Model: 7866-256

O-ring

Properties:

Outside Diameter

Between 5.969 inches and 6.055 inches

Cross-sectional Height

Between 0.135 inches and 0.143 inches

Center Hole Diameter

Between 5.711 inches and 5.757 inches

Material

Rubber butadiene-acrylonitrile class nbr

NSN

5331-00-291-3312

Part Number

7866-256

Description

O-ring

CAGE

25184

A nonmetallic circular item with an aperature, having a solid round cross-section. They are used primarily for sealing. For items with other than round cross section, see packing,preformed. For noncircular items with a round cross-section, see seal,nonmetallic round section and rubber,round section.

Part 7866-256 NSN 5331-00-291-3312

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

47946

FIIG:

A510X0

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:

194120

UFC:

95100

LTL:

RATING VARIABLE

LCL:

WCC:

596

TCC:

SHC:

ACC:

Trailers/Vehicles

End Items End applications NSN 5331-00-291-3312 is a component of

Chilled Water A/c Systems
Jp-5 Aviation Fuels Systems
Ec-18b C-18a Aircraft
Los Angeles Class Ssn (688)
Fl (m10a) Truck
Kidd Class Ddg
Supply Class Aoe
Fms - Knox Class Ff
Osprey Class Mhc
Austin Ship Class Lpd-4 Amphibious Transport Docks
010543833
Fork Lift Truck
010543833
Fork Lift Truck
010414590
Self-propelled Medium Howitzer
013307876
Aircraft Engine Maintenance Fixture
009524275
Linear Electro-mechanical Actuator
004396242
Full Tracked Recovery Vehicle
004396242
Full Tracked Recovery Vehicle
005855309
Rate Of Flow Transmitter

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Schedule B and Export

Schedule B: 4016930000
SITC: 62999
End Use: Industrial rubber products
NAICS: 339991
USDA: 1

Freight Class: Gaskets, washers and other seals, of vulcanized rubber other than hard rubber