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Technical Data Sheet
PartsTable / O-RING / 21555
21555 ✓ Verified by PartsTable
Hama · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

Paper backgrounds, lightfast, dull, wound on a cardboard core.<br>- 2.75 x 11 m<br>- Colour: Turquoise. Key specifications include end_item_identification: F-22 RAPTOR, part_name_assigned_by_controlling_agency: DOOR,VEHICULAR. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-237-7641, 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
21555
NSN: 5331-00-237-7641
FSC: 5331 — O-RING
CAGE: 24478 — MONNIER INC (USA)
SPECIFICATIONS
end_item_identificationF-22 RAPTOR
part_name_assigned_by_controlling_agencyDOOR,VEHICULAR
NSN5331-00-237-7641
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 21555 MFR: Hama ⚠ 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: 2.290 INCHES MINIMUM AND 2.310 INCHES MAXIMUM IN
•
MATERIAL: RUBBER
•
CROSS-SECTIONAL HEIGHT: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE DIAMETER2.290 INCHES MINIMUM AND 2.310 INCHES MAXIMUM IN
MATERIALRUBBER
CROSS-SECTIONAL HEIGHT0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
21204Interchangeable
interchangeable cross-reference
interchangeable
131-21204Interchangeable
interchangeable cross-reference
interchangeable
G9623P56Interchangeable
interchangeable cross-reference
interchangeable
70343-3Interchangeable
interchangeable cross-reference
interchangeable
543405Interchangeable
interchangeable cross-reference
interchangeable
812-35Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21555?
21555 is a BEARING,BALL,ANNULAR manufactured by Hama.
What parts can replace 21555?
There are 17 known substitutes for 21555: 21204, 131-21204, G9623P56 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21555?
21555 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-237-7641. 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