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Datasheet. 851881-1 specification
The national stock number or the identification information of the end equipment for which the item is a part.
40 lightning/40 lightning xr 40 seapro/marathon
The name assigned to the item by the government agency or commercial organization controlling the design of the item.
BACK-Up ring
The justification for the assignment of a federal supply class /fsc/ to an item based on the classification of the next higher classifiable assembly.
nha power trim assembly 851873A1
Answers.
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 5330-01-537-3693 BACK-UP RING,PREFORMED PACKING
Used on 40 lightning/40 lightning xr 40 seapro/marathon. back-up ring
- NIIN
- 015373693
- NIIN Date
- 02/03/06
- Schedule B
- Name Code
- 66949
- FIIG
- A528B0
- 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
Major End Users Countries and entities
- - Australia
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851881-1 / 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.
