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Technical Data Sheet
PartsTable / O-RING / 2171-4
2171-4 ✓ 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 SHAFT,SHOULDERED is a the manufacturer industrial component. Key specifications include end_item_identification: 016691345, part_name_assigned_by_controlling_agency: BUMPER. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-286-9835, 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
2171-4
NSN: 5331-00-286-9835
FSC: 5331 — O-RING
CAGE: 88277 — THE BOEING COMPANY (USA)
SPECIFICATIONS
end_item_identification016691345
part_name_assigned_by_controlling_agencyBUMPER
NSN5331-00-286-9835
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2171-4 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: 1.974 INCHES MINIMUM AND 1.994 INCHES MAXIMUM IN
•
CROSS-SECTIONAL HEIGHT: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
•
MATERIAL: RUBBER NATURAL
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE DIAMETER1.974 INCHES MINIMUM AND 1.994 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
MATERIALRUBBER NATURAL
SPECIAL FEATURESAGE CONTROL PER ANA BULLETIN 438
PART NAME ASSIGNED BY CONTROLLING AGENCYPACKING - "O"RING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
21714Interchangeable
interchangeable cross-reference
interchangeable
Y15-2DInterchangeable
interchangeable cross-reference
interchangeable
99114986Interchangeable
interchangeable cross-reference
interchangeable
14986Interchangeable
interchangeable cross-reference
interchangeable
2BE857Interchangeable
interchangeable cross-reference
interchangeable
S8171-4Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2171-4?
2171-4 is a SHAFT,SHOULDERED.
What parts can replace 2171-4?
There are 6 known substitutes for 2171-4: 21714, Y15-2D, 99114986 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2171-4?
2171-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-286-9835. 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