PartsTable
Technical Data Sheet
PartsTable / O-RING / 845-2181262PC13,1/2IN
845-2181262PC13,1/2IN ✓ 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 845-2181262PC13,1/2IN 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 5331-00-913-4697, 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
845-2181262PC13,1/2IN
NSN: 5331-00-913-4697
FSC: 5331 — O-RING
CAGE: 80064 — NAVAL SHIP SYSTEMS COMMAND (USA)
SPECIFICATIONS
Part Number845-2181262PC13,1/2IN
NSN5331-00-913-4697
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 845-2181262PC13,1/2IN 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
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
OUTSIDE DIAMETER: 1.887 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 1.599 INCHES MINIMUM AND 1.619 INCHES MAXIMUM IN
•
ELONGATION PERCENTAGE: 160 MAXIMUM
•
CROSS-SECTIONAL HEIGHT: 0.139 INCHES NOMINAL IN
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: AS DIFFERENTIATED BY MATERIAL IN ACCORDANCE WITH ACTIVITY HXQUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
•
TEMP RATING: -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
TECHNICAL CHARACTERISTICS (FLIS)
CRITICALITY CODE JUSTIFICATIONZZZY
OUTSIDE DIAMETER1.887 INCHES NOMINAL IN
CENTER HOLE DIAMETER1.599 INCHES MINIMUM AND 1.619 INCHES MAXIMUM IN
ELONGATION PERCENTAGE160 MAXIMUM
CROSS-SECTIONAL HEIGHT0.139 INCHES NOMINAL IN
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSAS DIFFERENTIATED BY MATERIAL IN ACCORDANCE WITH ACTIVITY HXQUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
TEMP RATING-65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
1866-1Interchangeable
interchangeable cross-reference
interchangeable
6230-1Interchangeable
interchangeable cross-reference
interchangeable
BUNA-N-223Interchangeable
interchangeable cross-reference
interchangeable
MS28775-222Interchangeable
interchangeable cross-reference
interchangeable
N304-75-222Interchangeable
interchangeable cross-reference
interchangeable
0619799Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 845-2181262PC13,1/2IN?
845-2181262PC13,1/2IN is a 845-2181262PC13,1/2IN.
What parts can replace 845-2181262PC13,1/2IN?
There are 29 known substitutes for 845-2181262PC13,1/2IN: 1866-1, 6230-1, BUNA-N-223 and 26 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 845-2181262PC13,1/2IN?
845-2181262PC13,1/2IN is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-913-4697. 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