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16704650 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

16704650: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER FLUOROSILICONE CLASS FQ, temp_rating: 400.0 FAHRENHEIT AND -20.0 FAHRENHEIT DEGF, hardness_rating: 70.0 SHORE DUROMETER A NOMINAL, center_hole_diameter: 2.100 INCHES NOMINAL IN, cross-sectional_height: 0.210 INCHES NOMINAL IN, end_item_identification: ENGINE DIESEL; P/N 38TD8-1/8AR3 ONBOARD WHEC 378 FT COAST GUARD VESSELS FT. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-419-9489, 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
16704650
NSN: 5331-01-419-9489
FSC: 5331 — O-ring
CAGE: 7PZX0 — FAIRBANKS MORSE, LLC (USA)
SPECIFICATIONS
materialRUBBER FLUOROSILICONE CLASS FQ
temp_rating400.0 FAHRENHEIT AND -20.0 FAHRENHEIT DEGF
hardness_rating70.0 SHORE DUROMETER A NOMINAL
center_hole_diameter2.100 INCHES NOMINAL IN
cross-sectional_height0.210 INCHES NOMINAL IN
end_item_identificationENGINE DIESEL; P/N 38TD8-1/8AR3 ONBOARD WHEC 378 FT COAST GUARD VESSELS FT
NSN5331-01-419-9489
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 16704650 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
•
TEMP RATING: 400.0 FAHRENHEIT AND -20.0 FAHRENHEIT DEGF
•
CROSS-SECTIONAL HEIGHT: 0.210 INCHES NOMINAL IN
•
HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL
•
CENTER HOLE DIAMETER: 2.100 INCHES NOMINAL IN
•
MATERIAL: RUBBER FLUOROSILICONE CLASS FQ
TECHNICAL CHARACTERISTICS
TEMP RATING400.0 FAHRENHEIT AND -20.0 FAHRENHEIT DEGF
CROSS-SECTIONAL HEIGHT0.210 INCHES NOMINAL IN
HARDNESS RATING70.0 SHORE DUROMETER A NOMINAL
CENTER HOLE DIAMETER2.100 INCHES NOMINAL IN
END ITEM IDENTIFICATIONENGINE DIESEL; P/N 38TD8-1/8AR3 ONBOARD WHEC 378 FT COAST GUARD VESSELS FT
MATERIALRUBBER FLUOROSILICONE CLASS FQ
OTHER ITEMS IN FSC 5331 — O-ring
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5331-00-001-1971 5331-00-001-1979 5331-00-001-3904 5331-00-001-3905 5331-00-001-3906 5331-00-001-3908 5331-00-001-3923 5331-00-001-3924
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 16704650?
16704650 is a O-RING.
What is the NSN for 16704650?
16704650 is cataloged in the U.S. Government catalog under NSN 5331-01-419-9489. 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.