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311043-1 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

311043-1: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 6061, outside_diameter: 7.610 INCHES MINIMUM AND 7.640 INCHES MAXIMUM IN, surface_treatment: CHROMATE, peripheral_shape_style: ROUND, MULTI HOLES, material_document_and_classification: QQ-A-250/11 FED SPEC SINGLE MATERIAL RESPONSE, surface_treatment_document_and_classification: MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-303-9981, 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
311043-1
NSN: 5340-01-303-9981
FSC: 5340 — Hardware, Commercial
CAGE: 30595 — TITAN CORPORATION DBA DBA SYSTEMS (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061
outside_diameter7.610 INCHES MINIMUM AND 7.640 INCHES MAXIMUM IN
surface_treatmentCHROMATE
peripheral_shape_styleROUND, MULTI HOLES
material_document_and_classificationQQ-A-250/11 FED SPEC SINGLE MATERIAL RESPONSE
surface_treatment_document_and_classificationMIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE
NSN5340-01-303-9981
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 311043-1 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-250/11 FED SPEC SINGLE MATERIAL RESPONSE
•
OUTSIDE DIAMETER: 7.610 INCHES MINIMUM AND 7.640 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CHROMATE
•
PERIPHERAL SHAPE STYLE: ROUND, MULTI HOLES
•
MATERIAL: ALUMINUM ALLOY 6061
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/11 FED SPEC SINGLE MATERIAL RESPONSE
OUTSIDE DIAMETER7.610 INCHES MINIMUM AND 7.640 INCHES MAXIMUM IN
SURFACE TREATMENTCHROMATE
PERIPHERAL SHAPE STYLEROUND, MULTI HOLES
MATERIALALUMINUM ALLOY 6061
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

No substitute or cross-reference records for this part.

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 311043-1?
311043-1 is a COVER,ACCESS.
What is the NSN for 311043-1?
311043-1 is cataloged in the U.S. Government catalog under NSN 5340-01-303-9981. This indicates validated use in U.S. government and defense supply chains.
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