PartsTable
Technical Data Sheet
NAS844-18 ✓ Verified by PartsTable
· ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include material: PLASTIC, design_type: FRICTION, overall_diameter: 1.300 INCHES MINIMUM AND 1.390 INCHES MAXIMUM IN, inside_diameter_length: 0.880 INCHES MINIMUM AND 1.120 INCHES MAXIMUM IN, round_cap_outside_surface_condition: SMOOTH, material_document_and_classification: L-P-390, TYPE 1, CLASS L, GRADE 1 OR GRADE 2 FED SPEC SINGLE MATERIAL RESPONSE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-208-7825, 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
NAS844-18
NSN: 5340-01-208-7825
FSC: 5340
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
materialPLASTIC
design_typeFRICTION
overall_diameter1.300 INCHES MINIMUM AND 1.390 INCHES MAXIMUM IN
inside_diameter_length0.880 INCHES MINIMUM AND 1.120 INCHES MAXIMUM IN
round_cap_outside_surface_conditionSMOOTH
material_document_and_classificationL-P-390, TYPE 1, CLASS L, GRADE 1 OR GRADE 2 FED SPEC SINGLE MATERIAL RESPONSE
tube_outside_diameter_for_which_designed1.240 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
NSN5340-01-208-7825
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: NAS844-18 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
MATERIAL: PLASTIC
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 1.240 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
INSIDE DIAMETER LENGTH: 0.500 INCHES MINIMUM AND 0.740 INCHES MAXIMUM IN
ROUND CAP OUTSIDE SURFACE CONDITION: SMOOTH
OVERALL DIAMETER: 1.300 INCHES MINIMUM AND 1.390 INCHES MAXIMUM IN
DESIGN TYPE: FRICTION
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALPLASTIC
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED1.240 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
INSIDE DIAMETER LENGTH0.500 INCHES MINIMUM AND 0.740 INCHES MAXIMUM IN
ROUND CAP OUTSIDE SURFACE CONDITIONSMOOTH
OVERALL DIAMETER1.300 INCHES MINIMUM AND 1.390 INCHES MAXIMUM IN
DESIGN TYPEFRICTION
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
125010Upgraded Successor
successor cross-reference
successor
NAS847Upgraded Successor
successor cross-reference
successor
MIL-C-5501/7Upgraded Successor
successor cross-reference
successor
M5501/7-F24Upgraded Successor
successor cross-reference
successor
AEP1543-2Upgraded Successor
successor cross-reference
successor
EC14Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NAS844-18?
NAS844-18 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What parts can replace NAS844-18?
There are 25 known substitutes for NAS844-18: 125010, NAS847, MIL-C-5501/7 and 22 more. Substitute compatibility should be verified for your specific system.
Is NAS844-18 still available?
NAS844-18 is currently cancelled.
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