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Technical Data Sheet
PartsTable / O-RING / 905819-01
905819-01 ✓ 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 O-RING is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, special_features: COMPOSED OF TWO FLANGED HALVES BOLTED TOGETHER, material_document_and_classification: QQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-185-0075, 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
905819-01
NSN: 5331-00-185-0075
FSC: 5331 — O-RING
CAGE: 90536 — LOCKHEED MARTIN CORP DBA LOCKHEED MARTIN DIV MST - EAGAN (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
special_featuresCOMPOSED OF TWO FLANGED HALVES BOLTED TOGETHER
material_document_and_classificationQQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5331-00-185-0075
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 905819-01 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: RUBBER SYNTHETIC
•
CENTER HOLE DIAMETER: 0.171 INCHES MINIMUM AND 0.181 INCHES MAXIMUM IN
•
TEMP RATING: -35.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
•
HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL
•
OUTSIDE DIAMETER: 0.305 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN
•
CROSS-SECTIONAL HEIGHT: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER SYNTHETIC
CENTER HOLE DIAMETER0.171 INCHES MINIMUM AND 0.181 INCHES MAXIMUM IN
TEMP RATING-35.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
HARDNESS RATING70.0 SHORE DUROMETER A NOMINAL
OUTSIDE DIAMETER0.305 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
31-052Interchangeable
interchangeable cross-reference
interchangeable
GGG-W-636 TY5Interchangeable
interchangeable cross-reference
interchangeable
56480Interchangeable
interchangeable cross-reference
interchangeable
2-008C557-70Interchangeable
interchangeable cross-reference
interchangeable
SKM-1130-2Interchangeable
interchangeable cross-reference
interchangeable
2-008-C557-7Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 905819-01?
905819-01 is a O-RING.
What parts can replace 905819-01?
There are 19 known substitutes for 905819-01: 31-052, GGG-W-636 TY5, 56480 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 905819-01?
905819-01 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-185-0075. 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