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Technical Data Sheet
A8820 ✓ 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 VENT ASSY,BREATHER is a the manufacturer industrial component. Key specifications include material: PAPER AND GLUE OVERALL, hole_diameter: 0.167 INCHES MINIMUM AND 0.171 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 1.687 INCHES NOMINAL IN, overall_length: 1.687 INCHES NOMINAL IN, cross-sectional_thickness: 0.031 INCHES NOMINAL IN, cross-sectional_shape_style: SOLID SINGLE OR COMPOSITION. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-085-3749, 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
A8820
NSN: 5330-00-085-3749
FSC: 5330
CAGE: 96787 — STEWART AVIONICS INC (USA)
SPECIFICATIONS
materialPAPER AND GLUE OVERALL
hole_diameter0.167 INCHES MINIMUM AND 0.171 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
overall_width1.687 INCHES NOMINAL IN
overall_length1.687 INCHES NOMINAL IN
cross-sectional_thickness0.031 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classificationMIL-G-12803,NO. +3313-B MIL SPEC ALL MATERIAL RESPONSES OVERALL
NSN5330-00-085-3749
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A8820 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: PAPER AND GLUE OVERALL
CROSS-SECTIONAL THICKNESS: 0.031 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-12803,NO. +3313-B MIL SPEC ALL MATERIAL RESPONSES OVERALL
HOLE DIAMETER: 0.167 INCHES MINIMUM AND 0.171 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
MATERIALPAPER AND GLUE OVERALL
CROSS-SECTIONAL THICKNESS0.031 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-12803,NO. +3313-B MIL SPEC ALL MATERIAL RESPONSES OVERALL
OVERALL LENGTH1.687 INCHES NOMINAL IN
OVERALL WIDTH1.687 INCHES NOMINAL IN
HOLE DIAMETER0.167 INCHES MINIMUM AND 0.171 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
1523Interchangeable
interchangeable cross-reference
interchangeable
5550Interchangeable
interchangeable cross-reference
interchangeable
20-1000H-02B-200Interchangeable
interchangeable cross-reference
interchangeable
23KCInterchangeable
interchangeable cross-reference
interchangeable
324119-2Interchangeable
interchangeable cross-reference
interchangeable
10215944Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A8820?
A8820 is a VENT ASSY,BREATHER.
What parts can replace A8820?
There are 19 known substitutes for A8820: 1523, 5550, 20-1000H-02B-200 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A8820?
A8820 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-085-3749. This indicates validated use in U.S. government and defense supply chains.
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