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A7522 ✓ 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

The COVER,ELECTRICAL CONNECTOR is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYAMIDE NYLON OVERALL, overall_width: 0.438 INCHES NOMINAL IN, overall_height: 0.312 INCHES NOMINAL IN, overall_length: 1.031 INCHES NOMINAL IN, outside_diameter: 0.660 INCHES NOMINAL IN, style_designator: CIRCULAR. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-126-0048, 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
A7522
NSN: 5330-00-126-0048
FSC: 5330
CAGE: 41947 — MUELLER BRASS CO. (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON OVERALL
overall_width0.438 INCHES NOMINAL IN
overall_height0.312 INCHES NOMINAL IN
overall_length1.031 INCHES NOMINAL IN
outside_diameter0.660 INCHES NOMINAL IN
style_designatorCIRCULAR
aperture_diameter0.510 INCHES NOMINAL IN
surface_treatmentANODIZE
cross-sectional_thickness0.041 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
unthreaded_mounting_hole_diameter0.047 INCHES NOMINAL IN
mounting_facility_type_and_quantity1 TAB AND 2 UNTHREADED HOLE(S)
NSN5330-00-126-0048
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A7522 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
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
MATERIAL: PLASTIC POLYAMIDE NYLON OVERALL
•
OUTSIDE DIAMETER: 0.660 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CIRCULAR
•
APERTURE DIAMETER: 0.510 INCHES NOMINAL IN
•
CROSS-SECTIONAL THICKNESS: 0.041 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
MATERIALPLASTIC POLYAMIDE NYLON OVERALL
OUTSIDE DIAMETER0.660 INCHES NOMINAL IN
STYLE DESIGNATORCIRCULAR
APERTURE DIAMETER0.510 INCHES NOMINAL IN
CROSS-SECTIONAL THICKNESS0.041 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
SM-B-157087Interchangeable
interchangeable cross-reference
interchangeable
A7522Interchangeable
interchangeable cross-reference
interchangeable
813LXInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A7522?
A7522 is a COVER,ELECTRICAL CONNECTOR.
What parts can replace A7522?
There are 3 known substitutes for A7522: SM-B-157087, A7522, 813LX. Substitute compatibility should be verified for your specific system.
What is the NSN for A7522?
A7522 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-126-0048. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026