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Technical Data Sheet
PartsTable / O-RING / 1647807 PIECE 4
1647807 PIECE 4 ✓ 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: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR, outside_diameter: 3.006 INCHES NOMINAL IN, center_hole_diameter: 2.778 INCHES MINIMUM AND 2.822 INCHES MAXIMUM IN, cross-sectional_height: 0.094 INCHES NOMINAL 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 5331-00-618-4527, 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
1647807 PIECE 4
NSN: 5331-00-618-4527
FSC: 5331 — O-RING
CAGE: 97942 — NORTHROP GRUMMAN SYSTEMS CORPORATION DBA NORTHROP GRUMMAN SYSTEMS CORP (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
outside_diameter3.006 INCHES NOMINAL IN
center_hole_diameter2.778 INCHES MINIMUM AND 2.822 INCHES MAXIMUM IN
cross-sectional_height0.094 INCHES NOMINAL IN
NSN5331-00-618-4527
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1647807 PIECE 4 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
•
CENTER HOLE DIAMETER: 2.778 INCHES MINIMUM AND 2.822 INCHES MAXIMUM IN
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
•
CROSS-SECTIONAL HEIGHT: 0.094 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 3.006 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE DIAMETER2.778 INCHES MINIMUM AND 2.822 INCHES MAXIMUM IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
CROSS-SECTIONAL HEIGHT0.094 INCHES NOMINAL IN
OUTSIDE DIAMETER3.006 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
2-149-N674-70Interchangeable
interchangeable cross-reference
interchangeable
B 2575.146.590Interchangeable
interchangeable cross-reference
interchangeable
D3113452AInterchangeable
interchangeable cross-reference
interchangeable
AMS-R-83285Interchangeable
interchangeable cross-reference
interchangeable
AMS-R-83285GR80/AS568-149Interchangeable
interchangeable cross-reference
interchangeable
SP100-137Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1647807 PIECE 4?
1647807 PIECE 4 is a O-RING.
What parts can replace 1647807 PIECE 4?
There are 8 known substitutes for 1647807 PIECE 4: 2-149-N674-70, B 2575.146.590, D3113452A and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1647807 PIECE 4?
1647807 PIECE 4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-618-4527. 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