Model: A2479-18

Preformed Packing

Properties:

Cross Sectional Shape
O-ring
Tempurature Rating
-54.0 degrees celsius and 100.0 degrees celsius
Cross Section Outside Diameter
Between 0.067 inches and 0.073 inches
Cross-sectional Height
Between 0.067 inches and 0.073 inches
Center Hole Diameter
Between 0.171 inches and 0.181 inches
Peripheral Diameter
Between 0.305 inches and 0.327 inches
Elongation Percentage
260
Hardness Rating
65.0 shore durometer a and 75.0 shore durometer a
Operating Medium
Fuel, hydrocarbon or oil or water
Color
Black
Material
Rubber butadiene-acrylonitrile class nbr
Material Specification
Mil-r-6855, class 2, type a or b, grade 70 military specification single material response
Specification Data
06275-a2479 manufacturers specification control
NSN
5330-00-513-7638
Part Number
A2479-18
Description
Packing,preformed
CAGE

A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.

Part A2479-18 NSN 5330-00-513-7638

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
04521
FIIG:
A032A0
Concept No.:
App. Key:
AC
Cond. Code:
1
Status:
A

Material Classification

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

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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

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