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Technical Data Sheet
221789 ✓ Verified by PartsTable
Hama · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

If you're a music fan and don't want any interference from outside noise, then the "Gloss II" is the right choice for you. An earphone without any sophisticated frills. Just pure music!<br><br><b>Passive noise suppression</b><br>The perfect fit reduces unwanted exterior noise so that you can enjoy your music without being disturbed<br><br><b>Silicone attachments in 3 sizes</b><br>Earplugs included: two silicone attachments each in three sizes (S, M, L) for an individual, perfect fit This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-612-4060, indicating validated use in U.S.

government and defense logistics supply chains.

WHERE IT FITS
221789
NSN: 5330-00-612-4060
FSC: 5330
CAGE: 16583 — GH BETTIS A GALVESTON-HOUSTON CO (USA)
SPECIFICATIONS
materialPLASTIC OVERALL
outside_diameter1.190 INCHES NOMINAL IN
style_designatorCIRCULAR
aperture_diameter0.770 INCHES NOMINAL IN
cross-sectional_thickness0.060 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classificationMIL-M-20693 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5330-00-612-4060
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 221789 MFR: Hama ⚠ 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
STYLE DESIGNATOR: CIRCULAR
APERTURE DIAMETER: 0.770 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
CROSS-SECTIONAL THICKNESS: 0.060 INCHES NOMINAL IN
OUTSIDE DIAMETER: 1.190 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-M-20693 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL: PLASTIC OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORCIRCULAR
APERTURE DIAMETER0.770 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
CROSS-SECTIONAL THICKNESS0.060 INCHES NOMINAL IN
OUTSIDE DIAMETER1.190 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-M-20693 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALPLASTIC OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
000414VInterchangeable
interchangeable cross-reference
interchangeable
75W2-318ID 72IN.LGInterchangeable
interchangeable cross-reference
interchangeable
75WInterchangeable
interchangeable cross-reference
interchangeable
20267 PC 13Interchangeable
interchangeable cross-reference
interchangeable
30501Interchangeable
interchangeable cross-reference
interchangeable
301528Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 221789?
221789 is a GASKET manufactured by Hama.
What parts can replace 221789?
There are 6 known substitutes for 221789: 000414V, 75W2-318ID 72IN.LG, 75W and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 221789?
221789 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-612-4060. This indicates validated use in U.S. government and defense supply chains.
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