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Technical Data Sheet
PartsTable / COMPONENT / 21550-2
21550-2 ✓ 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

Stylish used look, functionality and ideal all-round protection for the Apple iPhone 14: the "Guard Pro" combines everything in a mobile phone case. Your business cards are always handy in the practical insert compartment. For business or personal use: ideal for everyday life.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-205-5250, 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
21550-2
NSN: 5340-00-205-5250
FSC: 5340
CAGE: 21900 — FEDERAL DIV OF VICTOREEN INSTRUMENT CO INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY
head_height0.078 INCHES NOMINAL IN
overall_height0.266 INCHES NOMINAL IN
prong_quantity8
style_designatorSTANDARD
surface_treatmentNICKEL
head_outside_diameter0.656 INCHES NOMINAL IN
prong_outside_diameter0.531 INCHES NOMINAL IN
hole_accommodation_diameter0.500 INCHES NOMINAL IN
material_accommodated_thickness0.037 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN
NSN5340-00-205-5250
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 21550-2 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
•
PRONG QUANTITY: 8
•
MATERIAL ACCOMMODATED THICKNESS: 0.037 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN
•
PRONG OUTSIDE DIAMETER: 0.531 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.078 INCHES NOMINAL IN
•
HOLE ACCOMMODATION DIAMETER: 0.500 INCHES NOMINAL IN
•
SURFACE TREATMENT: NICKEL
•
HEAD OUTSIDE DIAMETER: 0.656 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
PRONG QUANTITY8
MATERIAL ACCOMMODATED THICKNESS0.037 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN
OVERALL HEIGHT0.266 INCHES NOMINAL IN
PRONG OUTSIDE DIAMETER0.531 INCHES NOMINAL IN
HEAD HEIGHT0.078 INCHES NOMINAL IN
HOLE ACCOMMODATION DIAMETER0.500 INCHES NOMINAL IN
SURFACE TREATMENTNICKEL
HEAD OUTSIDE DIAMETER0.656 INCHES NOMINAL IN
STYLE DESIGNATORSTANDARD
MATERIALCOPPER ALLOY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
876721-00Upgraded Successor
successor cross-reference
successor
BS48152Upgraded Successor
successor cross-reference
successor
0N009457Upgraded Successor
successor cross-reference
successor
C-21550-2Upgraded Successor
successor cross-reference
successor
21550-2Upgraded Successor
successor cross-reference
successor
FFS85TYPE2STYLE10PInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21550-2?
21550-2 is a FILTER,FLUID manufactured by Hama.
What parts can replace 21550-2?
There are 25 known substitutes for 21550-2: 876721-00, BS48152, 0N009457 and 22 more. Substitute compatibility should be verified for your specific system.
Is 21550-2 still available?
21550-2 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026