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978649-1 — RUBBER ROUND SECTION

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

978649-1: RUBBER ROUND SECTION.

The RUBBER ROUND SECTION is a the manufacturer industrial component. Key specifications include end_item_identification: 5820-01-148-3976RADIO TERMINAL SET, cross-sectional_shape_style: CIRCULAR W/ CENTER APERTURE, cross_section_inside_diameter: 4.000 INCHES NOMINAL IN, cross_section_outside_diameter: 5.780 INCHES NOMINAL IN, material_document_and_classification: MIL-R-6855 MIL SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-232-8978, 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
978649-1
NSN: 5330-01-232-8978
FSC: 5330 — Packing and Gasket Materials
CAGE: 3B150 — RAYTHEON COMPANY DBA RAYTHEON CO (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OR RUBBER CHLOROPRENE CLASS CR OR RUBBER BUTADIENE-STYRENE CLASS SBR LOCATION NOT OTHERWISE SPECIFIED
end_item_identification5820-01-148-3976RADIO TERMINAL SET
cross-sectional_shape_styleCIRCULAR W/ CENTER APERTURE
cross_section_inside_diameter4.000 INCHES NOMINAL IN
cross_section_outside_diameter5.780 INCHES NOMINAL IN
material_document_and_classificationMIL-R-6855 MIL SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
NSN5330-01-232-8978
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 978649-1 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-6855 MIL SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
•
CROSS-SECTIONAL SHAPE STYLE: CIRCULAR W/ CENTER APERTURE
•
CROSS SECTION INSIDE DIAMETER: 4.000 INCHES NOMINAL IN
•
CROSS SECTION OUTSIDE DIAMETER: 5.780 INCHES NOMINAL IN
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OR RUBBER CHLOROPRENE CLASS CR OR RUBBER BUTADIENE-STYRENE CLASS SBR LOCATION NOT OTHERWISE SPECIFIED
TECHNICAL CHARACTERISTICS
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-6855 MIL SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
CROSS-SECTIONAL SHAPE STYLECIRCULAR W/ CENTER APERTURE
CROSS SECTION INSIDE DIAMETER4.000 INCHES NOMINAL IN
CROSS SECTION OUTSIDE DIAMETER5.780 INCHES NOMINAL IN
END ITEM IDENTIFICATION5820-01-148-3976RADIO TERMINAL SET
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OR RUBBER CHLOROPRENE CLASS CR OR RUBBER BUTADIENE-STYRENE CLASS SBR LOCATION NOT OTHERWISE SPECIFIED
OTHER ITEMS IN FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085 5330-00-000-0167 5330-00-000-5275 5330-00-001-1260 5330-00-001-1833 5330-00-001-1844 5330-00-001-1845 5330-00-001-1846
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 978649-1?
978649-1 is a RUBBER ROUND SECTION.
What is the NSN for 978649-1?
978649-1 is cataloged in the U.S. Government catalog under NSN 5330-01-232-8978. This indicates validated use in U.S. government and defense supply chains.
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