MS28782-33CP

MS2878233CP Preformed Packing Back-up Ring

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Datasheet. MS28782-33CP specification

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

double spiral

Cross-sectional Thickness
A measurement of the smallest dimension of a cross section,in distinction from length or width.

0.031in. and 0.036in.

Cross-sectional Height
A measurement from the bottom to the top of a cross section,in distinction from depth.

0.093in. and 0.108in.

Center Hole Diameter
The length of a straight line which passes through the center of the center hole,and terminates at the circumference.

2.125in.

Peripheral Diameter

2.493in. and 2.497in.

End Item Identification
The national stock number or the identification information of the end equipment for which the item is a part.

seawolf class submarine

Criticality Code Justification
The master requirement codes of those requirements which are technically critical by reason of tolerance,fit,performance,or other characteristics which affect identification of the item.

zzzy

Part Name Assigned By Controlling Agency
The name assigned to the item by the government agency or commercial organization controlling the design of the item.

retainer, packing BACK-Up

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

plastic polytetrafluoroethylene

Material Document And Classification
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.

MIL-R-8791 mil spec single material response

Reference Number Differentiating Characteristics
A feature of the item of supply which must be specifically recorded when the reference number covers a range of items.

special clean for oxygen/nitrogen service

Answers.

What material is the preformed packing back-up ring made of ?

Plastic polytetrafluoroethylene

What is the NSN for MS28782-33CP?

5330-01-528-8575

What's the federal classification of MS28782-33CP?

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 5330-01-528-8575 BACK-UP RING,PREFORMED PACKING

Used on seawolf class submarine. retainer, packing back-up 2.125" center hole diameter

NIIN
015288575
NIIN Date
03/28/05
Schedule B
 
Name Code
66949
FIIG
A528B0
Item Weight
0.000lbs
Item Dimensions
--
QUP
 
Historical Price
$26.33 EA
DEMIL / ITAR
Uncontrolled item (Code A)
Hazmat
No hazard information available from HMIRS.
MSDS
N/A
Precious Metals
No precious metals
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. 211007865CP Cage 03950
2. 801-6404589 FIND 13CP Cage 03950
3. DF330618 FIND 13CP Cage 03950
4. CD-023-35-13CP Cage 03950

Major End Users Countries and entities

  • - Department of The Navy 

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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
Construction materials: includes paint and related materials, prefabricated building, wood products, metal and composition mater 
Commodity (for shipments via water)
Gaskets, (machinery and parts),(less than 35 feet) 
NMFC (national motor freight code)
095190 HARDWARE, NOI 
UFC (universal freight code)
49790 

Similar by Design Other back-up rings with similar characteristics

Nothing similar to this part number was found in our inventory

MS28782-33CP / Back-up ring,preformed packingWhat is the formal definition of this item?

A circular shaped item with an aperture manufactured to predetermined dimensions, constructed with a rectangular cross section that may be solid, with joint, or in a helical form that facilitates spiral wrap installation. it prevents seal extrusion under pressure and is designed to fit on the down-pressure side of a gland groove with a packing, preformed or o-ring.