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Technical Data Sheet
514902-18 ✓ 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 PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL, temp_rating: -20.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF, hardness_rating: 88.0 SHORE DUROMETER A NOMINAL OVERALL, peripheral_diameter: 2.498 INCHES MINIMUM AND 2.502 INCHES MAXIMUM IN, center_hole_diameter: 2.123 INCHES MINIMUM AND 2.127 INCHES MAXIMUM IN, cross-sectional_height: 0.312 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-146-2691, 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
514902-18
NSN: 5330-00-146-2691
FSC: 5330
CAGE: 80020 — NAVAL AIR WARFARE CENTER AIRCRAFT DIVISION JOINT BASE JBMDL (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
temp_rating-20.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
hardness_rating88.0 SHORE DUROMETER A NOMINAL OVERALL
peripheral_diameter2.498 INCHES MINIMUM AND 2.502 INCHES MAXIMUM IN
center_hole_diameter2.123 INCHES MINIMUM AND 2.127 INCHES MAXIMUM IN
cross-sectional_height0.312 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN
cross-sectional_shape_styleU
NSN5330-00-146-2691
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 514902-18 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
PERIPHERAL DIAMETER: 2.498 INCHES MINIMUM AND 2.502 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT: 0.312 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN
CENTER HOLE DIAMETER: 2.123 INCHES MINIMUM AND 2.127 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLE: U
TEMP RATING: -20.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
HARDNESS RATING: 88.0 SHORE DUROMETER A NOMINAL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
PERIPHERAL DIAMETER2.498 INCHES MINIMUM AND 2.502 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT0.312 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN
CENTER HOLE DIAMETER2.123 INCHES MINIMUM AND 2.127 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLEU
TEMP RATING-20.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
HARDNESS RATING88.0 SHORE DUROMETER A NOMINAL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
WA5039Interchangeable
interchangeable cross-reference
interchangeable
174DInterchangeable
interchangeable cross-reference
interchangeable
00323-0001Interchangeable
interchangeable cross-reference
interchangeable
12618149-22Interchangeable
interchangeable cross-reference
interchangeable
93234Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 514902-18?
514902-18 is a PACKING,PREFORMED.
What parts can replace 514902-18?
There are 5 known substitutes for 514902-18: WA5039, 174D, 00323-0001 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 514902-18?
514902-18 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-146-2691. This indicates validated use in U.S. government and defense supply chains.
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