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7543156 — CAP,PROTECTIVE,DUST AND MOISTURE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

7543156: CAP,PROTECTIVE,DUST AND MOISTURE.

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include material: ALUMINUM ALLOY, design_type: FRICTION, special_features: HAS A FERRULE AND CABLE,0.040 INCH DIA X 21 IN. LONG,ATTACHED IN, end_item_identification: P/N 7542654,6,7,OR 9;B-1B OSE45A52C, round_cap_outside_surface_condition: KNURLED, material_document_and_classification: QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE.

This part is cataloged in the U.S. Government catalog under NSN 5340-01-312-9069, 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
7543156
NSN: 5340-01-312-9069
FSC: 5340 — Hardware, Commercial
CAGE: 05228 — PTI TECHNOLOGIES INC. (USA)
SPECIFICATIONS
materialALUMINUM ALLOY
design_typeFRICTION
special_featuresHAS A FERRULE AND CABLE,0.040 INCH DIA X 21 IN. LONG,ATTACHED IN
end_item_identificationP/N 7542654,6,7,OR 9;B-1B OSE45A52C
round_cap_outside_surface_conditionKNURLED
material_document_and_classificationQQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE
NSN5340-01-312-9069
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 7543156 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: FRICTION
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE
•
MATERIAL: ALUMINUM ALLOY
•
ROUND CAP OUTSIDE SURFACE CONDITION: KNURLED
TECHNICAL CHARACTERISTICS
DESIGN TYPEFRICTION
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE
SPECIAL FEATURESHAS A FERRULE AND CABLE,0.040 INCH DIA X 21 IN. LONG,ATTACHED IN
END ITEM IDENTIFICATIONP/N 7542654,6,7,OR 9;B-1B OSE45A52C
MATERIALALUMINUM ALLOY
ROUND CAP OUTSIDE SURFACE CONDITIONKNURLED
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 7543156?
7543156 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What is the NSN for 7543156?
7543156 is cataloged in the U.S. Government catalog under NSN 5340-01-312-9069. 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.