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RNG303 — PACKING,PREFORMED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

RNG303: PACKING,PREFORMED.

The PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC OVERALL, hardness_rating: 35.0 SHORE DUROMETER A MINIMUM AND 45.0 SHORE DUROMETER A MAXIMUM OVERALL, center_hole_diameter: 7.906 INCHES MINIMUM AND 7.937 INCHES MAXIMUM IN, cross-sectional_height: 0.562 INCHES MINIMUM AND 0.593 INCHES MAXIMUM IN, cross-sectional_shape_style: CIRCULAR W/ APERTURE, material_document_and_classification: MIL-R-3065 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-690-0131, 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
RNG303
NSN: 5330-00-690-0131
FSC: 5330 — Packing and Gasket Materials
CAGE: 60532 — TRANE U.S. INC. DBA THE TRANE CO DIV TRANE HEADQUARTERS (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC OVERALL
hardness_rating35.0 SHORE DUROMETER A MINIMUM AND 45.0 SHORE DUROMETER A MAXIMUM OVERALL
center_hole_diameter7.906 INCHES MINIMUM AND 7.937 INCHES MAXIMUM IN
cross-sectional_height0.562 INCHES MINIMUM AND 0.593 INCHES MAXIMUM IN
cross-sectional_shape_styleCIRCULAR W/ APERTURE
material_document_and_classificationMIL-R-3065 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5330-00-690-0131
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: RNG303 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 HEIGHT: 0.562 INCHES MINIMUM AND 0.593 INCHES MAXIMUM IN
•
HARDNESS RATING: 35.0 SHORE DUROMETER A MINIMUM AND 45.0 SHORE DUROMETER A MAXIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-3065 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: CIRCULAR W/ APERTURE
•
CENTER HOLE DIAMETER: 7.906 INCHES MINIMUM AND 7.937 INCHES MAXIMUM IN
•
MATERIAL: RUBBER SYNTHETIC OVERALL
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.562 INCHES MINIMUM AND 0.593 INCHES MAXIMUM IN
HARDNESS RATING35.0 SHORE DUROMETER A MINIMUM AND 45.0 SHORE DUROMETER A MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-3065 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLECIRCULAR W/ APERTURE
CENTER HOLE DIAMETER7.906 INCHES MINIMUM AND 7.937 INCHES MAXIMUM IN
MATERIALRUBBER SYNTHETIC OVERALL
SUBSTITUTES & CROSS-REFERENCES 5
64C1006Reference document
Same NSN cross-reference
Reference document — Secondary reference
RNG00302Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
115-8236Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
711327Reference document
Same NSN cross-reference
Reference document — Secondary reference
5130-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Shelf-life managedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is RNG303?
RNG303 is a PACKING,PREFORMED.
What parts can replace RNG303?
There are 5 known substitutes for RNG303: 64C1006, RNG00302, 115-8236 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for RNG303?
RNG303 is cataloged in the U.S. Government catalog under NSN 5330-00-690-0131. 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.