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PA9658 — CAP,PROTECTIVE,DUST AND MOISTURE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

PA9658: CAP,PROTECTIVE,DUST AND MOISTURE.

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include material: ALUMINUM, design_type: MOLDED, overall_width: 8.000 INCHES NOMINAL IN, overall_length: 8.000 INCHES NOMINAL IN, end_item_identification: AIM9X SPECIAL, part_name_assigned_by_controlling_agency: MOLD PROTECTOR COVER. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-627-3942, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
PA9658
NSN: 5340-01-627-3942
FSC: 5340 — Hardware, Commercial
CAGE: 15090 — RAYTHEON COMPANY (USA)
SPECIFICATIONS
materialALUMINUM
design_typeMOLDED
overall_width8.000 INCHES NOMINAL IN
overall_length8.000 INCHES NOMINAL IN
end_item_identificationAIM9X SPECIAL
part_name_assigned_by_controlling_agencyMOLD PROTECTOR COVER
opening_inside_diameter_for_which_designed3.500 INCHES NOMINAL IN
NSN5340-01-627-3942
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: PA9658 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
DESIGN TYPE: MOLDED
•
OPENING INSIDE DIAMETER FOR WHICH DESIGNED: 3.500 INCHES NOMINAL IN
•
MATERIAL: ALUMINUM
TECHNICAL CHARACTERISTICS
DESIGN TYPEMOLDED
OVERALL LENGTH8.000 INCHES NOMINAL IN
OVERALL WIDTH8.000 INCHES NOMINAL IN
OPENING INSIDE DIAMETER FOR WHICH DESIGNED3.500 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYMOLD PROTECTOR COVER
END ITEM IDENTIFICATIONAIM9X SPECIAL
MATERIALALUMINUM
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES 1
PA9658MReference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is PA9658?
PA9658 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What parts can replace PA9658?
There is 1 known substitute for PA9658: PA9658M. Substitute compatibility should be verified for your specific system.
What is the NSN for PA9658?
PA9658 is cataloged in the U.S. Government catalog under NSN 5340-01-627-3942. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.