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Part Number

Part Number:
NSN:
NIIN:
Item Name:
BACK-UP RING , PREFORMED PACKING

Definition:

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.

CAGE Information

Code Company
1W506 CARLETON TECHNOLOGIES INC DIV TAMPA

Federal Supply Class

Title

PACKING AND GASKET MATERIALS

Inclusions:

INCLUDES GENERAL PURPOSE OIL GREASE, AIR, LIQUID, GAS, AND CHEMICAL SEALS; OAKUM; PREFABRICATED GASKETS AND SEALS DESIGNED FOR A SINGLE SPECIFIC APPLICATION.

Exclusions:

EXCLUDES 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.

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
CRTL CRITICALITY CODE JUSTIFICATION ZZZY
AGAV END ITEM IDENTIFICATION VALVE, REGULATOR.
ADVN CROSS-SECTIONAL HEIGHT 0.052 INCHES NOMINAL
MATT MATERIAL PLASTIC POLYTETRAFLUOROETHYLENE
ADYT CENTER HOLE DIAMETER 0.148 INCHES NOMINAL
ZZZY REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D.
FEAT SPECIAL FEATURES I.D. 0.626; THICKNESS 0.148; O.D. 0.052
AAGR CROSS-SECTIONAL SHAPE STYLE SOLID
ADYU PERIPHERAL DIAMETER 0.626 INCHES NOMINAL

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