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PartsTable / COMPONENT / 2890865-1
2890865-1 ✓ 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 BUMPER is a the manufacturer industrial component. Key specifications include color: NATURAL, material: RUBBER SILICONE, overall_height: 0.293 INCHES MINIMUM AND 0.393 INCHES MAXIMUM IN, groove_diameter: 0.230 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN, style_designator: DOUBLE FLANGE, top_flange_width: 0.136 INCHES MINIMUM AND 0.176 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 5340-01-017-1453, 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
2890865-1
NSN: 5340-01-017-1453
FSC: 5340
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
colorNATURAL
materialRUBBER SILICONE
overall_height0.293 INCHES MINIMUM AND 0.393 INCHES MAXIMUM IN
groove_diameter0.230 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
style_designatorDOUBLE FLANGE
top_flange_width0.136 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
bottom_flange_width0.105 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN
bottom_flange_diameter0.292 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN
material_hardness_rating50.0 SHORE DUROMETER A NOMINAL
outside/top_flange_diameter0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
material_document_and_classificationZZ-R-765, CLASS 2B, GRADE 50 FED SPEC SINGLE MATERIAL RESPONSE
NSN5340-01-017-1453
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2890865-1 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: ZZ-R-765, CLASS 2B, GRADE 50 FED SPEC SINGLE MATERIAL RESPONSE
•
MATERIAL HARDNESS RATING: 50.0 SHORE DUROMETER A NOMINAL
•
BOTTOM FLANGE WIDTH: 0.105 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN
•
BOTTOM FLANGE DIAMETER: 0.292 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN
•
TOP FLANGE WIDTH: 0.136 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
•
MATERIAL: RUBBER SILICONE
•
OUTSIDE/TOP FLANGE DIAMETER: 0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONZZ-R-765, CLASS 2B, GRADE 50 FED SPEC SINGLE MATERIAL RESPONSE
MATERIAL HARDNESS RATING50.0 SHORE DUROMETER A NOMINAL
BOTTOM FLANGE WIDTH0.105 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN
OVERALL HEIGHT0.293 INCHES MINIMUM AND 0.393 INCHES MAXIMUM IN
BOTTOM FLANGE DIAMETER0.292 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN
TOP FLANGE WIDTH0.136 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
MATERIALRUBBER SILICONE
OUTSIDE/TOP FLANGE DIAMETER0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
GROOVE DIAMETER0.230 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
COLORNATURAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
18318Interchangeable
interchangeable cross-reference
interchangeable
A-A-2578Interchangeable
interchangeable cross-reference
interchangeable
RR-P-586Interchangeable
interchangeable cross-reference
interchangeable
3987Interchangeable
interchangeable cross-reference
interchangeable
8595422-250Interchangeable
interchangeable cross-reference
interchangeable
9100-0153Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2890865-1?
2890865-1 is a BUMPER.
What parts can replace 2890865-1?
There are 7 known substitutes for 2890865-1: 18318, A-A-2578, RR-P-586 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2890865-1?
2890865-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-017-1453. 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