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Technical Data Sheet
PartsTable / O-RING / DR172/46 ITEM-2
DR172/46 ITEM-2 ✓ 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 DR172/46 ITEM-2 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-323-1080, 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
DR172/46 ITEM-2
NSN: 5331-01-323-1080
FSC: 5331 — O-RING
CAGE: 1TH76 — ROLLS-ROYCE MARINE NORTH AMERICA INC (USA)
SPECIFICATIONS
Part NumberDR172/46 ITEM-2
NSN5331-01-323-1080
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: DR172/46 ITEM-2 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
A21970Interchangeable
interchangeable cross-reference
interchangeable
B75-3Interchangeable
interchangeable cross-reference
interchangeable
10099Interchangeable
interchangeable cross-reference
interchangeable
940 1-19/32Interchangeable
interchangeable cross-reference
interchangeable
20138Interchangeable
interchangeable cross-reference
interchangeable
P360Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is DR172/46 ITEM-2?
DR172/46 ITEM-2 is a DR172/46 ITEM-2.
What parts can replace DR172/46 ITEM-2?
There are 23 known substitutes for DR172/46 ITEM-2: A21970, B75-3, 10099 and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for DR172/46 ITEM-2?
DR172/46 ITEM-2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-323-1080. 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