inches and 0.2120 inches
Overall Width
Between 0.0930 inches and 0.0935 inches
Standard Bore Diameter
4.250 inches
Joint Style
Vertical joint
Material
Iron
Surface Treatment
Lead
NSN
2805-00-278-1910
Part Number
HM20379A
Description
Ring,piston
CAGE
77237

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 HM20379A NSN 2805-00-278-1910

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
11459
FIIG:
A08400
Concept No.:
App. Key:
A
Cond. Code:
2
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
SU
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.8000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
126700
UFC:
64230
LTL:
85.0
LCL:
77.5
WCC:
594
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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Schedule B and Export
  • Schedule B: 8409918000
  • SITC: 71391
  • End Use: Industrial engines
  • NAICS: 333618
  • USDA: 1

Freight Class: Parts for spark-ignition internal combustion piston engines, nesoi

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