21X3951

21X3951 Plain Seal

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Quality Commitment

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Datasheet. 21X3951 specification

Cross-sectional Shape Style
The style designation indicating the configuration that most nearly corresponds to the cross-sectional shape of the item.

single lip

Temp Rating
A value which expresses the degree of heat or cold as applied to the operation,or limitation of operation,of an item.

-40.0 deg fahrenheit and 200.0 deg fahrenheit

Accommodated Shaft Diameter
The length of a straight line which passes through the center of the accommodation for the shaft,and terminates at the circumference.

8.775in. and 8.785in.

Seal Width
A measurement taken between the flat surfaces /front and back/ of the seal,in distinction from thickness.

0.760in. and 0.780in.

Housing Bore Diameter
The length of a straight line which passes through the center of a circular housing bore,and terminates at the circumference.

10.776in. and 10.782in.

Construction
The structural characteristic of the item.

split

Hardness Rating
A numeric value that reflects the hardness of an item when used in conjunction with a hardness rating scale.

80.0 shore durometer a

Color
A characteristic of light that can be specified in terms of luminance,dominant wavelength,and purity.

black

Material
The chemical compound or mechanical mixture properties of which the item is fabricated.

rubber BUTADIENE-Acrylonitrile class nbr sealing element

Material
The chemical compound or mechanical mixture properties of which the item is fabricated.

steel comp 301 spring

Answers.

What quantity is this sold in?

1EA

What material is the plain seal made of ?

Steel comp 301 spring

What material is the plain seal made of ?

Rubber butadiene-acrylonitrile class nbr sealing element

What is the NSN for 21X3951?

5330-00-055-2425

How is this classified for shipping?

Schedule B number: 3926904500
nmfc 194120
Gaskets,washers & other seals

What's the federal classification of 21X3951?

FSC 5330 ⁓ Packing and gasket materials

Note-this fsc includes only seals and gaskets designed for standard use. seals, gaskets and packing are made from materials specifically designed and constructed to resist deterioration from the action of heat, gas, chemicals, liquids, and used to fill a cavity and create a tight seal. similar materials used to make seals, gaskets, and packing are available in bulk form, refer to fsg 93, fsg 80, and fsg 83.

Excluding o-rings (fsc 5331); bulk material items, such as; rubber, cork, and asbestos sheets and strips (fsg 93); liquid gasket materials (rtv, permatex, etc.) (fsg 80); rfi and emi seals and gaskets (fsc 5999), and all seal retainers.

NSN 5330-00-055-2425 SEAL,PLAIN

NIIN
000552425
NIIN Date
05/25/67
Schedule B
3926904500 
Name Code
04250
FIIG
A032A0
Item Weight
1.300lbs
Item Dimensions
--
QUP
Historical Price
$456.00 EA
DEMIL / ITAR
Uncontrolled item (Code A)
Hazmat
No hazard information available from HMIRS.
MSDS
N/A
Precious Metals
Metal content unknown
Enviromental
N/A
Electrostatic ESD & EMI
No ESD or EMI sensitivity

Other Part Numbers Parts with same form, fit, and function by other manufacturers

1. 25003-5525 Cage 73680
2. E080SA42026PC61 Cage 07309
3. 23X5525 Cage 73680

Major End Users Countries and entities

  • - Department of The Navy 
  • - Brazil 
  • - Spain 
  • - Malaysia 

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Shipping Information

Special Handling
Other or no special handling required (sh) 
LTL (less than a truck load rating)
Rating variable 
LCL (less than a car load rating)
Unknown
Special Cargo
No special type of cargo code applicable 
Air Freight (Minimum cargo door size required)
Shipment is not a consolidation and does not exceed 84 inches in any dimension. 
Customs Requirement Classification
Trailers, vehicles, machinery, shop and warehouse equipment and supplies including special tools and equipment, ground servicing 
Commodity (for shipments via water)
Gaskets, (machinery and parts),(less than 35 feet) 
NMFC (national motor freight code)
194120 WASHERS/GASKETS/PCKG DVCS NOI 
UFC (universal freight code)
95100 

Similar by Design Other seals with similar characteristics

Nothing similar to this part number was found in our inventory

21X3951 / Seal,plainWhat is the formal definition of this item?

A pliable rubber or composition ring-shaped element, split or jointless (solid) not encased in a metal shell, but having a spring, spreader and/or molded-in reinforcement. it is designed to be pressmounted between fixed and movable or moving parts to form a tight and effective seal.